TY - JOUR
T1 - Magneto-optical properties of ZnO-based diluted magnetic semiconductors
AU - Ando, K.
AU - Saito, H.
AU - Jin, Zhengwu
AU - Fukumura, T.
AU - Kawasaki, M.
AU - Matsumoto, Y.
AU - Koinuma, H.
PY - 2001/6/1
Y1 - 2001/6/1
N2 - Magnetic circular dichroism (MCD) spectra of Zn1 - xTMxO (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 Zn1 - xSCxO, Zn1 - xTixO, Zn1 - xVxO, and Zn1 - xCrxO. On the contrary, Zn1 - xMnxO, Zn1 - xCoxO, Zn1 - xNixO, and Zn1 - xCuxO 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.
AB - Magnetic circular dichroism (MCD) spectra of Zn1 - xTMxO (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 Zn1 - xSCxO, Zn1 - xTixO, Zn1 - xVxO, and Zn1 - xCrxO. On the contrary, Zn1 - xMnxO, Zn1 - xCoxO, Zn1 - xNixO, and Zn1 - xCuxO 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.
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U2 - 10.1063/1.1356035
DO - 10.1063/1.1356035
M3 - Conference article
AN - SCOPUS:0035356408
SN - 0021-8979
VL - 89
SP - 7284
EP - 7286
JO - Journal of Applied Physics
JF - Journal of Applied Physics
IS - 11 II
T2 - 8th Joint Magnetism and Magnetic Materials-Intermag Conference
Y2 - 7 January 2001 through 11 January 2001
ER -