The cobalt (Co) doped ZnO (Zn1-xCoxO1-δ) and cobalt (Co)/manganese (Mn) co-doped ZnO (Zn1-x-yMnxCoyO1-δ) nanocrystalline materials were prepared using soft chemical synthesis route. Their fundamental and photo-physical properties were studied by XRD, FTIR, EDAX, SEM, TEM, BET and UV techniques. The photocatalytic studies of the samples were carried out using Orange G (OG) dye as a model contaminant where 25 mol% Co/Mn co-doped ZnO (CM-25) showed a higher degradation percentage (80%) than that of all Co doped ZnO samples. The factors influencing photocatalytic degradation of dye such as, amount of catalyst, dye concentration and pH were also studied.
{"title":"Photocatalytic Characteristics of Cobalt Doped ZnO and Cobalt/Manganese Co-Doped ZnO Nanocrystalline Materials Synthesized by Soft Chemical Route: Effective Elimination of Orange G Dye under UV Light","authors":"Elizabeth Kuruvilla, Arputharaj Samson Nesaraj, Vinaya Jose, Vismaya Jose, Manasai Arunkumar","doi":"10.1080/10584587.2023.2239095","DOIUrl":"https://doi.org/10.1080/10584587.2023.2239095","url":null,"abstract":"The cobalt (Co) doped ZnO (Zn1-xCoxO1-δ) and cobalt (Co)/manganese (Mn) co-doped ZnO (Zn1-x-yMnxCoyO1-δ) nanocrystalline materials were prepared using soft chemical synthesis route. Their fundamental and photo-physical properties were studied by XRD, FTIR, EDAX, SEM, TEM, BET and UV techniques. The photocatalytic studies of the samples were carried out using Orange G (OG) dye as a model contaminant where 25 mol% Co/Mn co-doped ZnO (CM-25) showed a higher degradation percentage (80%) than that of all Co doped ZnO samples. The factors influencing photocatalytic degradation of dye such as, amount of catalyst, dye concentration and pH were also studied.","PeriodicalId":13686,"journal":{"name":"Integrated Ferroelectrics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134968648","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-02DOI: 10.1080/10584587.2023.2227042
Avinash Tripathi, Abhishek Nigam, S. J. Pawar
AbstractThe x-ray diffraction analysis manifested the single phases of Fe2O3, SmFeO3, and v SmFeO3 synthesized via sol-gel route. The Fe2O3, SmFeO3, and v SmFeO3 were hexagonal, orthorhombic, and cubic, respectively. The Debye-Scherer formula was used to calculate the average crystallite size of Fe2O3 (85.54 nm), SmFeO3 (67.65 nm), and v SmFeO3 (49.58 nm). The FESEM reveals near-spherical morphology with average particle sizes of 173, 114, and 161 nm, respectively. VSM analysis revealed the enhanced magnetic behavior of SmFeO3 and v SmFeO3 compared to Fe2O3. Antimicrobial activity against both E. coli and S. aureus bacteria justifies the biomedical application.Keywords: Antimicrobialferritesmagnetic nanoparticlessamariumrare earth material Disclosure StatementNo potential conflict of interest was reported by the author(s).AcknowledgmentsThe authors are grateful to the Centre for Interdisciplinary Research (CIR), MNNIT Allahabad, Prayagraj, and IIT Kanpur, for the characterization of the materials.Additional informationFundingThis work was supported by the Ministry of Education, Govt. of India, by giving an M. Tech. Fellowship.
