High curie temperatures in ferromagnetic Cr-doped AlN thin films

被引：127
作者：
Kumar, D
Antifakos, J
Blamire, MG
Barber, ZH
机构：
[1] Univ Cambridge, Dept Mat Sci & Met, Cambridge CB2 3QZ, England
[2] Kurukshetra Univ, Dept Elect Sci, Kurukshetra 136119, Haryana, India
来源：
APPLIED PHYSICS LETTERS | 2004年 / 84卷 / 24期
关键词：
D O I：
10.1063/1.1763216
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Al1-xCrxN thin films with 0.02less than or equal toxless than or equal to0.1 were deposited by reactive co-sputtering onto c-plane (001) sapphire. Room-temperature ferromagnetism with a coercive field of 85 Oe was observed in samples with chromium contents as low as x=0.027 (2.7%). With increasing Cr content the mean magnetic moment is strongly suppressed, with a maximum saturation moment of 0.62 and 0.71 mu(B) per Cr atom at 300 and 50 K, respectively. We show that the Curie temperature of Al1-xCrxN for x=0.027 is greater than 900 K. (C) 2004 American Institute of Physics.
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页码：5004 / 5006
页数：3
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