Pub Date : 2023-04-01DOI: 10.12693/aphyspola.143.298
K. Yakinci, Ö. Çiçek
In this work, pure and with 1, 3, 5, 10, and 15 wt% multi-walled carbon nanotube addition Bi 2 Sr 2 CaCu 2 O 8+ s glass–ceramic materials have been investigated in terms of thermal, structural, microstructural, electrical, and magnetic properties. Multi-walled carbon nanotubes with a purity of 96% were used to enhance electrical transport properties. Thermal properties have been examined using differential thermal analysis. According to the differential thermal analysis, the multi-walled carbon nanotube addition reduced the melting temperature and slightly increased the crystallization activation energy of the BiSrCaCuO material. X-ray analyses showed that all samples have tetragonal symmetry and did not change with addition, but a small change in the c -axis is observed. Scanning electron microscope analyses showed no significant morphological change. The effect of the additive on the resistivity measurements was found to be limited, and zero resistance temperature increased up to a level of 5 wt% addition and then decreased drastically for higher addition cases. The hole concentration of the samples was calculated, and it was found that there was a shift towards the over-doped region with the addition. For the transport critical current density measurements, the highest increase of about 30 % was obtained for the sample with 5 wt% multi-walled carbon nanotube addition, but in high addition cases, significant losses were obtained. A similar situation occurred in magnetization versus magnetic field measurements, and the highest magnetization critical current density value obtained ˚was 4 . 1 × 10 6 A/cm 2 at 4.2 K in the 5 wt% multi-wall
{"title":"Role of Multi-Walled Carbon Nanotube Addition in Superconducting Properties of Bi2Sr2CaCu2O8+s Glass-Ceramic Superconductors","authors":"K. Yakinci, Ö. Çiçek","doi":"10.12693/aphyspola.143.298","DOIUrl":"https://doi.org/10.12693/aphyspola.143.298","url":null,"abstract":"In this work, pure and with 1, 3, 5, 10, and 15 wt% multi-walled carbon nanotube addition Bi 2 Sr 2 CaCu 2 O 8+ s glass–ceramic materials have been investigated in terms of thermal, structural, microstructural, electrical, and magnetic properties. Multi-walled carbon nanotubes with a purity of 96% were used to enhance electrical transport properties. Thermal properties have been examined using differential thermal analysis. According to the differential thermal analysis, the multi-walled carbon nanotube addition reduced the melting temperature and slightly increased the crystallization activation energy of the BiSrCaCuO material. X-ray analyses showed that all samples have tetragonal symmetry and did not change with addition, but a small change in the c -axis is observed. Scanning electron microscope analyses showed no significant morphological change. The effect of the additive on the resistivity measurements was found to be limited, and zero resistance temperature increased up to a level of 5 wt% addition and then decreased drastically for higher addition cases. The hole concentration of the samples was calculated, and it was found that there was a shift towards the over-doped region with the addition. For the transport critical current density measurements, the highest increase of about 30 % was obtained for the sample with 5 wt% multi-walled carbon nanotube addition, but in high addition cases, significant losses were obtained. A similar situation occurred in magnetization versus magnetic field measurements, and the highest magnetization critical current density value obtained ˚was 4 . 1 × 10 6 A/cm 2 at 4.2 K in the 5 wt% multi-wall","PeriodicalId":7164,"journal":{"name":"Acta Physica Polonica A","volume":"57 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77120905","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 : 2023-04-01DOI: 10.12693/aphyspola.143.326
Xiangdong Liu
Heterogeneous oscillator networks consist of a dynamical function that describes the state of the oscillator (containing several parameters) and a topology that reflects the connections between the oscillators. Revealing the macroscopic dynamics of systems under different configurations of parameters and topology is a topic worthy of discussion and comes with great challenges. In this study, we discuss the effect of different parameter configurations on the damped free vibration of a classical spring oscillator network. On the regular network, we give the analytical expression satisfied by the free vibration of the system under over-damping and critical damping. Furthermore, we discuss the fastest and slowest exponential rates of decay of the system for different parameter conditions. In conjunction with quadratic eigenvalue theory, we extend the above analysis from regular networks to complex networks. We give a general method for calculating the eigenvalue spectrum of the system for arbitrary parameter configurations. In conjunction with the stability of the system and the rate of decay of the exponential rate, we also give numerical simulation results for the second largest and smallest real parts of the eigenvalues of the system. Finally, through the comparative analysis of the simulation results, we relax the matching relationship between the three parameters (mass, damping, and degree) to the matching between two parameters (mass and damping).
