Effectively Control Negative Thermal Expansion of Single-phase Ferroelecrics of PbTiO3-(Bi,La)FeO3 over a Giant Range

Published

August 16, 2013

Author(s)

Jun Chen, Fangfang Wang, Qingzhen Huang, Lei Hu, Xiping Song, Jinxia Deng, Ranbo Yu, Xianran Xing

Abstract

Control of negative thermal expansion is a fundamentally interesting topic in the negative thermal expansion materials in order for the future applications. However, it is a challenge to control the negative thermal expansion in individual pure materials over a large scale. Here, we report an effective way to control the coefficient of thermal expansion from a giant negative to a near zero thermal expansion by means of adjusting the spontaneous volume ferroelectrostriction (SVFS) in the system of PbTiO₃-(Bi,La)FeO₃ ferroelectrics. The adjustable range of thermal expansion contains most negative thermal expansion materials. The abnormal property of negative or zero thermal expansion previously observed in ferroelectrics is well understood according to the present new concept of spontaneous volume ferroelectrostriction. The present studies could be useful to control of thermal expansion of ferroelectrics, and could be extended to multiferroic materials whose properties of both ferroelectricity and magnetism are coupled with thermal expansion.

Citation

Scientific Reports

Volume

3

Issue

2458

Pub Type

Journals

Download Paper

Local Download

Keywords

negative thermal expansion, ferroelecrics, neutron powder diffraction diffraction

Citation

Chen, J. , Wang, F. , Huang, Q. , Hu, L. , Song, X. , Deng, J. , Yu, R. and Xing, X. (2013), Effectively Control Negative Thermal Expansion of Single-phase Ferroelecrics of PbTiO₃-(Bi,La)FeO₃ over a Giant Range, Scientific Reports, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=914480 (Accessed December 1, 2024)