Ferromagnetic order in Ge1−xCrxTe
作者： Y. Fukuma , H. Asada , T. Koyanagi
DOI: 10.1063/1.2166702
关键词: Materials science 、 Spontaneous magnetization 、 RKKY interaction 、 Ferromagnetism 、 Superexchange 、 Ferromagnetic material properties 、 Magnetic semiconductor 、 Curie temperature 、 Sputtering 、 Condensed matter physics
摘要: The ferromagnetic properties of IV-VI diluted magnetic semiconductor Ge1−xCrxTe films prepared by sputtering are investigated. ferromagnetism such as the spontaneous magnetization and Curie temperature is significantly affected stoichiometry, while Ge1−xMnxTe was hardly defects depended strongly on hole concentration [Y. Fukuma, H. Asada, N. Nishimura, T. Koyanagui, J. Appl. Phys. 93, 4034 (2003)]. difference could be ascribed to interaction order: short-range order a superexchange mechanism plays more an important role than long-range Ruderman-Kittel-Kasuya-Yosida in films.
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