Room-temperature ferromagnetism in a II-VI diluted magnetic semiconductor Zn(1-x)Cr(x)Te |
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| Authors: | Saito H Zayets V Yamagata S Ando K |
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| Affiliation: | NanoElectronics Research Institute, AIST, Tsukuba Central 2, Umezono 1-1-1, Tsukuba Ibaraki 305-8568, Japan. h-saitoh@aist.go.jp |
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| Abstract: | The magnetic and magneto-optical properties of a Cr-doped II-VI semiconductor ZnTe were investigated. Magnetic circular dichroism measurements showed a strong interaction between the sp carriers and localized d spins, indicating that Zn(1-x)Cr(x)Te is a diluted magnetic semiconductor. The Curie temperature of the film with x=0.20 was estimated to be 300+/-10 K, which is the highest value ever reported for a diluted magnetic semiconductor in which sp-d interactions were confirmed. In spite of its high Curie temperature, Zn(1-x)Cr(x)Te film shows semiconducting electrical transport properties. |
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