{"title":"Rare Earth Metal Samarium Doped Ferrite and Its Structural, Morphological, Magnetic, and Optical Studies for Biomedical Applications","authors":"Avinash Tripathi, Abhishek Nigam, S. J. Pawar","doi":"10.1080/10584587.2023.2227042","DOIUrl":"https://doi.org/10.1080/10584587.2023.2227042","url":null,"abstract":"AbstractThe x-ray diffraction analysis manifested the single phases of Fe2O3, SmFeO3, and v SmFeO3 synthesized via sol-gel route. The Fe2O3, SmFeO3, and v SmFeO3 were hexagonal, orthorhombic, and cubic, respectively. The Debye-Scherer formula was used to calculate the average crystallite size of Fe2O3 (85.54 nm), SmFeO3 (67.65 nm), and v SmFeO3 (49.58 nm). The FESEM reveals near-spherical morphology with average particle sizes of 173, 114, and 161 nm, respectively. VSM analysis revealed the enhanced magnetic behavior of SmFeO3 and v SmFeO3 compared to Fe2O3. Antimicrobial activity against both E. coli and S. aureus bacteria justifies the biomedical application.Keywords: Antimicrobialferritesmagnetic nanoparticlessamariumrare earth material Disclosure StatementNo potential conflict of interest was reported by the author(s).AcknowledgmentsThe authors are grateful to the Centre for Interdisciplinary Research (CIR), MNNIT Allahabad, Prayagraj, and IIT Kanpur, for the characterization of the materials.Additional informationFundingThis work was supported by the Ministry of Education, Govt. of India, by giving an M. Tech. Fellowship.","PeriodicalId":13686,"journal":{"name":"Integrated Ferroelectrics","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134968823","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-02DOI: 10.1080/10584587.2023.2227055
Norah Alwadai, V. P. Singh, Maryam Al Huwayz, Z.A. Alrowaili, Imen Kebaili, Imed Boukhris, M. S. Al-Buriahi
Abstract BaTiO3/cement pyroelectric composite was fabricated and it was also explored for pyrocatalysis dye degradation at room temperature. The BaTiO3/cement was electrically poled and piezoelectric coefficient was found to be ±20 pC/N. Poled BaTiO3/cement composite can effectively decompose Rhodanmine B dye with a degradation efficiency of 60% by harvesting 6–40 °C cold–hot alternation energy. These results along with the high stability displayed by the composites indicate a new approach for development of functional cements for environmental remediation.
{"title":"Pyro-Catalytic Activates of Cement-Based BaTiO <sub>3</sub> Composites","authors":"Norah Alwadai, V. P. Singh, Maryam Al Huwayz, Z.A. Alrowaili, Imen Kebaili, Imed Boukhris, M. S. Al-Buriahi","doi":"10.1080/10584587.2023.2227055","DOIUrl":"https://doi.org/10.1080/10584587.2023.2227055","url":null,"abstract":"Abstract BaTiO3/cement pyroelectric composite was fabricated and it was also explored for pyrocatalysis dye degradation at room temperature. The BaTiO3/cement was electrically poled and piezoelectric coefficient was found to be ±20 pC/N. Poled BaTiO3/cement composite can effectively decompose Rhodanmine B dye with a degradation efficiency of 60% by harvesting 6–40 °C cold–hot alternation energy. These results along with the high stability displayed by the composites indicate a new approach for development of functional cements for environmental remediation.","PeriodicalId":13686,"journal":{"name":"Integrated Ferroelectrics","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134968506","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-02DOI: 10.1080/10584587.2023.2227052
Hoai Thuong Nguyen, Sergey V. Baryshnikov, A. Yu. Milinsky, Elena V. Stukova
Abstract The present work reports the experimental results of studying linear and nonlinear dielectric properties of a ferroelectric nanocomposite from RbNO3 embedded in pores of an Al2O3 matrix. The dielectric relaxation times were determined above and below the phase transition temperature of pure RbNO3 (436 K). It was shown that for RbNO3 incorporated into nanosized pores of the Al2O3 matrix, a decrease in the phase transition temperature and a change in relaxation times were observed.
