Pub Date : 2022-12-16DOI: 10.1142/s2010135x23500030
S. Saha, Sadhan Chanda, Alo Dutta, T. Sinha
{"title":"Insulator to metal transition in RCoO3 (R = Pr, Nd)","authors":"S. Saha, Sadhan Chanda, Alo Dutta, T. Sinha","doi":"10.1142/s2010135x23500030","DOIUrl":"https://doi.org/10.1142/s2010135x23500030","url":null,"abstract":"","PeriodicalId":14871,"journal":{"name":"Journal of Advanced Dielectrics","volume":null,"pages":null},"PeriodicalIF":3.1,"publicationDate":"2022-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81772724","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-14DOI: 10.1142/s2010135x23500017
Zhaoxi Li, Shenghui Yang, M. Zhou, Chenxue Hou, Dongdong Chen, Chunlong Fei, Di Li, Yi Quan, Yintang Yang
{"title":"Optimization Design of Autofocusing Metasurface for Ultrasound Wave Application","authors":"Zhaoxi Li, Shenghui Yang, M. Zhou, Chenxue Hou, Dongdong Chen, Chunlong Fei, Di Li, Yi Quan, Yintang Yang","doi":"10.1142/s2010135x23500017","DOIUrl":"https://doi.org/10.1142/s2010135x23500017","url":null,"abstract":"","PeriodicalId":14871,"journal":{"name":"Journal of Advanced Dielectrics","volume":null,"pages":null},"PeriodicalIF":3.1,"publicationDate":"2022-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81797649","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-14DOI: 10.1142/s2010135x23500029
Yan Gu, Faqiang Zhang, Wanghua Wu, Zhifu Liu
{"title":"Microstructure Regulation and Failure Mechanism Study of BaTiO3-based Dielectrics for MLCC Application","authors":"Yan Gu, Faqiang Zhang, Wanghua Wu, Zhifu Liu","doi":"10.1142/s2010135x23500029","DOIUrl":"https://doi.org/10.1142/s2010135x23500029","url":null,"abstract":"","PeriodicalId":14871,"journal":{"name":"Journal of Advanced Dielectrics","volume":null,"pages":null},"PeriodicalIF":3.1,"publicationDate":"2022-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91361827","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-11-26DOI: 10.1142/s2010135x22500205
Xinping Hu, Yuhong Zhu, Baojin Chu
In this work, we show that a [Formula: see text]150 pC/N can be obtained in nonpoled poly(vinylidene fluoride trifluoroethylene) (P(VDF-TrFE)) copolymer films with an arch structure. The copolymer films, which are often thought to be homogeneous, are in fact inhomogeneous in microstructure and physical properties after film fabrication. Although a large proportion of the copolymer film is nonpolar, as expected in a nonpoled ferroelectric film, the surface regions of the film are spontaneously polarized. We propose that inhomogeneous stress in the surface regions, which is either from the constraint of the substrate or skin layer effect formed during the film fabrication, generates a flexoelectric response and orients the spontaneous polarization of the ferroelectric film. As a result of the polar surface regions, the nonpoled films exhibit a piezoelectric response. The piezoelectric response is further amplified by the special arch structure of the films, leading to the observed large effective piezoelectric response. This study not only discovers the polar surface effect in ferroelectric polymer films, but also proposes an approach to design polymer materials with a strong piezoelectric response.
