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Magnetization in electron- and Mn- doped SrTiO3

Choudhury, D and Pal, B and Sharma, A and Bhat, SV and Sarma, DD (2013) Magnetization in electron- and Mn- doped SrTiO3. In: Scientific Reports, 3 . 1433_1-1433_4.

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Official URL: http://dx.doi.org/10.1038/srep01433

Abstract

Mn- doped SrTiO3.0, 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 SrTiO3 via oxygen vacancies, thereby forming SrTi1-xMnxO3-delta, 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 SrTiO3 system.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Nature Publishing Group.
Keywords: Semiconductors; Spintronics; Ferromagnetism
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Division of Physical & Mathematical Sciences > Physics
Depositing User: Francis Jayakanth
Date Deposited: 10 Apr 2013 07:12
Last Modified: 10 Apr 2013 07:12
URI: http://eprints.iisc.ac.in/id/eprint/46306

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