Journal of Electroceramics最新文献_第2页

Comparative analysis of magnetocaloric effect in La0.67-xEuxBa0.33Mn0.85Fe0.15O3 (x = 0 and 0.1) polycrystalline manganites: experimental vs. theoretical determination La0.67-xEuxBa0.33Mn0.85Fe0.15O3（x = 0 和 0.1）多晶锰矿中磁致效应的比较分析：实验与理论测定结果对比

IF 1.7 4区材料科学

Journal of Electroceramics Pub Date : 2024-07-20 DOI: 10.1007/s10832-024-00358-w

Aïda Ben Jazia Kharrat, Nassira Chniba-Boudjada, Wahiba Boujelben

{"title":"Comparative analysis of magnetocaloric effect in La0.67-xEuxBa0.33Mn0.85Fe0.15O3 (x = 0 and 0.1) polycrystalline manganites: experimental vs. theoretical determination","authors":"Aïda Ben Jazia Kharrat, Nassira Chniba-Boudjada, Wahiba Boujelben","doi":"10.1007/s10832-024-00358-w","DOIUrl":"10.1007/s10832-024-00358-w","url":null,"abstract":"<div>This research study explores the magnetic and magnetocaloric properties of La0.67-xEuxBa0.33Mn0.85Fe0.15O3 (x = 0 and 0.1) magnetic compounds elaborated using the Sol–Gel method, based on a phenomenological approach proposed by Mahmoud Aly Hamad. The studied compounds exhibit a second-order ferromagnetic (FM) to paramagnetic (PM) transition with increasing temperature. A correlation between the experimental measurements and the theoretical analysis is established. Indeed, the value of the magnetocaloric effect was determined from the theoretical model based on magnetization as a function of temperature at several magnetic fields. Under an applied magnetic field of 5T, the absolute values of the maximum magnetic entropy change are evaluated at 0.92 and 0.60 J kg−1 K−1 for x = 0 and 0.1 respectively. This reduction may be attributed to a Curie temperature distribution implying also a decrease in the relative cooling power (RCP). The RCP and the specific heat capacity values are also estimated thanks to this model. The results predicted by this model allow us to propose these compounds as promising candidates for magnetic refrigeration.</div>","PeriodicalId":625,"journal":{"name":"Journal of Electroceramics","volume":"52 3","pages":"245 - 254"},"PeriodicalIF":1.7,"publicationDate":"2024-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141738614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation of phase structure and electrical properties of PMN-PSN-PNN–PZT ceramics with different PNN content 不同 PNN 含量的 PMN-PSN-PNN-PZT 陶瓷的相结构和电气性能研究

IF 1.7 4区材料科学

Journal of Electroceramics Pub Date : 2024-07-18 DOI: 10.1007/s10832-024-00355-z

Tao Chu, Xingchen He, Tao Li, Jun Deng, Cailin Wang, Juping Xu, Aigen Huang

{"title":"Investigation of phase structure and electrical properties of PMN-PSN-PNN–PZT ceramics with different PNN content","authors":"Tao Chu, Xingchen He, Tao Li, Jun Deng, Cailin Wang, Juping Xu, Aigen Huang","doi":"10.1007/s10832-024-00355-z","DOIUrl":"10.1007/s10832-024-00355-z","url":null,"abstract":"<div>Piezoelectric ceramics, as an essential electronic material, are widely used in various actuators and ultrasonic transducers. In this study, piezoceramics in the formula Pb0.94Sr0.04Ba0.02(Mg1/3Nb2/3)0.025(Sb1/2Nb1/2)0.025(Ni1/3Nb2/3)x(Zr0.48Ti0.52)0.95−xO3 + 0.2wt%Li2CO3, where x = 0.21 − 0.17(abbreviated as PMN-PSN-xPNN-(0.95-x)PZT) were investigated. By changing the PNN content from 0.21 to 0.17, high piezoelectric coefficient d33 from 860 pC/N to 700 pC/N, high Curie temperature Tc from 137 ℃ to 168 ℃ were obtained. All the ceramics show excellent electrical properties. It is 15 − 20% better than PNN-PZT or doped PNN-PZT piezoelectric ceramics in certain aspects. What’s more, the ceramics also carry extraordinary electromechanical coupling factor kp (from 67 to 73%). Hence, this is an excellent candidate for actuators and transducers applications.</div>","PeriodicalId":625,"journal":{"name":"Journal of Electroceramics","volume":"52 3","pages":"238 - 244"},"PeriodicalIF":1.7,"publicationDate":"2024-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141738615","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ferroelectric stability and fatigue mechanism of BNKT ceramics by Nb doping 掺杂铌的 BNKT 陶瓷的铁电稳定性和疲劳机理

