TU Darmstadt / ULB / TUbiblio

Coexistence of ergodicity and nonergodicity in LaFeO3-modified Bi1/2(Na0.78K0.22)1/2TiO3relaxors

Han, Hyoung-Su and Jo, Wook and Rödel, Jürgen and Hong, In-Ki and Tai, Weon-Pil and Lee, Jae-Shin (2012):
Coexistence of ergodicity and nonergodicity in LaFeO3-modified Bi1/2(Na0.78K0.22)1/2TiO3relaxors.
24, In: Journal of Physics: Condensed Matter, (36), p. 365901, ISSN 0953-8984, [Online-Edition: http://dx.doi.org/10.1088/0953-8984/24/36/365901],
[Article]

Abstract

The effect of LaFeO3 addition to Bi1/2(Na0.78K0.22)1/2TiO3 ceramics on the phase stability and macroscopic functional properties was investigated. Similarly to other chemical modifiers known in the literature, LaFeO3 addition suppresses an electric-field-induced long-range ferroelectric order, giving rise to a giant unipolar strain of ~0.3% at 2 mol% LaFeO3 addition. Time-dependent changes in polarization and strain hysteresis loops both during successive electrical cycling and after removal of the electric field suggest that a specimen with 2 mol% LaFeO3 consists of both ergodic and nonergodic phases, which is unique among the known relaxor materials.

Item Type: Article
Erschienen: 2012
Creators: Han, Hyoung-Su and Jo, Wook and Rödel, Jürgen and Hong, In-Ki and Tai, Weon-Pil and Lee, Jae-Shin
Title: Coexistence of ergodicity and nonergodicity in LaFeO3-modified Bi1/2(Na0.78K0.22)1/2TiO3relaxors
Language: English
Abstract:

The effect of LaFeO3 addition to Bi1/2(Na0.78K0.22)1/2TiO3 ceramics on the phase stability and macroscopic functional properties was investigated. Similarly to other chemical modifiers known in the literature, LaFeO3 addition suppresses an electric-field-induced long-range ferroelectric order, giving rise to a giant unipolar strain of ~0.3% at 2 mol% LaFeO3 addition. Time-dependent changes in polarization and strain hysteresis loops both during successive electrical cycling and after removal of the electric field suggest that a specimen with 2 mol% LaFeO3 consists of both ergodic and nonergodic phases, which is unique among the known relaxor materials.

Journal or Publication Title: Journal of Physics: Condensed Matter
Volume: 24
Number: 36
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Nonmetallic-Inorganic Materials
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 22 Aug 2012 13:04
Official URL: http://dx.doi.org/10.1088/0953-8984/24/36/365901
Identification Number: doi:10.1088/0953-8984/24/36/365901
Export:
Suche nach Titel in: TUfind oder in Google
Send an inquiry Send an inquiry

Options (only for editors)

View Item View Item