Interface-induced magnetic coupling in multiferroic/ferromagnetic bilayer: An ultrafast pump-probe study

被引：7

作者：

La-o-Vorakiat, C. ^{[1
]}

Tian, Y. ^{[1
]}

Wu, T. ^{[1
]}

Panagopoulos, C. ^{[1
]}

Zhu, J-X ^{[2
,3
]}

Su, Haibin ^{[4
]}

Chia, Elbert E. M. ^{[1
]}

机构：

[1] Nanyang Technol Univ, Sch Phys & Math Sci, Div Phys & Appl Phys, Singapore 637371, Singapore

[2] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA

[3] Los Alamos Natl Lab, Ctr Integrated Nanotechnol, Los Alamos, NM 87545 USA

[4] Nanyang Technol Univ, Sch Mat Sci & Engn, Singapore 639798, Singapore

来源：

APPLIED PHYSICS LETTERS | 2014年 / 104卷 / 14期

关键词：

EXCHANGE BIAS; FERROELECTRICITY;

D O I：

10.1063/1.4870580

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

By use of optical pump-probe measurement, we study the relaxation dynamics of a multiferroic-ferromagnetic TbMnO3/La0.7Sr0.3MnO3 bilayer. The relaxation dynamics of both layers are well separated in time allowing us to investigate the magnetic coupling across the bilayer. We observe that the relaxation dynamics of the individual layers in the bilayer sample are the result of the interplay between the intrinsic magnetic order and the induced interfacial effect. Our data suggest the existence of induced ferromagnetic order in the TbMnO3 layer and antiferromagnetic order in the La0.7Sr0.3MnO3 layer. (C) 2014 AIP Publishing LLC.

引用

页数：5

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