Heat treatment effect on magnetic properties of polycrystalline Si1−xMnx semiconductors grown by MBE

MBE-grown polycrystalline Si1−xMnx semiconductors were aged at 700°C for various times, and heat treatment effect on the magnetic properties was studied. Extensive analyses on the magnetization characteristics and microstructure of polycrystalline Si1−xMnx semiconductors reveal that ferromagnetic Mn...

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Veröffentlicht in:	Journal of magnetism and magnetic materials 2004-11, Vol.282 (1), p.240-243
Hauptverfasser:	Kwon, Dhang, Kim, Han Kyum, Kim, Jong Hwan, Ihm, Young Eon, Kim, Dojin, Kim, Hyojin, Baek, Jong Sung, Kim, Chang Soo, Choo, Woong Kil
Format:	Artikel
Sprache:	eng
Schlagworte:	Condensed matter: electronic structure, electrical, magnetic, and optical properties Exact sciences and technology Magnetic phase Magnetic properties and materials Magnetic properties of monolayers and thin films Magnetic properties of surface, thin films and multilayers Magnetic semiconductor Magnetic semiconductors MnSi Physics Studies of specific magnetic materials
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Beschreibung
Zusammenfassung:	MBE-grown polycrystalline Si1−xMnx semiconductors were aged at 700°C for various times, and heat treatment effect on the magnetic properties was studied. Extensive analyses on the magnetization characteristics and microstructure of polycrystalline Si1−xMnx semiconductors reveal that ferromagnetic MnSi and anti-ferromagnetic Mn5Si3 phases are transformed into ferromagnetic Mn4Si7, nonmagnetic Mn5Si2, anti-ferromagnetic β-Mn and unidentified minor phases. The phase transformation causes the decrease of saturation magnetizations after heat treatment.
ISSN:	0304-8853
DOI:	10.1016/j.jmmm.2004.04.054