Article
Materials Science, Multidisciplinary
Vladimir V. Shvartsman, Dmitry D. Khalyavin, Nikolai M. Olekhnovich, Anatoli V. Pushkarev, Yuri V. Radyush, Andrei N. Salak
Summary: High-pressure synthesis of single-phase perovskite BiFe1-xScxO3 ceramics allows for study of their ferroelectric properties using piezoresponse force microscopy (PFM). Different compositions exhibit varying ferroelectric behavior after annealing, with the influence of mechanical stress also being a factor in phase transformation.
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2021)
Article
Chemistry, Physical
Rui Hu Mi, Bu Hang Chen, Xiao Li Zhu, Xiang Ming Chen
Summary: Ba(Ti0.25Zr0.25Hf0.25Sn0.25)O3 high-entropy ceramics were prepared and their dielectric and ferroelectric characteristics in association with the structures were investigated. The ceramics showed a single-phase perovskite structure as confirmed by X-ray diffraction and energy dispersive spectroscopy analysis. The materials exhibited a broad dielectric peak with strong frequency dispersion, indicating a relaxor nature due to nanoscale ferroelectric domain structures. The homogeneous microstructure contributed to reduced leakage current density and significantly improved dielectric strength, making these ceramics desirable for practical applications. Compared to similar systems, Ba(Ti1-xZrx)O3 & Ba(Ti1-xSnx)O3, the high-entropy ceramics demonstrated superior relaxor ferroelectric characteristics.
JOURNAL OF MATERIOMICS
(2023)
Article
Materials Science, Ceramics
Thanatep Phatungthane, Ratabongkot Sanjoom, Luiz F. Cotica, Gobwute Rujijanagul
Summary: BaFe(0.5)Ta(0.5)O(3) ceramics were prepared by a solid state reaction method, and the room temperature magnetoelectric effect was investigated. The results showed that a magnetoelectric effect can be obtained in the ceramics, and the contribution of grain boundaries was larger than that of grains.
JOURNAL OF ELECTROCERAMICS
(2023)
Article
Materials Science, Ceramics
Wen-Yuan Pan, Yu-Cheng Tang, Yang Yin, Ai-Zhen Song, Jing-Ru Yu, Sheng Ye, Bo-Ping Zhang, Jing-Feng Li
Summary: This study investigated the phase structure, ferroelectric, dielectric, light absorption, and photovoltaic properties in (Ba0.95Ca0.05)(Ti0.92Sn0.08-xZrx)O-3 ceramics, and found that negatively poled BCTSZ(0.06) ceramics exhibited a large photovoltaic response under simulated sunlight.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Yixuan Chen, Jie Jian, Jianguo Chen, Jinrong Cheng
Summary: Ternary ceramics of BF-xPT-0.13BZT were prepared by solid state reaction, showing perovskite structure with dominant tetragonal phases in x >= 0.29; the average grain size is 10-11 μm and exhibit low tan delta and high Curie temperature T-c.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Metallurgy & Metallurgical Engineering
Jesse Nii Okai Amu-Darko, Chen Zhang, Shahid Hussain, Samuel Leumas Otoo, Michael Freduah Agyemang
Summary: The environmentally-friendly relaxor ferroelectric ceramics were prepared and sintered, with Ba(Mg1/3Ta2/3)O-3 content affecting grain size and dielectric properties. Increasing BMT content led to improved dielectric performance and transition from ferroelectric to paraelectric phase.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2022)
Article
Thermodynamics
Rangel G. Aredes, Andre L. Bonaventura, Renato Boschilia Junior, Ronaldo S. Silva, Eduardo Antonelli
Summary: Lead-free piezoelectric ceramics with perovskite structure can exhibit excellent properties when specific phase transitions sequences and/or coexistence of multiple phases are involved. However, characterizing these phase transitions using isolated techniques can be inconclusive or require complex procedures. This study aimed to explore the combination of different techniques to investigate temperature-induced phase transitions and phase coexistence in ceramics of 0.66Ba(Zr0.2Ti0.8)O-3-0.44(Ba0.7Ca0.3)TiO3 (0.44BCZT), revealing three phase transitions and confirming physical anomalies indicating phase coexistence.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Chemistry, Multidisciplinary
Ayush Raj, Prabhasini Gupta, R. N. P. Choudhary