{"title":"Dielectric Properties of a Nanocomposite from RbNO<sub>3</sub> Incorporated into Pores of Al<sub>2</sub>O<sub>3</sub> Matrix","authors":"Hoai Thuong Nguyen, Sergey V. Baryshnikov, A. Yu. Milinsky, Elena V. Stukova","doi":"10.1080/10584587.2023.2227052","DOIUrl":"https://doi.org/10.1080/10584587.2023.2227052","url":null,"abstract":"Abstract The present work reports the experimental results of studying linear and nonlinear dielectric properties of a ferroelectric nanocomposite from RbNO3 embedded in pores of an Al2O3 matrix. The dielectric relaxation times were determined above and below the phase transition temperature of pure RbNO3 (436 K). It was shown that for RbNO3 incorporated into nanosized pores of the Al2O3 matrix, a decrease in the phase transition temperature and a change in relaxation times were observed.","PeriodicalId":13686,"journal":{"name":"Integrated Ferroelectrics","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134968508","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-02DOI: 10.1080/10584587.2023.2227041
Z. E. Hakhverdiyeva
AbstractPolycrystals of perovskite manganites Ca0.5Nd0.5MnO3 and Ca0.5Pr0.5MnO3 have been synthesized, their surface structure and elemental analysis have been studied using a Scanning Electron Microscope. X-ray phase analysis revealed that these compounds have an orthorhombic crystal structure with space group Pbnm. These compounds were synthesized as polycrystals in the solid phase. It was determined that Ca − 12.25%, Mn − 31.55%, Nd − 35.58%, O − 20.62% in the compound Ca0.5Nd0.5MnO3. In Ca0.5Pr0.5MnO3 compound Ca − 12.11%, Mn − 30.62%, Pr − 36.81%, O − 20.46%. From the surface structure obtained on a micron scale, it was determined that the size of the crystallites is in the range of 20-30 microns.Keywords: PerovskitemanganitSEM analysissurface structure Disclosure StatementNo potential conflict of interest was reported by the author(s).
{"title":"Scanning Electron Microscopy Study of Ca <sub>0.5</sub> Nd <sub>0.5</sub> MnO <sub>3</sub> and Ca <sub>0.5</sub> Pr <sub>0.5</sub> MnO <sub>3</sub> Crystals","authors":"Z. E. Hakhverdiyeva","doi":"10.1080/10584587.2023.2227041","DOIUrl":"https://doi.org/10.1080/10584587.2023.2227041","url":null,"abstract":"AbstractPolycrystals of perovskite manganites Ca0.5Nd0.5MnO3 and Ca0.5Pr0.5MnO3 have been synthesized, their surface structure and elemental analysis have been studied using a Scanning Electron Microscope. X-ray phase analysis revealed that these compounds have an orthorhombic crystal structure with space group Pbnm. These compounds were synthesized as polycrystals in the solid phase. It was determined that Ca − 12.25%, Mn − 31.55%, Nd − 35.58%, O − 20.62% in the compound Ca0.5Nd0.5MnO3. In Ca0.5Pr0.5MnO3 compound Ca − 12.11%, Mn − 30.62%, Pr − 36.81%, O − 20.46%. From the surface structure obtained on a micron scale, it was determined that the size of the crystallites is in the range of 20-30 microns.Keywords: PerovskitemanganitSEM analysissurface structure Disclosure StatementNo potential conflict of interest was reported by the author(s).","PeriodicalId":13686,"journal":{"name":"Integrated Ferroelectrics","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134968510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-02DOI: 10.1080/10584587.2023.2227049
N. Discharoen, S. Sanorpim, N. Nuntawong, V. Yordsri, K. Onabe
AbstractMicrostructures of cubic AlN on MgO (001) with using two-step growth of cubic GaN buffer layer grown by plasma assist molecular beam epitaxy (PAMBE) technique have been investigated by bright- and dark field cross section transmission electron microscopy (TEM) along [100] zone axis. The Pyramid shape contrast which has been proposed the characteristic of stacking faults defect was observed in cubic AlN film. Pyramid facet contrast correspond with (002) plane and (111) plane with ∼45° projection along [100] direction. The 3D graphic model can explain the Pyramid contrast structure defect as the same Pyramid contrast structure observed in [110] direction with the angle between (002) and (111) of cubic structure found ∼54.7° by the literature.Keywords: Cubic phaseAlNbuffer layerMBEstacking faultTEM AcknowledgementsThe authors would like to thank the 90th Anniversary of Chulalongkorn University Fund (Ratchadaphiseksomphot Endowment Fund), Conference Grant for Ph.D. Student Chulalongkorn University and Ratchadaphiseksomphot Endowment Fund of Chulalongkorn University (RES5605302227AM) for their financial support.Disclosure StatementNo potential conflict of interest was reported by the authors.