IF 1.7 4区材料科学

Journal of Electroceramics Pub Date : 2024-07-17 DOI: 10.1007/s10832-024-00359-9

Binbin Chen, Yang Hu, Huazhang Zhang, Wen Chen, Jing Zhou

{"title":"Ferroelectric stability and fatigue mechanism of BNKT ceramics by Nb doping","authors":"Binbin Chen, Yang Hu, Huazhang Zhang, Wen Chen, Jing Zhou","doi":"10.1007/s10832-024-00359-9","DOIUrl":"10.1007/s10832-024-00359-9","url":null,"abstract":"<div>The fatigue behavior of Bi0.5Na0.4K0.1TiO3-based ceramics depends on the polarity. While the non-ergodic relaxor ceramics have large residual polarization but poor fatigue behavior, the ergodic relaxor ceramics have excellent fatigue resistance but tiny residual polarization. Therefore, obtaining ferroelectric ceramics with high residual polarization and excellent fatigue resistance is challenging due to the trade-off between non-ergodic relaxor and ergodic relaxor. Here, we modulate the free energy barrier by doping relaxant Nb to achieve the coexistence of non-ergodic and ergodic relaxor phases. At 0.6% Nb doping, the residual polarization is large at 2Pr = 49.3 µC/cm2, increased to 54.23 µC/cm2 after 102 cycles and decreased to 53.04 µC/cm2 after 105 cycles, indicating good fatigue resistance behavior. The large residual polarization is due to the metastable ferroelectric state, while the excellent fatigue resistance may be attributed to the field-induced ferroelectric-relaxor phase transition.</div>","PeriodicalId":625,"journal":{"name":"Journal of Electroceramics","volume":"52 3","pages":"229 - 237"},"PeriodicalIF":1.7,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141720257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Retraction Note: Porous ceramics based on diatomite: Mechanical properties and evolution of morphology after deformation 基于硅藻土的多孔陶瓷：变形后的力学性能和形态演变

IF 1.7 4区材料科学

Journal of Electroceramics Pub Date : 2024-07-13 DOI: 10.1007/s10832-024-00353-1

Arkadiy A. Skvortsov, Mikhail N. Luk’yanov, Irina E. Chebeneva, Anna A. Skvortsova

引用次数: 0

Influence of synthesis method on structural, microstructural, and magnetic properties of Bi0.5La0.5FeO3 ceramics 合成方法对 Bi0.5La0.5FeO3 陶瓷的结构、微观结构和磁性能的影响

IF 1.7 4区材料科学

Journal of Electroceramics Pub Date : 2024-07-09 DOI: 10.1007/s10832-024-00356-y

Athava Simhadri, B. Durga Lakshmi, R. Jyothi, K. Sreenu, Ayman A. Ghfar, P. Rosaiah, K. S. K. R. Chandra Sekhar

{"title":"Influence of synthesis method on structural, microstructural, and magnetic properties of Bi0.5La0.5FeO3 ceramics","authors":"Athava Simhadri, B. Durga Lakshmi, R. Jyothi, K. Sreenu, Ayman A. Ghfar, P. Rosaiah, K. S. K. R. Chandra Sekhar","doi":"10.1007/s10832-024-00356-y","DOIUrl":"10.1007/s10832-024-00356-y","url":null,"abstract":"<div>(Bi0.5La0.5)FeO3 Orthoferrite ceramics were prepared by a conventional solid-state reaction method on a bulk scale and on a nano range by sol–gel auto combustion and Hydrothermal methods, respectively. The phase purity and crystallinity of the prepared ceramics have been examined by X–ray diffraction study. Broadening of the maximum intensity peak (hkl) and smaller crystallite size has been noticed in both chemical methods i.e., sol–gel and hydrothermal. Rietveld refinement confirmed the presence of orthorhombic symmetry with a space group (Pnma) for the ceramics synthesized through all three processes. The crystallite size, particle morphology, and grain microstructure formation mechanism were correlated for prepared ceramics with FESEM and XRD results. The influence of synthesis conditions on structure, microstructure, and magnetic studies has been studied. The M-H hysteresis loop study reflects that tuning of particles or crystallite size might induce a productive enhancement in magnetization response for chemically synthesized ceramics.</div>","PeriodicalId":625,"journal":{"name":"Journal of Electroceramics","volume":"52 3","pages":"216 - 228"},"PeriodicalIF":1.7,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141569068","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Temperature dependent dielectric mechanism of lead-free double perovskite Sr2YbNbO6 无铅双包晶 Sr2YbNbO6 随温度变化的介电机理