{"title":"Effect of Parameter Configuration on Free Vibration of Networked Harmonic Oscillators with Viscous Damping","authors":"Xiangdong Liu","doi":"10.12693/aphyspola.143.326","DOIUrl":"https://doi.org/10.12693/aphyspola.143.326","url":null,"abstract":"Heterogeneous oscillator networks consist of a dynamical function that describes the state of the oscillator (containing several parameters) and a topology that reflects the connections between the oscillators. Revealing the macroscopic dynamics of systems under different configurations of parameters and topology is a topic worthy of discussion and comes with great challenges. In this study, we discuss the effect of different parameter configurations on the damped free vibration of a classical spring oscillator network. On the regular network, we give the analytical expression satisfied by the free vibration of the system under over-damping and critical damping. Furthermore, we discuss the fastest and slowest exponential rates of decay of the system for different parameter conditions. In conjunction with quadratic eigenvalue theory, we extend the above analysis from regular networks to complex networks. We give a general method for calculating the eigenvalue spectrum of the system for arbitrary parameter configurations. In conjunction with the stability of the system and the rate of decay of the exponential rate, we also give numerical simulation results for the second largest and smallest real parts of the eigenvalues of the system. Finally, through the comparative analysis of the simulation results, we relax the matching relationship between the three parameters (mass, damping, and degree) to the matching between two parameters (mass and damping).","PeriodicalId":7164,"journal":{"name":"Acta Physica Polonica A","volume":"86 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85827959","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 : 2023-04-01DOI: 10.12693/aphyspola.143.284
F. Güngör, E. Güngör, T. Güngör
{"title":"Development of Spark-Discharge System for Deposition of Metal Oxide Nanoparticles Having Uniform Distribution on Small Surface","authors":"F. Güngör, E. Güngör, T. Güngör","doi":"10.12693/aphyspola.143.284","DOIUrl":"https://doi.org/10.12693/aphyspola.143.284","url":null,"abstract":"","PeriodicalId":7164,"journal":{"name":"Acta Physica Polonica A","volume":"7 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81214209","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 : 2023-04-01DOI: 10.12693/aphyspola.143.290
E. Yücel
In this paper, nanostructured semiconductor PbS metal-chalcogenide thin films were fabricated by the chemical bath deposition method in a surface active agent environment. The structural, morphological, and optical properties of PbS thin films were characterized by X-ray diffraction, scanning electron microscopy, scanning probe microscope and ultraviolet-visible spectroscopy analyses. These analyses reveal that surfactant sodium lauryl ether sulphate plays a key role in modifying the surface roughness and optical properties of PbS thin films. The average surface roughness decreased from 87.9 to 42.8 nm after adding sodium lauryl ether sulfate to the chemical bath solutions. With the increasing sodium lauryl ether sulfate content, the optical band gaps of the PbS thin films increased from 2.10 to 2.52 eV. Additionally, the optical transmittance value of the 3% sodium lauryl ether sulfate added sample increased by approximately 37% compared to the pure sample.
{"title":"Use of Anionic Surfactant Sodium Lauryl Ether Sulfate as a Capping Agent in Metal-Chalcogenide PbS Thin Film Production","authors":"E. Yücel","doi":"10.12693/aphyspola.143.290","DOIUrl":"https://doi.org/10.12693/aphyspola.143.290","url":null,"abstract":"In this paper, nanostructured semiconductor PbS metal-chalcogenide thin films were fabricated by the chemical bath deposition method in a surface active agent environment. The structural, morphological, and optical properties of PbS thin films were characterized by X-ray diffraction, scanning electron microscopy, scanning probe microscope and ultraviolet-visible spectroscopy analyses. These analyses reveal that surfactant sodium lauryl ether sulphate plays a key role in modifying the surface roughness and optical properties of PbS thin films. The average surface roughness decreased from 87.9 to 42.8 nm after adding sodium lauryl ether sulfate to the chemical bath solutions. With the increasing sodium lauryl ether sulfate content, the optical band gaps of the PbS thin films increased from 2.10 to 2.52 eV. Additionally, the optical transmittance value of the 3% sodium lauryl ether sulfate added sample increased by approximately 37% compared to the pure sample.","PeriodicalId":7164,"journal":{"name":"Acta Physica Polonica A","volume":"127 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85725024","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 : 2023-04-01DOI: 10.12693/aphyspola.143.336
N. Maazi
In this study, we investigated the pinning effect exerted by second-phase particles on grain growth. To overcome the difficulties, mainly linked to the complex topological events while using the standard vertex technique in the presence of particles, a modified version of grain growth simulation is presented. The simulation is based on input data from electron backscatter diffraction measurements. Two hexagonal lattices discretize the physical space. One grid stores the grain orientation data, i.e., Euler’s angles ( ϕ 1 , ϕ, ϕ 2 ) . Nodes (vertices) are located in the second grid, where particles are randomly distributed. Vertex simulations, by mean triple junctions dynamics only, were performed to highlight the influence of the surface fraction of the particles on the grain size distribution, the limiting mean grain size, and the edges per grain distribution. During the simulation procedure, vertices move in the direction of the effective force, which results from the driving and the pinning forces.