{"title":"TEM Investigation of Stacking Faults Defect Taken Along [100] Zone Axis of Cubic AlN on MgO (001) Substrate with Using 2-Step Growth Cubic GaN Buffer Layer by PAMBE","authors":"N. Discharoen, S. Sanorpim, N. Nuntawong, V. Yordsri, K. Onabe","doi":"10.1080/10584587.2023.2227049","DOIUrl":"https://doi.org/10.1080/10584587.2023.2227049","url":null,"abstract":"AbstractMicrostructures of cubic AlN on MgO (001) with using two-step growth of cubic GaN buffer layer grown by plasma assist molecular beam epitaxy (PAMBE) technique have been investigated by bright- and dark field cross section transmission electron microscopy (TEM) along [100] zone axis. The Pyramid shape contrast which has been proposed the characteristic of stacking faults defect was observed in cubic AlN film. Pyramid facet contrast correspond with (002) plane and (111) plane with ∼45° projection along [100] direction. The 3D graphic model can explain the Pyramid contrast structure defect as the same Pyramid contrast structure observed in [110] direction with the angle between (002) and (111) of cubic structure found ∼54.7° by the literature.Keywords: Cubic phaseAlNbuffer layerMBEstacking faultTEM AcknowledgementsThe authors would like to thank the 90th Anniversary of Chulalongkorn University Fund (Ratchadaphiseksomphot Endowment Fund), Conference Grant for Ph.D. Student Chulalongkorn University and Ratchadaphiseksomphot Endowment Fund of Chulalongkorn University (RES5605302227AM) for their financial support.Disclosure StatementNo potential conflict of interest was reported by the authors.","PeriodicalId":13686,"journal":{"name":"Integrated Ferroelectrics","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134968646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract In Japan, a huge portion of the population is aged people, who are prone to various diseases and injuries on a regular basis. Injuries due to falls are one of the biggest risk factors. Consequently, the demand for fall detection sensors, especially the ones that used a triboelectric nanogenerator (TENG) has recently increased. In a previous study, our group reported the development of a wearable sensor for fall detection with privacy protection using the principle of TENG. Conventional TENGs use polymer films as friction material. However, it is difficult for film-based TENGs to harvest output from various angles of contact separation, as the films have two-dimension structures. Consequently, our previous study focused on developing brush-based TENG (B-TENG), and B-TENG harvested output from various angles of contact-separation. However, the B-TENGs we developed were not sensitive enough to detect signals of lower contact force, and thereby could not be used in fall detection sensors. In this study, we focused on improving the performance of B-TENG by investigating the properties of the brushes and the effect of various external parameters on the harvested output voltage of B-TENGs. Consequently, we have constructed an optimized B-TENG, which harvests almost 18 times higher output voltage than the previous one developed by our group. Thus, this optimized B-TENG has the potential for practical use in fall detection sensors.
