Ferromagnetic phenomenon revealed in the chalcopyrite semiconductor CdGeP2:Mn

Autor:	Takayuki Ishibashi, Youichi Hasegawa, Takao Nishi, Ryuji Misawa, G A Medvedkin, Kanta Hirose, Katsuaki Sato
Rok vydání:	2001
Předmět:	Crystal Materials science Magnetic domain Condensed matter physics Analytical chemistry General Physics and Astronomy Curie temperature Magnetic semiconductor Crystallite Magnetic force microscope Magnetic hysteresis Single crystal
Zdroj:	Journal of Applied Physics. 89:7027-7029
ISSN:	1089-7550 0021-8979
DOI:	10.1063/1.1357842
Popis:	High concentration of Mn atoms has been successfully incorporated into the chalcopyrite type II–IV–V2 semiconductor CdGeP2 by solid-state reaction technique without causing any structural changes. Polycrystalline powder of the chalcopyrite-related material in Cd–Mn–Ge–P quaternary system has been additionally synthesized by sintering technology. Well-defined M–H hysteresis loops were observed at room temperature in CdGeP2:Mn single crystal and polycrystalline powder samples grown independently. The Curie temperature has been determined to be 320 K for single crystal phase CdxMn1−xGeP2 and 310 K for the polycrystalline powder. Magnetic force microscopy (MFM) observation clearly showed a stripe domain pattern on the Mn-diffused surface of CdGeP2 single crystal. The magneto-optical Kerr ellipticity spectrum of CdGeP2:Mn crystal showed a peak around 1.75 eV at T=300 K.
Databáze:	OpenAIRE
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