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Jo, Wook
Sustainable Functional Ceramics Lab
Research Interests
  • Lead-free piezoceramics, ultra - low temperature sintering, ferroelectrics, relaxor ferroelectrics, 2D materials, magnetoelectric materials, multiferroics


Coexistence of ergodicity and nonergodicity in LaFeO3-modified Bi-1/2(Na0.78K0.22)(1/2)TiO3 relaxors

DC Field Value Language Han, Hyoung-Su ko Jo, Wook ko Roedel, Juergen ko Hong, In-Ki ko Tai, Weon-Pil ko Lee, Jae-Shin ko 2014-10-21T08:34:43Z - 2014-10-21 ko 2012-09 -
dc.identifier.citation JOURNAL OF PHYSICS-CONDENSED MATTER, v.24, no.36, pp. - ko
dc.identifier.issn 0953-8984 ko
dc.identifier.uri -
dc.identifier.uri ko
dc.description.abstract The effect of LaFeO3 addition to Bi-1/2(Na0.78K0.22)(1/2)TiO3 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 similar to 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. ko
dc.description.statementofresponsibility close -
dc.language ENG ko
dc.publisher IOP PUBLISHING LTD ko
dc.subject Chemical modifiers ko
dc.subject Electrical cycling ko
dc.subject Ergodicity ko
dc.subject Ergodics ko
dc.subject Ferroelectric order ko
dc.subject Functional properties ko
dc.subject Nonergodicity ko
dc.subject Relaxor materials ko
dc.subject Relaxors ko
dc.subject Strain hysteresis loops ko
dc.subject Time-dependent changes ko
dc.subject TiO ko
dc.title Coexistence of ergodicity and nonergodicity in LaFeO3-modified Bi-1/2(Na0.78K0.22)(1/2)TiO3 relaxors ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-84865429631 ko
dc.identifier.wosid 000308153300013 ko
dc.type.rims ART ko
dc.description.wostc 11 *
dc.description.scopustc 6 * 2015-05-06 * 2014-10-21 *
dc.identifier.doi 10.1088/0953-8984/24/36/365901 ko
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