Crystallographic direction dependence of direct current field induced strain and phase transitions in Na0.5Bi0.5TiO3- x %BaTiO3 single crystals near the morphotropic phase boundary

The crystallographic dependence of the DC electric (E) field induced strain and phase transition in Na0.5Bi0.5TiO3-5.6%BaTiO3 (NBT-5.6%BT) single crystals has been investigated. An induced transition between pseudocubic and tetragonal structures was observed under E = 10 kV/cm for fields applied alo...

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Bibliographic Details
Published in:Applied physics letters 2012-10, Vol.101 (14)
Main Authors: Luo, Chengtao, Ge, Wenwei, Zhang, Qinhui, Li, Jiefang, Luo, Haosu, Viehland, D.
Format: Article
Language:English
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Summary:The crystallographic dependence of the DC electric (E) field induced strain and phase transition in Na0.5Bi0.5TiO3-5.6%BaTiO3 (NBT-5.6%BT) single crystals has been investigated. An induced transition between pseudocubic and tetragonal structures was observed under E = 10 kV/cm for fields applied along the 〈001〉 direction, whereas an induced transition between pseudocubic and rhombohedral structures was observed when the E-field was applied along 〈111〉. Our results show near the morphotropic phase boundary that the phase stability of NBT-x%BT is dependent on the crystallographic direction along which E was applied.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4757877