{"title":"Large effective piezoelectric response from the spontaneously polarized surface layer in P(VDF-TrFE) arch films","authors":"Xinping Hu, Yuhong Zhu, Baojin Chu","doi":"10.1142/s2010135x22500205","DOIUrl":"https://doi.org/10.1142/s2010135x22500205","url":null,"abstract":"In this work, we show that a [Formula: see text]150 pC/N can be obtained in nonpoled poly(vinylidene fluoride trifluoroethylene) (P(VDF-TrFE)) copolymer films with an arch structure. The copolymer films, which are often thought to be homogeneous, are in fact inhomogeneous in microstructure and physical properties after film fabrication. Although a large proportion of the copolymer film is nonpolar, as expected in a nonpoled ferroelectric film, the surface regions of the film are spontaneously polarized. We propose that inhomogeneous stress in the surface regions, which is either from the constraint of the substrate or skin layer effect formed during the film fabrication, generates a flexoelectric response and orients the spontaneous polarization of the ferroelectric film. As a result of the polar surface regions, the nonpoled films exhibit a piezoelectric response. The piezoelectric response is further amplified by the special arch structure of the films, leading to the observed large effective piezoelectric response. This study not only discovers the polar surface effect in ferroelectric polymer films, but also proposes an approach to design polymer materials with a strong piezoelectric response.","PeriodicalId":14871,"journal":{"name":"Journal of Advanced Dielectrics","volume":null,"pages":null},"PeriodicalIF":3.1,"publicationDate":"2022-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72746373","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-11-24DOI: 10.1142/s2010135x22410041
Xiaofang Zhang, Xiujuan Lin, Rui Guo, C. Yang, Hui Zhao, Mingyu Zhang, Yan Wang, Xin Cheng, Shi-feng Huang
To improve the acoustic radiation performance of the spherical transducer, a prestressed layer is formed in the transducer through fiber winding. The influence of the prestressed layer on the transducer is studied from the effects of the radial prestress ([Formula: see text][Formula: see text]) and acoustic impedance, respectively. First, a theoretical estimation of [Formula: see text][Formula: see text] is established with a thin shell approximation of the prestressed layer. Then, the acoustic impedance is measured to evaluate the efficiency of sound energy transmission within the prestressed layer. Further, the ideal effects of [Formula: see text][Formula: see text] on the sound radiation performances of the transducer are analyzed through finite element analysis (FEA). Finally, four spherical transducers are fabricated and tested to investigate their dependence of actual properties on the prestressed layer. The results show that with the growth of [Formula: see text][Formula: see text], the acoustic impedance of the prestressed layer grows, mitigating the enormous impedance mismatch between the piezoelectric ceramic and water, while increasing attenuation of the acoustic energy, resulting in a peak value of the maximum transmitting voltage response (TVR[Formula: see text]) at 1.18 MPa. The maximum drive voltage increases with [Formula: see text][Formula: see text], leading to a steady growth of the maximum transmitting sound level (SL[Formula: see text]), with a noticeable ascend of 3.9 dB at a 3.44 MPa [Formula: see text][Formula: see text]. This is a strong credibility that the prestressed layer could improve the sound radiation performance of the spherical transducer.
{"title":"Influence of the prestressed layer on spherical transducer in sound radiation performance","authors":"Xiaofang Zhang, Xiujuan Lin, Rui Guo, C. Yang, Hui Zhao, Mingyu Zhang, Yan Wang, Xin Cheng, Shi-feng Huang","doi":"10.1142/s2010135x22410041","DOIUrl":"https://doi.org/10.1142/s2010135x22410041","url":null,"abstract":"To improve the acoustic radiation performance of the spherical transducer, a prestressed layer is formed in the transducer through fiber winding. The influence of the prestressed layer on the transducer is studied from the effects of the radial prestress ([Formula: see text][Formula: see text]) and acoustic impedance, respectively. First, a theoretical estimation of [Formula: see text][Formula: see text] is established with a thin shell approximation of the prestressed layer. Then, the acoustic impedance is measured to evaluate the efficiency of sound energy transmission