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Co-doped LaLa1-xSrxTiO3-d : A Diluted Magnetic Oxide System with High Curie Temperature

Y. G. Zhao·S. R. Shinde·S. B. Ogale·J. Higgins·S. E. Lofland·C. Lanci·J. P. Buban·N. D. Browning·S. Das Sarma·A. J. Millis·V. N. Kulkarni·R. J. Choudhary·R. L. Greene·T. Venkatesan
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Abstract

Ferromagnetism is observed at and above room temperature in pulsed laser deposited epitaxial films of Co-doped Ti-based oxide perovskite (La1-xSrxTiO3-d). The system has the characteristics of an intrinsic diluted magnetic semiconductor (metal) at low concentrations (<~ 2 %), but develops inhomogeneity at higher cobalt concentrations. The films range from being opaque metallic to transparent semiconducting depending on the oxygen pressure during growth and are yet ferromagnetic.

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Y. G. Zhao, S. R. Shinde, S. B. Ogale, J. Higgins, S. E. Lofland, C. Lanci, J. P. Buban, N. D. Browning, S. Das Sarma, A. J. Millis, V. N. Kulkarni, R. J. Choudhary, R. L. Greene, T. Venkatesan. 2003-07-31. Co-doped LaLa1-xSrxTiO3-d : A Diluted Magnetic Oxide System with High Curie Temperature. https://doi.org/10.1063/1.1610796

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