Electric field-induced tetragonal to orthorhombic phase transitions in [110]c-oriented BaTiO3 single crystals
2012; American Institute of Physics; Volume: 101; Issue: 23 Linguagem: Inglês
10.1063/1.4769368
ISSN1520-8842
AutoresD. J. Franzbach, Yijia Gu, Long‐Qing Chen, Kyle G. Webber,
Tópico(s)Photorefractive and Nonlinear Optics
ResumoElectric field-induced phase transitions in [110]c-oriented BaTiO3 single crystals were studied by macroscopic electrical measurements in the temperature range from 20 °C to 50 °C. Discontinuous, hysteretic jumps in the polarization and strain were observed, indicating a tetragonal ↔ orthorhombic phase transition. The critical electric field to induce the transition was found to shift to higher values with increasing temperature. The Landau-Devonshire theory was used to analyze the observed electric field-induced T ↔ O phase transitions.
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