报告题目(中文):交流极化频率对PMN-PT单晶铁电畴结构影响
报告题目(英文):Domain Engineering Effect of Alternating Current Poling with Different Frequency on PMN-0.3PT Single Crystals
报告内容简介:The alternating current (electric field) poling (ACP) was applied on [001]-oriented 0.7Pb(Mg1/3Nb2/3)O3- 0.3PbTiO3(PMN-0.3PT) single crystal samples with dimensions of 5-mm-thick k33mode and the influence of ACP frequency (fACP) was studied. Compared to those from traditional direct (electric field) poling (DCP) samples, d33and εT33/ε0) of ACP samples could gain up to 67% increase to 3200 pC/N and 10500, respectively. In this work, low fACPis preferred for better enhancement. The ACP dynamics and the corresponding domain engineering effect during the saturation process were studied by both P-E loops and phase-field simulation.
报告人姓名:罗骋韬
报告人简介(中文):弛豫铁电单晶的交流极化研究
报告人简介(英文):对[001]取向的0.7Pb(Mg1/3Nb2/3)O3-0.3PbTiO3(PMN-0.3PT)单晶样品进行了交流(电场)极化(ACP),研究了ACP频率(fACP)的影响。与传统的直接(电场)极化(DCP)样品相比,d33和εT33型/ε0)时,可提高67%,分别达到3200pc/N和10500 。在这项工作中,低fACP是更好的增强首选。通过P-E环和相场模拟研究了ACP在饱和过程中的动力学行为及相应的畴工程效应。
报告人单位(中文):上海交通大学
报告人单位(英文):Shanghai Jiaotong University
报告时间:2021-05-26 09:30
报告地点:材料A楼 503室
主办单位:bg大游官网官方平台
联系人:陈建国