{"title":"Vertex Simulation of Grain Growth in the Presence of Zener Pinning Effect","authors":"N. Maazi","doi":"10.12693/aphyspola.143.336","DOIUrl":"https://doi.org/10.12693/aphyspola.143.336","url":null,"abstract":"In this study, we investigated the pinning effect exerted by second-phase particles on grain growth. To overcome the difficulties, mainly linked to the complex topological events while using the standard vertex technique in the presence of particles, a modified version of grain growth simulation is presented. The simulation is based on input data from electron backscatter diffraction measurements. Two hexagonal lattices discretize the physical space. One grid stores the grain orientation data, i.e., Euler’s angles ( ϕ 1 , ϕ, ϕ 2 ) . Nodes (vertices) are located in the second grid, where particles are randomly distributed. Vertex simulations, by mean triple junctions dynamics only, were performed to highlight the influence of the surface fraction of the particles on the grain size distribution, the limiting mean grain size, and the edges per grain distribution. During the simulation procedure, vertices move in the direction of the effective force, which results from the driving and the pinning forces.","PeriodicalId":7164,"journal":{"name":"Acta Physica Polonica A","volume":"455 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76466781","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 : 2023-04-01DOI: 10.12693/aphyspola.143.309
R. Hariharasuthan, K. Radha, M. Meena, K. Senthilkannan
{"title":"Characterizations of AMPF Micro-Crystals for Photonic, Dielectric, Nano-Influx and Anti-diabetic Relevances","authors":"R. Hariharasuthan, K. Radha, M. Meena, K. Senthilkannan","doi":"10.12693/aphyspola.143.309","DOIUrl":"https://doi.org/10.12693/aphyspola.143.309","url":null,"abstract":"","PeriodicalId":7164,"journal":{"name":"Acta Physica Polonica A","volume":"72 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85116936","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 : 2023-03-01DOI: 10.12693/aphyspola.143.238
V. Sharma, A. Thakur, J. Devi, G. Rana
{"title":"Rayleigh-Taylor Instability of Superposed Dusty Jeffrey Fluids through Porous Medium with Interfacial Surface Tension","authors":"V. Sharma, A. Thakur, J. Devi, G. Rana","doi":"10.12693/aphyspola.143.238","DOIUrl":"https://doi.org/10.12693/aphyspola.143.238","url":null,"abstract":"","PeriodicalId":7164,"journal":{"name":"Acta Physica Polonica A","volume":"10 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79556241","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 : 2023-03-01DOI: 10.12693/aphyspola.143.270
Z. Hua, Taotao Feng, Yuecheng Wu, Wanqiu Yu, Pingli Zhang
{"title":"Influence of Fe and Co Content on Crystallization and Magnetic Property of FeZrB Alloys","authors":"Z. Hua, Taotao Feng, Yuecheng Wu, Wanqiu Yu, Pingli Zhang","doi":"10.12693/aphyspola.143.270","DOIUrl":"https://doi.org/10.12693/aphyspola.143.270","url":null,"abstract":"","PeriodicalId":7164,"journal":{"name":"Acta Physica Polonica A","volume":"2 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78359458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 : 2023-03-01DOI: 10.12693/aphyspola.143.221
F.M. Patan Alper
{"title":"Aqueous Synthesis of CdTe Quantum Dots and Optical Characterization Under High Voltage","authors":"F.M. Patan Alper","doi":"10.12693/aphyspola.143.221","DOIUrl":"https://doi.org/10.12693/aphyspola.143.221","url":null,"abstract":"","PeriodicalId":7164,"journal":{"name":"Acta Physica Polonica A","volume":"13 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72894484","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 : 2023-03-01DOI: 10.12693/aphyspola.143.262
A. Tekgül, T. Şahin, Hakan Köçkar, M. Alper
{"title":"Giant Magnetoresistance of the Electrodeposited FeCoCu/Cu Multilayers: Metal Oxide Formation with NaOH in the Electrolyte","authors":"A. Tekgül, T. Şahin, Hakan Köçkar, M. Alper","doi":"10.12693/aphyspola.143.262","DOIUrl":"https://doi.org/10.12693/aphyspola.143.262","url":null,"abstract":"","PeriodicalId":7164,"journal":{"name":"Acta Physica Polonica A","volume":"145 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72931884","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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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