within the prestressed layer. Further, the ideal effects of [Formula: see text][Formula: see text] on the sound radiation performances of the transducer are analyzed through finite element analysis (FEA). Finally, four spherical transducers are fabricated and tested to investigate their dependence of actual properties on the prestressed layer. The results show that with the growth of [Formula: see text][Formula: see text], the acoustic impedance of the prestressed layer grows, mitigating the enormous impedance mismatch between the piezoelectric ceramic and water, while increasing attenuation of the acoustic energy, resulting in a peak value of the maximum transmitting voltage response (TVR[Formula: see text]) at 1.18 MPa. The maximum drive voltage increases with [Formula: see text][Formula: see text], leading to a steady growth of the maximum transmitting sound level (SL[Formula: see text]), with a noticeable ascend of 3.9 dB at a 3.44 MPa [Formula: see text][Formula: see text]. This is a strong credibility that the prestressed layer could improve the sound radiation performance of the spherical transducer.","PeriodicalId":14871,"journal":{"name":"Journal of Advanced Dielectrics","volume":null,"pages":null},"PeriodicalIF":3.1,"publicationDate":"2022-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79708914","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-11-17DOI: 10.1142/s2010135x22420048
C. Liang, Chang-hao Wang, W. Cao, Hanyu Zhao, Feng Li, Chunchang Wang
In this work, (1 [Formula: see text])(0.92NaNbO3–0.08BaTiO3)–[Formula: see text]Ca[Formula: see text]La[Formula: see text]TiO3 (NNBT – [Formula: see text]CLT) ceramics were successfully designed and prepared by the solid-state reaction method. Investigations on the structure, dielectric, and energy storage properties were performed. The NNBT – 0.25CLT ceramic with orthorhombic phase at room temperature was found to exhibit extremely small grain size and compacted microstructure. A large [Formula: see text] of 3.1 J/cm3 and a high [Formula: see text] of 91.5% under the electric field of 360 kV/cm were achieved simultaneously in the sample. In addition, the energy storage performance of the sample exhibits thermal stability over the temperature range of 25–140[Formula: see text]C and the frequency range of 5–500 Hz. The charge and discharge tests reveal that the ceramic shows a large current density [Formula: see text] of 965 A/cm2 and power density [Formula: see text] of 154 MW/cm3. This work demonstrates that the NNBT–0.25CLT ceramic is a prospective energy storage material for potential application in the field of pulsed power devices.
{"title":"High energy storage properties in Ca0.7La0.2TiO3-modified NaNbO3-based lead-free antiferroelectric ceramics","authors":"C. Liang, Chang-hao Wang, W. Cao, Hanyu Zhao, Feng Li, Chunchang Wang","doi":"10.1142/s2010135x22420048","DOIUrl":"https://doi.org/10.1142/s2010135x22420048","url":null,"abstract":"In this work, (1 [Formula: see text])(0.92NaNbO3–0.08BaTiO3)–[Formula: see text]Ca[Formula: see text]La[Formula: see text]TiO3 (NNBT – [Formula: see text]CLT) ceramics were successfully designed and prepared by the solid-state reaction method. Investigations on the structure, dielectric, and energy storage properties were performed. The NNBT – 0.25CLT ceramic with orthorhombic phase at room temperature was found to exhibit extremely small grain size and compacted microstructure. A large [Formula: see text] of 3.1 J/cm3 and a high [Formula: see text] of 91.5% under the electric field of 360 kV/cm were achieved simultaneously in the sample. In addition, the energy storage performance of the sample exhibits thermal stability over the temperature range of 25–140[Formula: see text]C and the frequency range of 5–500 Hz. The charge and discharge tests reveal that the ceramic shows a large current density [Formula: see text] of 965 A/cm2 and power density [Formula: see text] of 154 MW/cm3. This work demonstrates that the NNBT–0.25CLT ceramic is a prospective energy storage material for potential application in the field of pulsed power devices.","PeriodicalId":14871,"journal":{"name":"Journal of Advanced Dielectrics","volume":null,"pages":null},"PeriodicalIF":3.1,"publicationDate":"2022-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72582732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-11-04DOI: 10.1142/s2010135x2242005x
X. Nie, Yan He, Qi-Yuan Shi, Yuqian Liang, Lingling Wei, Pengfei Liang, X. Chao, G. Hu, Zupei Yang
