Investigation on relaxor-ferroelectric behavior of BNBT-KNN ceramics with Ta doping

Chenglong Zhang; Shurong Li; Suzhi Li; Le Zhang; Haijun Wu

doi:10.1142/S2010135X24400125

Journal of Advanced Dielectrics (Jun 2024)

Investigation on relaxor-ferroelectric behavior of BNBT-KNN ceramics with Ta doping

Chenglong Zhang,
Shurong Li,
Suzhi Li,
Le Zhang,
Haijun Wu

Affiliations

Chenglong Zhang: State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, 710049 Xi’an, China
Shurong Li: State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, 710049 Xi’an, China
Suzhi Li: State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, 710049 Xi’an, China
Le Zhang: School of Physics, Xi’an Jiaotong University, 710049 Xi’an, China
Haijun Wu: State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, 710049 Xi’an, China

DOI: https://doi.org/10.1142/S2010135X24400125
Journal volume & issue: Vol. 14, no. 03

Abstract

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In this study, BNBT-KNN-xTa2O5 was designed and synthesized, successfully achieving a reduction in the relaxor-ferroelectric phase transition temperature. Synergy between temperature-dependent ferroelectric testing and dielectric spectroscopy confirmed that the depoling temperature gradually decreased with increasing doping concentration. Fitting of the relaxation parameter and freezing temperature substantiated that the incorporation of Ta2O5 increased the degree of relaxation in BNBT-KNN-xTa2O5, thereby effectively lowering the relaxor-ferroelectric phase transition temperature.

Published in Journal of Advanced Dielectrics

ISSN: 2010-135X (Print); 2010-1368 (Online)
Publisher: World Scientific Publishing
Country of publisher: Singapore
LCC subjects: Science: Physics: Electricity and magnetism: Electricity
Website: http://www.worldscientific.com/worldscinet/jad

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