High temperature ferromagnetism with a giant magnetic moment in transparent co-doped SnO(2-delta).
/ Authors
S. Ogale, R. Choudhary, J. Buban, S. Lofland, S. Shinde, S. Kale, V. N. Kulkarni, J. Higgins, C. Lanci, J. Simpson
and 5 more authors
N. Browning, S. Das Sarma, H. Drew, R. L. Greene, T. Venkatesan
/ 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.
Journal: Physical review letters