Quenching induced depolarization delay and structure evolution in (1-x)Na1/2Bi1/2TiO3-xBiFeO3 ceramics

IF 5.3 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Scripta Materialia Pub Date : 2025-01-21 DOI:10.1016/j.scriptamat.2025.116573

Pengrong Ren , Wenchao Lin , Zhihong Luo , Mao-Hua Zhang , Laijun Liu , Changbai Long , Lixue Zhang

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Abstract

As a relaxor, Na_1/2Bi_1/2TiO₃ (NBT) presents limitations in high temperature application because of thermally induced depolarization. Stabilizing the polar ferroelectric phase is key for deferring the temperature dependent depolarization. In this work, a transition from relaxor to ferroelectric is induced by incorporating BiFeO₃ (BFO) in NBT. The transition is characterized by temperature dependent dielectric and piezoelectric properties, and supported by mechanical stress-strain tests and in-situ electric field dependent synchrotron XRD analysis. To improve the depolarization temperature (T_d) further, 40NBT-60BFO (60BFO) is subject to a quenching treatment. T_d of 60BFO increases from 300 °C to 520 °C upon quenching. The significant increase in T_d is explained by analyzing the average and local structure changes. It is found that the ordered Bi and Na ions and the intensified Bi-O bonding upon quenching contribute to the increase in T_d. This work clarifies the mechanism of quenching induced enhancement T_d in NBT-BFO ceramics.

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来源期刊

Scripta Materialia 工程技术-材料科学：综合

CiteScore

11.40

自引率

5.00%

发文量

581

审稿时长

34 days

期刊介绍： Scripta Materialia is a LETTERS journal of Acta Materialia, providing a forum for the rapid publication of short communications on the relationship between the structure and the properties of inorganic materials. The emphasis is on originality rather than incremental research. Short reports on the development of materials with novel or substantially improved properties are also welcomed. Emphasis is on either the functional or mechanical behavior of metals, ceramics and semiconductors at all length scales.