Structural disorder, polarisation and the normal to relaxor ferroelectric transition in BaTiO 3 based perovskites

Date

2010

Authors

Liu, Yun
Withers, Raymond

Journal Title

Journal ISSN

Volume Title

Publisher

Taylor & Francis Group

Abstract

This paper uses structured diffuse scattering to compare and contrast the local crystal structure behaviour of the normal ferroelectric BaTiO3 with a range of relaxor ferroelectric substituted BaTiO3 materials. The results strongly suggest that both normal ferroelectric BaTiO3 and the relaxor ferroelectric substituted BaTiO3's have the same underlying polarisation mechanism i.e. inherent 1-D correlated Ti cation and neighbouring O anion displacements forming 1-D dipole clusters (or polar nano regions). The role of the substituting ions is not to induce the PNR's but rather to suppress homogeneous strain distortion, transverse correlation of the 1-D PNR's and a transition into a long range ordered ferroelctric state.

Description

Keywords

Keywords: BaTiO 3 ; ferroelectric; Long range; polar nano regions; Polarisation; Relaxor ferroelectric; Structural disorders; Structured diffuse scattering; Barium titanate; Crystal structure; Electron diffraction; Ferroelectricity; Perovskite; Polarizatio BaTiO3; electron diffraction; ferroelectric; polar nano regions; relaxor ferroelectric

Citation

Source

Ferroelectrics

Type

Journal article

Book Title

Entity type

Access Statement

License Rights

DOI

10.1080/00150191003697039

Restricted until

2037-12-31