Summary: The effect of lanthanum substitution on the structural and electrical characteristics of Ba (Fe0.5Nb0.5)O-3 has been investigated in different compositions. Lanthanum doping at x = 0.15 significantly enhances the dielectric and ferroelectric behavior of the material, reducing the loss tangent.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2021)
Article
Materials Science, Ceramics
Xiyu Ma, Wenjing Shi, Yule Yang, D. O. Alikin, Y. Ya Shur, Jinghui Gao, Xiaoyong Wei, Gang Liu, Hongliang Du, Li Jin
Summary: Electrocaloric refrigeration is an emerging solid-state technology with advantages of high efficiency, miniaturization, eco-friendliness, and low cost. This paper investigates Ba(Ti1-xSnx)O-3 ceramics and reveals their structural, dielectric, ferroelectric, electrocaloric, and electrostrictive characteristics. The results show that increasing Sn4+ concentration leads to lower dielectric peaks and a phase diagram is constructed based on dielectric characteristics. The study also demonstrates a giant adiabatic temperature change of 6.36 K in the x = 0.04 ceramic sample and temperature and composition-insensitive electrostrictive behavior.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Vijay Bijalwan, Jaroslav Kastyl, Vladimfr Prajzler, Jirf Erhart, Vaclav Pouchly, Karel Maca
Summary: This work presents a promising approach to synthesize multifunctional-translucent BCZT-CeO2 ceramic for electro-mechanical/optical conversion. The ceramics achieved high dielectric permittivity, low dielectric loss, and extraordinary optical transmittance. Post-processing method further improved the piezoelectric properties of the ceramics.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Multidisciplinary
Mikhail Talanov, Alexander A. Bush, Vladimir P. Sirotinkin, Vladislav Kozlov
Summary: This study reveals a new structural mechanism of phase transition diffusion in ferroelectrics, which is associated with the enhanced broadening of the ferroelectric phase transition. The results show that the interaction of atomic displacements of A and B cations can lead to the enhancement of ferroelectric properties in the crossover region at a specific concentration.
Article
Chemistry, Physical
Rui Da Shi, Mei Ying Liu, Xiao Li Zhu, Xiang Ming Chen
Summary: Ordered domain engineering has been developed to modify and improve physical properties in complex perovskite ceramics. The present work demonstrates the successful implementation of ordered domain engineering in Ba(Ni1/3Nb2/3)O3 ceramics, leading to significant enhancements in electrical resistivity, thermal conductivity, dielectric strength, and energy storage density.
JOURNAL OF MATERIOMICS
(2022)
Article
Chemistry, Physical
Ye Zhao, En-Meng Liang, Xian Zhao, Chun-Ming Wang
Summary: This paper reports the correlations between the electrocaloric effect (ECE) and dielectric diffuseness of Ba(Ti1-xSnx)O-3 ceramics. The study demonstrates that as the Sn content increases, the dielectric diffuseness is strengthened, resulting in enhanced temperature stability of the ECE but decreased maximum ECE.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Review
Chemistry, Physical
Sen Peng, Yu Zhang, Tulin Yi
Summary: BZN microwave dielectric ceramics have attracted attention due to their high Q, near-zero tau(f), and suitable epsilon(r), making them promising materials for microwave devices. This article summarized the latest research progress of BZN ceramics, discussed preparation methods and performance modifications, and analyzed the problems faced by BZN ceramics and solutions to improve their performance, as well as their potential applications. It provides a reference for the design and preparation of BZN ceramics.
Article
Nanoscience & Nanotechnology
Chao Zhang, Zhanming Dou, Shizhi Zeng, Kanghua Li, Fangfang Zeng, Wenrong Xiao, Shiyong Qiu, Guifen Fan, Shenglin Jiang, Wei Luo, Qiuyun Fu, Guangzu Zhang
Summary: This study introduces low-radius Li+ into BaZr0.2Ti0.8O3 (BZT) through ion substitution engineering, leading to a change in internal lattice stress and a significant enhancement of the ferroelectric properties in BZT ceramics. Under the conditions of 333 K and 70 kV cm-1, the adiabatic temperature change of 5.7 mol% Li2CO3-doped BZT is 1.37 K, which is higher than that of pure BZT ceramics (0.61 K). Therefore, this work provides a simple but effective approach to design high-performance electrocaloric materials for next-generation refrigeration.
ACS APPLIED MATERIALS & INTERFACES
(2023)
