Phase Transition of Ba_(0.5)Sr_(0.5)TiO_3 Thin Film Induced by Electric and Temperature Multifield
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- 英文论文题名：Phase Transition of Ba_(0.5)Sr_(0.5)TiO_3 Thin Film Induced by Electric and Temperature Multifield
- 论文作者：ZHU Wei-Ming ; ZHANG Xiao ; 朱哲
- 英文论文作者：ZHU Wei-Ming ; ZHANG Xiao ; ZHU Zhe ; School of Materials Science and Engineering ; Xiangtan University ; Key Laboratory of Low Dimensional Materials and Application Technology of Ministry of Education ; School of Materials Science and Engineering ; Xiangtan University
- 年：2016
- 作者机构：School of Materials Science and Engineering,Xiangtan University;Key Laboratory of Low Dimensional Materials and Application Technology of Ministry of Education,School of Materials Science and Engineering,Xiangtan University;
- 英文论文关键词：phase transition ; nonlinear thermodynamic ; phase diagrams
- 会议召开时间：2016-09-27
- 会议录名称：第十四届全国物理力学学术会议缩编文集
- 语种：英文
- 分类号：O484
- 学会代码：AGLU
- 会议名称：第十四届全国物理力学学术会议
- 会议地点：中国四川绵阳
- 主办单位：中国力学学会物理力学专业委员会
- 学会名称：中国力学学会
- 页数：1
- 文件大小：26k
- 原文格式：O
- 会议级别：全国
摘要
Based on nonlinear thermodynamic theory,the a_1,c_2 and r_2 phases with the negative P_3component are introduced to describe the electric-generated phase transition of Ba_(0.5) Sr_(0.5) TiO_3(BST50) thin film,and the misfit strain-electric field phase diagrams and the electric field-polarization components curves under different temperatures are simulated for the single-domain state of a single grain of BST50 thin film grown on the cubic substrate.Furthermore,we calculated the dielectric constants as a function of electric field E_3 at the strain S_m =0.1% for different temperatures.The simulation results show that the multifield not only induces new paraelectric phase but also higher dielectric constant.These findings present theoretical evidence that the multi fields and misfit strains can improve the thin film's physical properties.
Based on nonlinear thermodynamic theory,the a_1,c_2 and r_2 phases with the negative P_3component are introduced to describe the electric-generated phase transition of Ba_(0.5) Sr_(0.5) TiO_3(BST50) thin film,and the misfit strain-electric field phase diagrams and the electric field-polarization components curves under different temperatures are simulated for the single-domain state of a single grain of BST50 thin film grown on the cubic substrate.Furthermore,we calculated the dielectric constants as a function of electric field E_3 at the strain S_m =0.1% for different temperatures.The simulation results show that the multifield not only induces new paraelectric phase but also higher dielectric constant.These findings present theoretical evidence that the multi fields and misfit strains can improve the thin film's physical properties.
Based on nonlinear thermodynamic theory,the a_1,c_2 and r_2 phases with the negative P_3component are introduced to describe the electric-generated phase transition of Ba_(0.5) Sr_(0.5) TiO_3(BST50) thin film,and the misfit strain-electric field phase diagrams and the electric field-polarization components curves under different temperatures are simulated for the single-domain state of a single grain of BST50 thin film grown on the cubic substrate.Furthermore,we calculated the dielectric constants as a function of electric field E_3 at the strain S_m =0.1% for different temperatures.The simulation results show that the multifield not only induces new paraelectric phase but also higher dielectric constant.These findings present theoretical evidence that the multi fields and misfit strains can improve the thin film's physical properties.
引文