Copper-doped AlN polycrystalline powders: A class of room-temperature ferromagnetic materials期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Copper-doped AlN polycrystalline powders: A class of room-temperature ferromagnetic materials

Authors:	H Li XL Chen B Song WJ Wang

Affiliation:	^a Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, P.O. Box 603, Beijing 100190, China ^b College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China ^c Academy of Fundamental and Interdisciplinary Sciences, Harbin Institute of Technology, Harbin 150080, China

Abstract:	Cu-doped AlN polycrystalline samples were synthesized by a solid-state reaction. X-ray diffraction analysis revealed the hexagonal structure of the doped samples. Photoluminescence measurements reveal the substitution of Cu for Al in the AlN lattice. Clear hysteresis loops are observed in the M-H curves for the samples at 300 K, revealing room temperature ferromagnetism of the samples. Our experimental results verify that room temperature ferromagnetism is an intrinsic property of Cu-doped AlN.

Keywords:	A Diluted magnetic semiconductor D Room temperature ferromagnetism
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