{"title":"Ultra-fast charge-discharge and high energy storage performance realized in K0.5Na0.5NbO3-Bi(Mn0.5Ni0.5)O3 ceramics","authors":"X. Nie, Yan He, Qi-Yuan Shi, Yuqian Liang, Lingling Wei, Pengfei Liang, X. Chao, G. Hu, Zupei Yang","doi":"10.1142/s2010135x2242005x","DOIUrl":"https://doi.org/10.1142/s2010135x2242005x","url":null,"abstract":"","PeriodicalId":14871,"journal":{"name":"Journal of Advanced Dielectrics","volume":null,"pages":null},"PeriodicalIF":3.1,"publicationDate":"2022-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87613962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-28DOI: 10.1142/s2010135x22500217
E. Koroleva, A. Molokov, S. Vakhrushev
{"title":"Electric field induced phase transition from the glasslike to paraelectric phase and dielectric spectra hardening in PMN single crystal","authors":"E. Koroleva, A. Molokov, S. Vakhrushev","doi":"10.1142/s2010135x22500217","DOIUrl":"https://doi.org/10.1142/s2010135x22500217","url":null,"abstract":"","PeriodicalId":14871,"journal":{"name":"Journal of Advanced Dielectrics","volume":null,"pages":null},"PeriodicalIF":3.1,"publicationDate":"2022-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79429651","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ferroelectric materials are considered to be the most competitive energy storage materials for applications in pulsed power electronics due to excellent charge–discharge properties. However, the low energy storage density is the primary problem limiting their practical application. In this study, (1[Formula: see text])Na[Formula: see text]Bi[Formula: see text]TiO3–[Formula: see text]Sr[Formula: see text]La[Formula: see text]TiO3[(1[Formula: see text])NBT–[Formula: see text]SLT] ferroelectric ceramics are found to exhibit excellent energy storage performances through a synergistic strategy. As the SLT concentration increases, the relaxation characteristic increases significantly and the breakdown strength increases dramatically from 150 kV/cm to 220 kV/cm. The recoverable energy storage density of the 0.55NBT–0.45SLT ceramic is 2.86 J/cm3 with an energy storage efficiency of 88% under an electric field of 220 kV/cm. Furthermore, the ceramic with [Formula: see text] = 0.45 mol exhibited excellent energy storage stability in the ranges of 20–180[Formula: see text]C (temperature) and 1–125 Hz (frequency). These excellent properties demonstrate the potential of (1[Formula: see text])NBT–[Formula: see text] SLT ceramics when used as dielectric capacitors in pulsed power systems.
{"title":"Optimization of energy storage properties in (1 − x)Na0.5Bi0.5TiO3-xSr0.7La0.2TiO3-relaxed ferroelectric ceramics","authors":"Zi-yue Ma, Jian-qi Zhu, Jianhua Wu, Yanhua Hu, X. Lou, Ningning Sun, Ye Zhao, Yong Li, Xihong Hao","doi":"10.1142/s2010135x22420036","DOIUrl":"https://doi.org/10.1142/s2010135x22420036","url":null,"abstract":"Ferroelectric materials are considered to be the most competitive energy storage materials for applications in pulsed power electronics due to excellent charge–discharge properties. However, the low energy storage density is the primary problem limiting their practical application. In this study, (1[Formula: see text])Na[Formula: see text]Bi[Formula: see text]TiO3–[Formula: see text]Sr[Formula: see text]La[Formula: see text]TiO3[(1[Formula: see text])NBT–[Formula: see text]SLT] ferroelectric ceramics are found to exhibit excellent energy storage performances through a synergistic strategy. As the SLT concentration increases, the relaxation characteristic increases significantly and the breakdown strength increases dramatically from 150 kV/cm to 220 kV/cm. The recoverable energy storage density of the 0.55NBT–0.45SLT ceramic is 2.86 J/cm3 with an energy storage efficiency of 88% under an electric field of 220 kV/cm. Furthermore, the ceramic with [Formula: see text] = 0.45 mol exhibited excellent energy storage stability in the ranges of 20–180[Formula: see text]C (temperature) and 1–125 Hz (frequency). These excellent properties demonstrate the potential of (1[Formula: see text])NBT–[Formula: see text] SLT ceramics when used as dielectric capacitors in pulsed power systems.","PeriodicalId":14871,"journal":{"name":"Journal of Advanced Dielectrics","volume":null,"pages":null},"PeriodicalIF":3.1,"publicationDate":"2022-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78610758","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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