High curie temperatures in ferromagnetic Cr-doped AlN thin films

被引：128

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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