Magneto-optical properties of ZnO-based diluted magnetic semiconductors

K. Ando, H. Saito, Zhengwu Jin, T. Fukumura, M. Kawasaki, Y. Matsumoto, H. Koinuma

Research output: Contribution to journalConference articlepeer-review

285 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)7284-7286
Number of pages3
JournalJournal of Applied Physics
Volume89
Issue number11 II
DOIs
Publication statusPublished - 2001 Jun 1
Externally publishedYes
Event8th Joint Magnetism and Magnetic Materials-Intermag Conference - San Antonio, TX, United States
Duration: 2001 Jan 72001 Jan 11

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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