{"title":"Output Behavior of Fall Detection Sensor Using Brush-Based Triboelectric Nanogenerator Depending on Fiber Characteristics","authors":"Tomohiro Komatsu, Rino Uejima, Shota Shima, Yuji Uchiyama, Eiichi Kobayashi, Eiichiro Takamura, Hiroaki Sakamoto","doi":"10.1080/10584587.2023.2227043","DOIUrl":"https://doi.org/10.1080/10584587.2023.2227043","url":null,"abstract":"Abstract In Japan, a huge portion of the population is aged people, who are prone to various diseases and injuries on a regular basis. Injuries due to falls are one of the biggest risk factors. Consequently, the demand for fall detection sensors, especially the ones that used a triboelectric nanogenerator (TENG) has recently increased. In a previous study, our group reported the development of a wearable sensor for fall detection with privacy protection using the principle of TENG. Conventional TENGs use polymer films as friction material. However, it is difficult for film-based TENGs to harvest output from various angles of contact separation, as the films have two-dimension structures. Consequently, our previous study focused on developing brush-based TENG (B-TENG), and B-TENG harvested output from various angles of contact-separation. However, the B-TENGs we developed were not sensitive enough to detect signals of lower contact force, and thereby could not be used in fall detection sensors. In this study, we focused on improving the performance of B-TENG by investigating the properties of the brushes and the effect of various external parameters on the harvested output voltage of B-TENGs. Consequently, we have constructed an optimized B-TENG, which harvests almost 18 times higher output voltage than the previous one developed by our group. Thus, this optimized B-TENG has the potential for practical use in fall detection sensors.","PeriodicalId":13686,"journal":{"name":"Integrated Ferroelectrics","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134968649","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-02DOI: 10.1080/10584587.2023.2227057
Jayanta Parui, Mani R, Jain Jose, Shama Parwin, E. Varadarajan, V. Natarajan
130,000 g/mol molecular weight of polyvinylpyrrolidone (PVP) was purposed to prepare PZT sol desiring the thick film (≥1.0 µm) deposition on Pt(111)/TiO2/SiO2/Si. Centrifugal force and the spilling of sol during spin coating were found to control the cracks and surface coverage of the films. A rotation-dependent typical pattern formation at the central part of the substrate was observed and better coverage was observed on gel drying 60 °C than 125 °C. Though the remnant polarization (2Pr) of 21.4 µC/cm2 was recorded at 100 Hz for 2.1 µm, it is 41.8 µC/cm2 for 1.06 µm thick films.
{"title":"Towards Optimizing Surface Coverage for PVP-Assisted PZT Ferroelectric Thick Film","authors":"Jayanta Parui, Mani R, Jain Jose, Shama Parwin, E. Varadarajan, V. Natarajan","doi":"10.1080/10584587.2023.2227057","DOIUrl":"https://doi.org/10.1080/10584587.2023.2227057","url":null,"abstract":"130,000 g/mol molecular weight of polyvinylpyrrolidone (PVP) was purposed to prepare PZT sol desiring the thick film (≥1.0 µm) deposition on Pt(111)/TiO2/SiO2/Si. Centrifugal force and the spilling of sol during spin coating were found to control the cracks and surface coverage of the films. A rotation-dependent typical pattern formation at the central part of the substrate was observed and better coverage was observed on gel drying 60 °C than 125 °C. Though the remnant polarization (2Pr) of 21.4 µC/cm2 was recorded at 100 Hz for 2.1 µm, it is 41.8 µC/cm2 for 1.06 µm thick films.","PeriodicalId":13686,"journal":{"name":"Integrated Ferroelectrics","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134968824","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-02DOI: 10.1080/10584587.2023.2192679
Min Wang, Zizheng Wang, Jun Cui
AbstractThe out-of-band management system defined by IPMI only supports IIC bus for inter-node communication, which has low communication rate and poor flexibility for multi-node layout, and it is not suitable for cluster management applications with large data volume of multiple nodes. This article adopts Ethernet instead of IIC to realize the structure layout of multi-node distributed cluster management system. The operation and maintenance information are trans-mitted by RMCP+, but the original RMCP + is rate limited and less stable in the transmission of large data volume in multi-cluster management system due to the use of AES-CBC encryption algorithm. This article optimizes the RMCP + communication process logic to reduce the redundancy in the system cascade data about transmission encryption and decryption calculation, and proposes the method of using parallel CTR for data block encryption instead of serial CBC data block encryption, which realizes the loose coupling of database decryption in data packets, in-creases the decryption rate of data cipher text at remote clients, educes the error transmission caused by tight coupling of data blocks, and improves the communication efficiency. The experimental environment of QEMU-based multi-node management system is built to verify that the communication method proposed in this article is suitable for the operation and maintenance management of distributed multi-node complex ATCA.Keywords: ATCA equipmentIPMIout-of-band management systemAES algorithm Disclosure StatementNo potential conflict of interest was reported by the author(s).
