您现在的位置:首页 > 学科建设 > 学术活动

学术报告:New application of composite magnetoelectric effects in condensed matter physics

日期: 2017-11-09     阅读次数:13

报告主题:New application of composite magnetoelectric effects in condensed matter physics

人:柴一晟 教授 重庆大学物理学院 

报告时间:1113日上午1000

报告地点:物理科技楼237

报告摘要:
   The magnetoelectric (ME) effect, the induction of either electric polarization (P) by a magnetic field (H) or magnetization (M) by an electric field (E). Toward this end, the magnetoelectric composite, wherein magnetostrictive and piezoelectric phases generate a sizable ME effect via strain coupling, have been extensively studied both theoretically and experimentally. The reason for this extensive study is that the composite generally exhibits a much higher ME voltage coefficient αE=δE/δH at room temperature than that of single-phase counterparts. Such high sensitivity holds great potential for many device applications such as energy harvesters, field sensors, gyrators, and transducers. However, very few people make use of this ME effect as a probe for the study of more fundamental aspects in condensed matter physics.

In this talk, I will show how the present experimental and theoretical understanding of composite ME effect can facilitate the researches of various phenomena in condensed matter physics. In particular, I will present four examples:

1. Utilizing ME effects to measure the angle dependent magnetostriction in the pulse high magnetic field.

2. Utilizing ME effects to measure the fermi surface topology.

3. Utilizing ME effects to probe the bulk magnetic skyrmion lattice and liquid phases in MnSi.

4. Utilizing ME effects to probe the vortex dynamic in type-II superconductor.

 报告人简介: 柴一晟。2007年于中国科技大学获得物理学博士,2007-2012年在韩国国立首尔大学物理系从博士后研究。2012-2017年以副研究员(所级百人)在中国科学院物理研究所磁学实验室工作。2017年加入重庆大学物理学院。研究方向为复合及单相多铁性材料磁电耦合效应研究。近几年来,以第一作者及通信作者在Nature Communication,Physical Review Letters等期刊发表多篇论文。



返回


phyedu.suda.edu.cn | 苏州大学物理与光电•能源学部 物理科学与技术学院

Copyright © 苏州大学 2015, All Rights Reserved 苏州市十梓街1号

苏ICP备-002103