Journals >Journal of Advanced Dielectrics
Contents
2023
Volume: 13 Issue 2
8 Article(s)
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Research Articles
Electric field-induced phase transition from the glasslike to paraelectric phase and dielectric spectra hardening in PMN single crystal
E. Koroleva, A. Molokov, and S. Vakhrushev
One of the key points in the physics of the relaxors is their response to the applied DC field. Many studies of this topic were made, in particular on the influence of the field on the dielectric properties. However, practically, in all the cases, the measurements were performed at a fixed frequency and usually with thOne of the key points in the physics of the relaxors is their response to the applied DC field. Many studies of this topic were made, in particular on the influence of the field on the dielectric properties. However, practically, in all the cases, the measurements were performed at a fixed frequency and usually with the change in the temperature at the fixed field strength. In this paper, we report the evolution of the dielectric spectra at low frequencies (0.1 Hz
Journal of Advanced Dielectrics
- Publication Date: Jan. 01, 1900
- Vol. 13, Issue 2, 2250021 (2023)
Fabrication plate-like BaBi4Ti4
Xiaoying Feng, Bei Xu, Xiaoyu Xu, Penghui Chen, Zhuozhao Wu, Duo Teng, Jie Xu, and Feng Gao
Plate-like single-crystalline BaBi4Ti4O15 particles were synthesized by the molten salt synthesis (MSS) method. The effects of sintering temperature, holding time, and NaCl–KCl molten salt content on the phase structure and morphology of plate-like BaBi4-Ti4O15 particles were investigated. The results show that plate-lPlate-like single-crystalline BaBi4Ti4
Journal of Advanced Dielectrics
- Publication Date: Jan. 01, 1900
- Vol. 13, Issue 2, 2250022 (2023)
Ferroelectric solid solutions with perovskite- and columbite-type components: From structures formation to domain and hysteresis phenomena
M. O. Moysa, V. Yu. Topolov, K. P. Andryushin, A. V. Nagaenko, L. A. Shilkina, M. V. Il’ina, O. I. Soboleva, S. Sahoo, and L. A. Reznichenko
The paper reports results on the complex study on ferroelectric ceramics that represent solid solutions containing components with a perovskite-type or columbite-type structure. Solid solutions of a three-component (1−x−y)NaNbO3−xKNbO3−yCdNb2O6 system are manufactured at x = 0.05–0.20 and y = 0.10. Domain structures inThe paper reports results on the complex study on ferroelectric ceramics that represent solid solutions containing components with a perovskite-type or columbite-type structure. Solid solutions of a three-component (1
Journal of Advanced Dielectrics
- Publication Date: Jan. 01, 1900
- Vol. 13, Issue 2, 2250023 (2023)
Microstructure regulation and failure mechanism study of BaTiO3-based dielectrics for MLCC application
Yan Gu, Faqiang Zhang, Wanghua Wu, and Zhifu Liu
Most widely used dielectrics for MLCC are based on BaTiO3 composition which inevitably shows performance degradation during the application due to the migration of oxygen vacancies (Vo⋅⋅). Here, the BaTiO3, (Ba0.97Ca0.03)TiO3, Ba(Ti0.98Mg0.02)O3, (Ba0.97Ca0.03)(Ti0.98Mg0.02)O3, (Ba0.96Ca0.03Dy0.01)(Ti0.98Mg0.02)O3 ceraMost widely used dielectrics for MLCC are based on BaTiO3 composition which inevitably shows performance degradation during the application due to the migration of oxygen vacancies (
Journal of Advanced Dielectrics
- Publication Date: Jan. 01, 1900
- Vol. 13, Issue 2, 2350002 (2023)
High quality crystal growth and characterization of ferroelectric
Lei Liu, Fangyi Yin, Guiyuan Zhao, Limei Zheng, Xiuwei Fu, Zhitai Jia, and Xutang Tao
B0.77Ca0.23TiO3 (BCT) single crystal has been widely studied as a promising lead-free ferroelectric material. In this work, high-quality BCT crystal was successfully grown by the Czochralski (CZ) method. The as-grown crystal is crack-free and shows black coloration. It possesses a high dielectric stability over a wide
Journal of Advanced Dielectrics
- Publication Date: Jan. 01, 1900
- Vol. 13, Issue 2, 2350005 (2023)
Large piezoelectric anisotropy and high hydrostatic piezoelectric activity due to an appreciable orientation effect and porosity in novel 2–2–0 composites
Vitaly Yu. Topolov, Andrey V. Krivoruchko, and Natalia V. Prutsakova
The polarization orientation effect and porosity effect on the piezoelectric properties and related parameters are studied in 2–2-type composites based on domain-engineered relaxor-ferroelectric [011]-poled single crystals. The parameters, which are of great interest, are an anisotropy of the piezoelectric coefficientsThe polarization orientation effect and porosity effect on the piezoelectric properties and related parameters are studied in 2–2-type composites based on domain-engineered relaxor-ferroelectric [011]-poled single crystals. The parameters, which are of great interest, are an anisotropy of the piezoelectric coefficients
Journal of Advanced Dielectrics
- Publication Date: Jan. 01, 1900
- Vol. 13, Issue 2, 2350006 (2023)
Composite materials ferropiezoelectric ceramics-polymer for hydroacoustic receivers
V. G. Smotrakov, V. V. Eremkin, E. I. Sitalo, N. V. Malomyzheva, and N. A. Boldyrev
The purpose of this work is to study the processes of interfacial interactions, their influence on the piezoelectric properties in highly elastic composite structures, to establish the patterns that determine the volume-sensitive piezoelectric characteristics of composites and to create effective piezoelectric materialThe purpose of this work is to study the processes of interfacial interactions, their influence on the piezoelectric properties in highly elastic composite structures, to establish the patterns that determine the volume-sensitive piezoelectric characteristics of composites and to create effective piezoelectric materials for hydroacoustic receiving devices. In the process of this work, the development of a method for obtaining anisotropic ferropiezoelectric ceramics, the development of methods for the preparation of perfect ceramic powders and composite materials based on thermoplastic fluoropolymers and the study of composite materials based on lead–calcium titanate were carried out. As a result of the study, the dependences of the hydrostatic parameters of the composites on the degree of filling, particle size distribution, piezoelectric anisotropy of the active phase and the elastic properties of the polymer matrix were established. Composite materials were based on ceramics of the PT–CT system and thermoplastic fluoropolymers F-2ME, F-62, F-2N with a degree of filling with a ceramic phase from 30 to 60% vol. The dependences of the hydrostatic piezoelectric moduli
Journal of Advanced Dielectrics
- Publication Date: Jan. 01, 1900
- Vol. 13, Issue 2, 2350007 (2023)
Structure and electrical properties of La2O3-doped (K,Na,Li)(Nb,Ta)O3-(Bi,Na)TiO3 ceramics
Bingsen Wang, Junjun Wang, Jiaqi Li, Miao Yang, Minghao Huang, Tianyi Ma, Yu Tian, and Fengmin Wu
In this paper, Lead-free based on 0.97(K0.48Na0.48Li0.04)(Nb0.8Ta0.2)O3–0.03Bi0.5Na0.5TiO3 with additives La2O3 (1, 2, 3, 4 wt.%) was prepared by the solid reaction method, and the effect of La dopant on the structural and electrical properties is investigated. The result indicates La dopant considerably decreases the In this paper, Lead-free based on 0.97(
Journal of Advanced Dielectrics
- Publication Date: Jan. 01, 1900
- Vol. 13, Issue 2, 2350010 (2023)
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