{"title":"ATCA Multi-Node Management System Protocol Optimization","authors":"Min Wang, Zizheng Wang, Jun Cui","doi":"10.1080/10584587.2023.2192679","DOIUrl":"https://doi.org/10.1080/10584587.2023.2192679","url":null,"abstract":"AbstractThe out-of-band management system defined by IPMI only supports IIC bus for inter-node communication, which has low communication rate and poor flexibility for multi-node layout, and it is not suitable for cluster management applications with large data volume of multiple nodes. This article adopts Ethernet instead of IIC to realize the structure layout of multi-node distributed cluster management system. The operation and maintenance information are trans-mitted by RMCP+, but the original RMCP + is rate limited and less stable in the transmission of large data volume in multi-cluster management system due to the use of AES-CBC encryption algorithm. This article optimizes the RMCP + communication process logic to reduce the redundancy in the system cascade data about transmission encryption and decryption calculation, and proposes the method of using parallel CTR for data block encryption instead of serial CBC data block encryption, which realizes the loose coupling of database decryption in data packets, in-creases the decryption rate of data cipher text at remote clients, educes the error transmission caused by tight coupling of data blocks, and improves the communication efficiency. The experimental environment of QEMU-based multi-node management system is built to verify that the communication method proposed in this article is suitable for the operation and maintenance management of distributed multi-node complex ATCA.Keywords: ATCA equipmentIPMIout-of-band management systemAES algorithm Disclosure StatementNo potential conflict of interest was reported by the author(s).","PeriodicalId":13686,"journal":{"name":"Integrated Ferroelectrics","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134968509","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
AbstractThis paper reports the structural, dielectric, and electrical properties of Zr (10%) substituted bismuth titanate with the chemical formula Bi4Ti2.9Zr0.1O12. The material possesses a distorted orthorhombic structure and space group of B2cb at room temperature. The Zr-substituted bismuth titanate has a high Curie temperature and good dielectric constant. In any case, the dielectric constant of the Zr doped ceramic is higher than that of pure bismuth titanate. The study of impedance properties revealed the relaxation process, negative temperature coefficient of resistance behavior, grain and grain boundary formation, and the space charge effect in the high-frequency region of the material. The AC conductivity study explained the activation of charge carriers and the associated hopping mechanisms. A smaller activation energy (Ea) is observed at the low temperatures than in the high-temperature range. The ferroelectric property is confirmed through the P ∼ E hysteresis loop of the material at room temperature.Keywords: DielectricferroelectricelectricalAC conductivityactivation energy Disclosure StatementNo potential conflict of interest was reported by the author(s).
{"title":"Structural and Electrical Transport Features of Bi <sub>4</sub> Ti <sub>2.9</sub> Zr <sub>0.1</sub> O <sub>12</sub>","authors":"Krishna Auromun, Premananda Pradhan, Ram Naresh Prasad Choudhary","doi":"10.1080/10584587.2023.2239094","DOIUrl":"https://doi.org/10.1080/10584587.2023.2239094","url":null,"abstract":"AbstractThis paper reports the structural, dielectric, and electrical properties of Zr (10%) substituted bismuth titanate with the chemical formula Bi4Ti2.9Zr0.1O12. The material possesses a distorted orthorhombic structure and space group of B2cb at room temperature. The Zr-substituted bismuth titanate has a high Curie temperature and good dielectric constant. In any case, the dielectric constant of the Zr doped ceramic is higher than that of pure bismuth titanate. The study of impedance properties revealed the relaxation process, negative temperature coefficient of resistance behavior, grain and grain boundary formation, and the space charge effect in the high-frequency region of the material. The AC conductivity study explained the activation of charge carriers and the associated hopping mechanisms. A smaller activation energy (Ea) is observed at the low temperatures than in the high-temperature range. The ferroelectric property is confirmed through the P ∼ E hysteresis loop of the material at room temperature.Keywords: DielectricferroelectricelectricalAC conductivityactivation energy Disclosure StatementNo potential conflict of interest was reported by the author(s).","PeriodicalId":13686,"journal":{"name":"Integrated Ferroelectrics","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134968511","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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