Uniaxial stress-induced ferroelectric depolarization in -oriented 0.72Pb(Mg1/3Nb2/3)O3-0.28PbTiO3 single crystal
Uniaxial stress-induced ferroelectric depolarization in -oriented 0.72Pb(Mg1/3Nb2/3)O3-0.28PbTiO3 single crystal
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DOI：
10.1016/j.jallcom.2015.05.130
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发表时间：
2015-10
影响因子：
6.2
通讯作者：
A'Xi Xue;Cong Fang;C. Wang;Zheng Wu;Yanmin Jia;Yongsheng Liu;Haosu Luo
中科院分区：
文献类型：
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作者：
A'Xi Xue;Cong Fang;C. Wang;Zheng Wu;Yanmin Jia;Yongsheng Liu;Haosu Luo
实验和理论研究发现，单轴压应力（σ）可使α<001>-取向0.72Pb（Mg_（1/3）Nb_（2/3））O_3 - 0.28PbTiO_3晶体的铁电回复极化（Pr）和矫顽场（Ec）均下降。在50 °C下，随着σ从0增加到−15 MPa，Pr从20.69 μC/cm 2减小到17.30 μC/cm 2，Ec从2.19 kV/cm减小到1.89 kV/cm。基于唯象Landau-Khalatnikov理论的数值模拟被用来绘制σ下的极化磁滞回线。数值模拟结果与实验观测结果吻合较好。该研究对铁电器件在应变工程中的应用具有一定的参考价值。
It is experimentally and theoretically found that the uniaxial compressive stress (σ) can lead to the decrease of both the ferroelectric remanent polarization (Pr) and the coercive field (Ec) of <001>-oriented 0.72Pb(Mg1/3Nb2/3)O3-0.28PbTiO3crystal. With the increase ofσfrom 0 to −15 MPa at 50 °C,Prdecreases from 20.69 μC/cm2to 17.30 μC/cm2andEcdecreases from 2.19 kV/cm to 1.89 kV/cm, respectively. A numerical simulation based on a phenomenological Landau-Khalatnikov theory is used to plot the polarization hysteresis loop underσ. The result of numerical simulation agrees with the experimental observation very well. The research is useful for the application of ferroelectric devices in strain engineering.