Frequency dependent dynamical electromechanical response of mixed ionic-electronic conductors
Frequency dependent dynamical electromechanical response of mixed ionic-electronic conductors
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DOI：
10.1063/1.3673868
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发表时间：
2011-12
影响因子：
3.2
通讯作者：
A. Morozovska;E. Eliseev;S. Bravina;F. Ciucci;G. Svechnikov;Long-qing Chen;Sergei V. Kalinin
中科院分区：
文献类型：
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作者：
A. Morozovska;E. Eliseev;S. Bravina;F. Ciucci;G. Svechnikov;Long-qing Chen;Sergei V. Kalinin
在不同的电子和离子边界条件下，分析了混合离子-电子导体薄膜对周期性电偏压的频率依赖性动态机电响应。讨论了移动的离子浓度（化学计量贡献）、受体（供体）的电荷状态、电子浓度（通过形变势的电子-声子耦合）和挠曲电效应贡献的动力学效应。计算了混合电子离子导体（MIEC）薄膜的各种可能的非线性动态机电响应，包括准椭圆曲线、具有明显记忆窗口的非对称类椭圆环和类蝴蝶曲线。离子半导体的机电响应被预测为局部价态，能带结构和电子-声子相关性的一个强大的描述符，可以很容易地测量在纳米尺度的体积，并在存在强的电子导电性。V C 2012美国
Frequency dependent dynamic electromechanical response of the mixed ionic-electronic conductor film to a periodic electric bias is analyzed for different electronic and ionic boundary conditions. Dynamic effects of mobile ions concentration (stoichiometry contribution), charge state of acceptors (donors), electron concentration (electron-phonon coupling via the deformation potential), and flexoelectric effect contribution are discussed. A variety of possible nonlinear dynamic electromechanical responses of mixed electronic ionic conductors (MIEC) films including quasi-elliptic curves, asymmetric hysteresis-like loops with pronounced memory window, and butterfly-like curves are calculated. The electromechanical response of ionic semiconductor is predicted to be a powerful descriptor of local valence states, band structure and electron-phonon correlations that can be readily measured in the nanoscale volumes and in the presence of strong electronic conductivity. V C 2012 American