In:
Journal of the American Ceramic Society, Wiley, Vol. 102, No. 8 ( 2019-08), p. 4670-4677
Abstract:
The field‐controlled phase transition is a promising concept for the design of novel multiferroic materials. Rare‐earth samarium‐modified bismuth ferrite (Bi 1− x Sm x FeO 3 ) possesses a morphotropic phase boundary (MPB) that has similar free energies between the polar and nonpolar phases, making it an exceptional candidate. In this study, we investigated the electric field cycling‐dependent behavior of ferroelectricity in Bi 1− x Sm x FeO 3 ceramics near MPB. During electric field cycling, a significantly enhanced remanent polarization was observed. Cycled Bi 0.86 Sm 0.14 FeO 3 and Bi 0.84 Sm 0.16 FeO 3 exhibited enhanced ferroelectric (remanent polarization 〉 30 μC/cm 2 ) and magnetic (remanent magnetization 〉 0.20 emu/g) properties at room temperature. Through a systematic study of dynamic hysteresis measurements and a structural analysis, these results were attributed to a field cycling‐induced nonpolar‐to‐polar phase transition. In situ high temperature measurements showed a previously unreported sharp anomaly of the piezoelectric coefficient ( d 33 ) near the magnetic transition point ( T N ). These results indicated a strong magnetoelectric coupling in rare earth‐modified bismuth ferrite materials, suggesting the possibility of magnetically modulated piezoelectricity.
Type of Medium:
Online Resource
ISSN:
0002-7820
,
1551-2916
DOI:
10.1111/jace.2019.102.issue-8
Language:
English
Publisher:
Wiley
Publication Date:
2019
detail.hit.zdb_id:
2008170-4
detail.hit.zdb_id:
219232-9
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