Ogale SB, Choudhary RJ, Buban JP, Lofland SE, Shinde SR, Kale SN, Kulkarni VN, Higgins J, Lanci C, Simpson JR, Browning ND, Das Sarma S, Drew HD, Greene RL, Venkatesan T. High temperature ferromagnetism with a giant magnetic moment in transparent co-doped SnO(2-delta).
PHYSICAL REVIEW LETTERS 2003;
91:077205. [PMID:
12935053 DOI:
10.1103/physrevlett.91.077205]
[Citation(s) in RCA: 61] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2003] [Indexed: 05/24/2023]
Abstract
The occurrence of room temperature ferromagnetism is demonstrated in pulsed laser deposited thin films of Sn(1-x)Co(x)O(2-delta) (x<0.3). Interestingly, films of Sn(0.95)Co(0.05)O(2-delta) grown on R-plane sapphire not only exhibit ferromagnetism with a Curie temperature close to 650 K, but also a giant magnetic moment of 7.5+/-0.5 micro(B)/Co, not yet reported in any diluted magnetic semiconductor system. The films are semiconducting and optically highly transparent.
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