Campus Units

Materials Science and Engineering

Document Type

Article

Publication Version

Published Version

Publication Date

12-27-2017

Journal or Book Title

Materials Research Letters

Volume

6

Issue

3

First Page

159

Last Page

164

DOI

10.1080/21663831.2017.1419994

Abstract

Polarization-field double hysteresis loops have hardly ever been observed at room temperature in polycrystalline NaNbO3, one of a few lead-free antiferroelectric compounds. In this Letter, it is shown that the exposure of a modified NaNbO3 ceramic to bipolar electric fields of ±160 kV/cm at 100°C can preserve the double hysteresis loops at room temperature. These double hysteresis loops can still be observed after 125 days room temperature aging with some decay in maximum polarization. Frequency dependence analysis suggests that the double hysteresis loops originate from the antiferroelectric ↔ ferroelectric phase transition, not the charged defects.

A novel electrical treatment of a NaNbO3-based polycrystalline ceramic to achieve double hysteresis loops at room temperature is reported for the first time.

Comments

This article is published as Xiaoli Tan, Zunping Xu, Xiaoming Liu & Zhongming Fan (2018) Double hysteresis loops at room temperature in NaNbO3-based lead-free antiferroelectric ceramics, Materials Research Letters, 6:3, 159-164. doi: 10.1080/21663831.2017.1419994. Posted with permission.

Creative Commons License

Creative Commons Attribution 4.0 License
This work is licensed under a Creative Commons Attribution 4.0 License.

Copyright Owner

The Authors

Language

en

File Format

application/pdf

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