IF 1.7 4区材料科学

Journal of Electroceramics Pub Date : 2024-07-05 DOI: 10.1007/s10832-024-00354-0

Arpita Barua, Sanjoy Kumar Dey, Sanjay Kumar

引用次数: 0

A comprehensive study of structural, dielectric, electrical, thermal, and optical properties of Na/W co-doped BiMnO3 complex electroceramic; (Bi1/2Na1/2)(Mn1/2W1/2)O3 对 Na/W 共掺杂 BiMnO3 复合物电陶瓷；(Bi1/2Na1/2)(Mn1/2W1/2)O3 的结构、介电、电学、热学和光学特性的综合研究

IF 1.7 4区材料科学

Journal of Electroceramics Pub Date : 2024-06-24 DOI: 10.1007/s10832-024-00347-z

Sudhansu Sekhar Hota, Debasish Panda, Monalisa Jena, Swayangshree Ojha, Ananya Samal, Ram Naresh Prasad Choudhary

{"title":"A comprehensive study of structural, dielectric, electrical, thermal, and optical properties of Na/W co-doped BiMnO3 complex electroceramic; (Bi1/2Na1/2)(Mn1/2W1/2)O3","authors":"Sudhansu Sekhar Hota, Debasish Panda, Monalisa Jena, Swayangshree Ojha, Ananya Samal, Ram Naresh Prasad Choudhary","doi":"10.1007/s10832-024-00347-z","DOIUrl":"10.1007/s10832-024-00347-z","url":null,"abstract":"<div>In this report, we present the fabrication through the solid-state method and subsequent characterization (structural, electrical, optical, and thermal properties) of a lead-free Na/W modified complex BiMnO3 ceramic of a chemical composition (Bi1/2Na1/2)(Mn1/2W1/2)O3. The structural analysis, including the determination of structure and lattice parameters, was performed using X-ray diffraction data, revealing a monoclinic crystal structure of the material. Additional insights into its vibrational properties were obtained through Raman spectroscopy and Fourier Transform Infrared spectrum. The electronic behaviour of the prepared sample was investigated using photoluminescence (PL). Scanning electron microscope analysis revealed a uniform distribution of grains. The energy-dispersive X-ray study confirmed compositional uniformity. Furthermore, a comprehensive analysis of dielectric properties, impedance, modulus, and conductivity was carried out over a range of frequencies (1 kHz – 1 MHz) and temperatures (25 °C – 500 °C) to understand the Maxwell–Wagner type of dielectric dispersion, relaxation, and transport mechanisms. The Nyquist plots and the temperature-dependent conductivity data exhibited a negative temperature coefficient of resistance behavior. The modulus data indicated a scaling nature, indicative of non-Debye type relaxation. Additionally, the study of polarization with an electric field suggested the possibility of a ferroelectric behavior of the material.</div>","PeriodicalId":625,"journal":{"name":"Journal of Electroceramics","volume":"52 2","pages":"184 - 200"},"PeriodicalIF":1.7,"publicationDate":"2024-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141502410","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of CoFe2O4 particle size on the development of in-situ phases and magnetic properties of ex-situ combustion derived ferrite-BaTiO3 composite CoFe2O4 粒径对原位燃烧衍生铁氧体-BaTiO3 复合材料的原位相发展和磁性能的影响

