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

doi:10.1063/1.1610796

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

Strongly Correlated Electrons 2009-11-07 v3

Authors: 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.

Keywords

ferromagnetism diluted magnetic semiconductor perovskite oxide room temperature thin film

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@article{arxiv.cond-mat/0209267,
  title  = {Co-doped LaLa1-xSrxTiO3-d : A Diluted Magnetic Oxide System with High Curie Temperature},
  author = {Y. G. Zhao and S. R. Shinde and S. B. Ogale and J. Higgins and S. E. Lofland and C. Lanci and J. P. Buban and N. D. Browning and S. Das Sarma and A. J. Millis and V. N. Kulkarni and R. J. Choudhary and R. L. Greene and T. Venkatesan},
  journal= {arXiv preprint arXiv:cond-mat/0209267},
  year   = {2009}
}

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To be appeared in Appl. Phys. Lett

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

Abstract

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