Ferromagnetism in transparent thin films of Fe-doped indium tin oxide

被引：50
|
作者：
Ohno, Takahiro [1 ]
Kawahara, Toshio
Tanaka, Hidekazu
Kawai, Tomoji
Oku, Masaoki
Okada, Koichi
Kohiki, Shigemi
机构：
[1] Osaka Univ, Inst Sci & Ind Res, Osaka 5670047, Japan
[2] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan
[3] Kyushu Inst Technol, Dept Mat Sci, Fukuoka 8048550, Japan
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS | 2006年 / 45卷 / 33-36期
关键词：
Fe-doped ITO; ITO; thin film; PLD; ferromagnetism; Fe2O3; cluster;
D O I：
10.1143/JJAP.45.L957
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Transparent films of Fe-doped indium tin oxide (ITO) were grown at oxygen pressures of 5, 1, 10(-1), 10(-2), and 10(-3) Pa on yttria-stabilized zirconia (001) substrates by a pulsed-laser deposition method. We observed X-ray diffraction peaks from (00h) planes of In2O3 crystalline phase for the films. The films grown at 5 and 1 Pa were paramagnetic and semiconducting, that at 10(-1) Pa was ferromagnetic and semiconducting, and those at 10(-2) and 10(-3) Pa were ferromagnetic and metallic. The Fe-ITO films grown below 10(-1) Pa exhibited room-temperature (RT) ferromagnetism. Nanoscale Fe clusters in the highest oxidation state such as y-Fe2O3 resulted in the RT ferromagnetism.
引用
收藏
页码：L957 / L959
页数：3
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