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arXiv · 1310.1461

Magnetization in electron- and Mn- doped SrTiO3

D. Choudhury·B. Pal·A. Sharma·S. V. Bhat·D. D. Sarma
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Abstract

Mn-doped SrTiO_3.0, when synthesized free of impurities, is a paramagnetic insulator with interesting dielectric properties. Since delocalized charge carriers are known to promote ferromagnetism in a large number of systems via diverse mechanisms, we have looked for the possibility of any intrinsic, spontaneous magnetization by simultaneous doping of Mn ions and electrons into SrTiO_3 via oxygen vacancies, thereby forming SrTi_(1-x)Mn_xO_(3-d), to the extent of making the doped system metallic. We find an absence of any enhancement of the magnetization in the metallic sample when compared with a similarly prepared Mn doped, however, insulating sample. Our results, thus, are not in agreement with a recent observation of a weak ferromagnetism in metallic Mn doped SrTiO_3 system.

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D. Choudhury, B. Pal, A. Sharma, S. V. Bhat, D. D. Sarma. 2013-10-05. Magnetization in electron- and Mn- doped SrTiO3. https://doi.org/10.1038/srep01433

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