Magneto-optical properties of ZnO-based diluted magnetic semiconductors
Journal Article
·
· Journal of Applied Physics
Magnetic circular dichroism (MCD) spectra of Zn{sub 1{minus}x}TM{sub x}O (TM=Sc, Ti, V, Cr, Mn, Co, Ni, and Cu) films were measured to clarify their magneto-optical properties. Noticeable magneto-optical effect was not observed for Zn{sub 1{minus}x}Sc{sub x}O, Zn{sub 1{minus}x}Ti{sub x}O, Zn{sub 1{minus}x}V{sub x}O, and Zn{sub 1{minus}x}Cr{sub x}O. On the contrary, Zn{sub 1{minus}x}Mn{sub x}O, Zn{sub 1{minus}x}Co{sub x}O, Zn{sub 1{minus}x}Ni{sub x}O, and Zn{sub 1{minus}x}Cu{sub x}O showed pronounced negative MCD peaks near 3.4 eV which correspond to the band gap of the host ZnO semiconductor. These results show that ZnO alloyed with Mn, Co, Ni, and Cu is a diluted magnetic semiconductor with strong exchange interaction between sp-band carriers and localized d electrons. {copyright} 2001 American Institute of Physics.
- Sponsoring Organization:
- (US)
- OSTI ID:
- 40204031
- Journal Information:
- Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 11 Vol. 89; ISSN 0021-8979
- Publisher:
- The American Physical Society
- Country of Publication:
- United States
- Language:
- English
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