IF 1.7 4区材料科学

Journal of Electroceramics Pub Date : 2024-06-12 DOI: 10.1007/s10832-024-00352-2

Sreenivasulu Pachari, Swadesh K. Pratihar, Bibhuti B. Nayak

{"title":"Influence of CoFe2O4 particle size on the development of in-situ phases and magnetic properties of ex-situ combustion derived ferrite-BaTiO3 composite","authors":"Sreenivasulu Pachari, Swadesh K. Pratihar, Bibhuti B. Nayak","doi":"10.1007/s10832-024-00352-2","DOIUrl":"10.1007/s10832-024-00352-2","url":null,"abstract":"<div>The evolved in-situ phases may tune the structural parameters and magnetic properties of the ferrite-BaTiO3 based composite. Here, CoFe2O4 is prepared, and its particle size is modified by calcination temperature. Further, it investigates the influence of CoFe2O4 particle size on the development of in-situ phases in ferrite-BaTiO3 based composite prepared via an ex-situ gel- combustion and studies its structural parameters as well as magnetic properties at different calcination temperatures. In-situ phases such as plate-like morphologies of barium hexaferrite and hexagonal barium titanate are evolved along with polyhedral barium titanate and cobalt ferrite in these composites, but the development of these in-situ phases is found to be dependent on the particle size of CoFe2O4 as well as calcination temperature of the composite powders. Structural parameters, crystallite size, particle size, weight% of phases, and M-H loop as a function of the calcination temperature of these composites have been studied in detail.</div>","PeriodicalId":625,"journal":{"name":"Journal of Electroceramics","volume":"52 2","pages":"170 - 183"},"PeriodicalIF":1.7,"publicationDate":"2024-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141352377","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of Eu and Mn co-doping on temperature dependent dielectric relaxation behaviour and electric conduction mechanisms of bismuth ferrite 掺杂 Eu 和 Mn 对铋铁氧体随温度变化的介电弛豫行为和导电机制的影响

IF 1.7 4区材料科学

Journal of Electroceramics Pub Date : 2024-05-10 DOI: 10.1007/s10832-024-00346-0

Amod Kumar, Aliva Panigrahi, Mukesh Shekhar, Lawrence Kumar, Pawan Kumar

{"title":"Effect of Eu and Mn co-doping on temperature dependent dielectric relaxation behaviour and electric conduction mechanisms of bismuth ferrite","authors":"Amod Kumar, Aliva Panigrahi, Mukesh Shekhar, Lawrence Kumar, Pawan Kumar","doi":"10.1007/s10832-024-00346-0","DOIUrl":"10.1007/s10832-024-00346-0","url":null,"abstract":"<div>The temperature dependent microscopic conduction processes and dielectric relaxations in Eu and Mn co-doped multiferroic bismuth ferrite have been examined using complex frequency-dependent ac conductivity, electric modulus and complex impedance examinations. The modified Debye’s function was used to explore the dispersion behaviour of the dielectric constant. The correlated barrier hopping concept is supported by the frequency variation in ac conductivity at various temperatures, which follows Jonscher’s power law. It was observed that when the co-doping concentration is low, the thermally assisted correlated barrier hopping (CBH) conduction model is better suited for the present samples whereas the overlapping large polaron tunnelling (OLPT) conduction model is better suited for higher co-doping concentrations. By looking at scaling curves for imaginary impedance (Z'') and modulus (M''), thermally induced relaxation processes have been demonstrated. It can be shown from a comparison of the Z'' and M'' spectra that charge carrier motion, particularly the dominance of short-range charge carriers which is effective at low temperatures while long-range charge carriers which is effective at high temperatures, leads to dielectric relaxation. By looking at semi-circular arcs on the Nyquist plot, it can be shown that at high temperature the electrical conduction process for the nanocrystalline sample is influenced by both grain and grain boundaries contributions. According to the study of ac conductivity under different temperatures, all compounds transport electricity with the help of electronic hopping, oxygen vacancy movement, or/and the production of the defects.</div>","PeriodicalId":625,"journal":{"name":"Journal of Electroceramics","volume":"52 2","pages":"144 - 169"},"PeriodicalIF":1.7,"publicationDate":"2024-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140937759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

On the mass action law and the power law response in tin dioxide gas sensors 论二氧化锡气体传感器的质量作用定律和幂律响应

IF 1.7 4区材料科学

Journal of Electroceramics Pub Date : 2024-05-08 DOI: 10.1007/s10832-024-00351-3

Daniel A. Mirabella, Paula M. Desimone, Celso M. Aldao

引用次数: 0