TITLE

Phase transition and huge ferroelectric polarization observed in BiFe1-xGaxO3 thin films

AUTHOR(S)
Yan, Jingdan; Gomi, Manabu; Yokota, Takeshi; Song, Huaihe
PUB. DATE
June 2013
SOURCE
Applied Physics Letters;6/3/2013, Vol. 102 Issue 22, p222906
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We prepared the chemical-solution deposited films of BiFe1-xGaxO3, which was previously only possibly synthesized under high-pressure and high-temperature. The thin films crystallized in rhombohedral perovskite structure (R3c) up to x = 0.05 and in tetragonal-like monoclinic structure (Cm) above x = 0.2. The coexistence of R3c and Cm phases was observed at x = 0.1. It is found that Bi-based film with coexistence phase exhibits a huge ferroelectric polarization of 230 μC cm-2, which can be attributed to the presence of the morphotropic phase boundary.
ACCESSION #
88041238

 

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