Ogale S B, Choudhary R J, Buban J P, Lofland S E, Shinde S R, Kale S N, Kulkarni V N, Higgins J, Lanci C, Simpson J R, Browning N D, Das Sarma S, Drew H D, Greene R L, Venkatesan T
Center for Superconductivity Research, Department of Physics, University of Maryland, College Park, MD 20742-4111, USA.
Phys Rev Lett. 2003 Aug 15;91(7):077205. doi: 10.1103/PhysRevLett.91.077205.
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.
在脉冲激光沉积的Sn(1-x)Co(x)O(2-δ)（x<0.3）薄膜中证实了室温铁磁性的存在。有趣的是，在R面蓝宝石上生长的Sn(0.95)Co(0.05)O(2-δ)薄膜不仅表现出居里温度接近650K的铁磁性，还具有7.5±0.5微玻尔磁子/Co的巨磁矩，这在任何稀释磁性半导体系统中都尚未报道。这些薄膜是半导体且具有高光学透明度。
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