Room-temperature ferromagnetism in the Co-doped Ba0.5Sr0.5TiO3 thin films

被引：30

作者：

Luo, L. B. ^{[1
]}

Zhao, Y. G. ^{[1
]}

Tian, H. F. ^{[1
]}

Yang, J. J. ^{[1
]}

Zhang, H. Y. ^{[1
]}

Li, J. Q. ^{[2
]}

Ding, J. J. ^{[3
]}

He, B. ^{[3
]}

Wei, S. Q. ^{[3
]}

Gao, C. ^{[3
]}

机构：

[1] Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China

[2] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100080, Peoples R China

[3] Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Hefei 230029, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 23期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1063/1.2945282

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The authors report the room-temperature ferromagnetism in the epitaxial thin films of 3% Co-doped Ba0.5Sr0.5TiO3 (CBSTO) grown by pulsed laser deposition. These films show the single phase character with Co dopants in the +2 state. More interestingly, ferromagnetic and ferroelectric transitions were observed at 570 and 150 K, respectively. The CBSTO films also show the exchange bias effect manifested by the negative shift and training effect of the hysteresis loops at 5 K. This work demonstrates that ferromagnetism can be induced in the ferroelectric materials, which is significant for shedding light on the mechanism of dopant induced ferromagnetism in insulators and applications. (C) 2008 American Institute of Physics.

引用

页数：3

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