High temperature ferromagnetism with a giant magnetic moment in transparent co-doped SnO(2-delta)

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

doi:10.1103/PhysRevLett.91.077205

High temperature ferromagnetism with a giant magnetic moment in transparent co-doped SnO(2-delta)

Phys Rev Lett. 2003 Aug 15;91(7):077205. doi: 10.1103/PhysRevLett.91.077205. Epub 2003 Aug 15.

Authors

S B Ogale¹, 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

Affiliation

¹ Center for Superconductivity Research, Department of Physics, University of Maryland, College Park, MD 20742-4111, USA.

PMID: 12935053
DOI: 10.1103/PhysRevLett.91.077205

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.