GaGdN;
nanorods;
molecular-beam epitaxy;
magnetic semiconductor;
MOLECULAR-BEAM EPITAXY;
CRYSTAL-GROWTH;
FERROMAGNETISM;
D O I:
10.1002/pssc.201000486
中图分类号:
TM [电工技术];
TN [电子技术、通信技术];
学科分类号:
0808 ;
0809 ;
摘要:
Diluted magnetic semiconductor GaGdN nanorods were grown on Si (001) substrates with native silicon oxides by molecular-beam epitaxy with radio frequency nitrogen plasma. The Gd cell temperature dependences of their structural and magnetic properties were systematically studied. It was found that higher Gd fluxes suppress the growth of nanorods along the c-direction and form GdN secondary phase. Magnetic measurement also revealed that nanorods of high content Gd showed small magnetization, indicating that GdN come to form and therefore the amount of Gd atoms substituted for Ga sites in GaGdN decreases. (C) 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
机构:
Key Laboratory of Information Photonics and Optical Communications of Ministry of Education, Beijing University of Posts and TelecommunicationsKey Laboratory of Information Photonics and Optical Communications of Ministry of Education, Beijing University of Posts and Telecommunications
机构:
Peking Univ, Dept Phys, Electron Microscopy Lab, Beijing 100871, Peoples R ChinaPeking Univ, Dept Phys, Electron Microscopy Lab, Beijing 100871, Peoples R China
Chang, YQ
Xu, XY
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机构:Peking Univ, Dept Phys, Electron Microscopy Lab, Beijing 100871, Peoples R China
Xu, XY
Luo, XH
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机构:Peking Univ, Dept Phys, Electron Microscopy Lab, Beijing 100871, Peoples R China
Luo, XH
Long, Y
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机构:Peking Univ, Dept Phys, Electron Microscopy Lab, Beijing 100871, Peoples R China
Long, Y
Ye, RC
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机构:Peking Univ, Dept Phys, Electron Microscopy Lab, Beijing 100871, Peoples R China