High Temperature Ferromagnetism with Giant Magnetic Moment in Transparent Co-doped SnO2-d
S. B. Ogale, R. J. Choudhary, J. P. Buban, S. E. Lofland, S. R., Shinde, S. N. Kale, V. N. Kulkarni, J. Higgins, C. Lanci, J. R. Simpson, N., D. Browning, S. Das Sarma, H. D. Drew, R. L. Greene, T. Venkatesan
TL;DR
This paper reports room temperature ferromagnetism with a giant magnetic moment in Co-doped SnO2 thin films, which are semiconducting and transparent, marking a significant advancement in diluted magnetic semiconductors.
Contribution
It demonstrates for the first time ferromagnetism with a giant magnetic moment in Co-doped SnO2 thin films at room temperature.
Findings
Ferromagnetism with Curie temperature near 650 K.
Giant magnetic moment of about 7 Bohr-Magneton per Co.
Films are semiconducting and highly transparent.
Abstract
Occurrence of room temperature ferromagnetism is demonstrated in pulsed laser deposited thin films of Sn1-xCoxO2-d (x<0.3). Interestingly, films of Sn0.95Co0.05O2-d grown on R-plane sapphire not only exhibit ferromagnetism with a Curie temperature close to 650 K, but also a giant magnetic moment of about 7 Bohr-Magneton/Co, not yet reported in any diluted magnetic semiconductor system. The films are semiconducting and optically highly transparent.
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