Intrinsic paramagnetism and aggregation of manganese dopants in SrTiO$_3$

Andrej Zorko; Matej Pregelj; Hubertus Luetkens; Anna-Karin Axelsson; Matjaz Valant

doi:10.1103/PhysRevB.89.094418

Intrinsic paramagnetism and aggregation of manganese dopants in SrTiO$_3$

Strongly Correlated Electrons 2014-03-25 v2 Materials Science

Authors: Andrej Zorko , Matej Pregelj , Hubertus Luetkens , Anna-Karin Axelsson , Matjaz Valant

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Abstract

Using local-probe magnetic-characterization techniques of muon spin relaxation ( $\mu$ SR) and electron spin resonance (ESR) we have investigated the Mn-induced magnetism of the wide-bandgap perovskite SrTiO $_3$ . Our results clearly demonstrate that this diluted magnetic oxide (DMO) remains paramagnetic down to low temperatures for both doping cases, i.e., when Mn substitutes for Sr or Ti. In addition, both experimental techniques have unveiled that the distribution of individual Mn $^{2+}$ and Mn $^{4+}$ ions is nonrandom, as these ions partially aggregate into nanosized clusters.

Keywords

diluted magnetic oxides manganese doping srtio3 paramagnetism muon spin relaxation electron spin resonance ion aggregation

Cite

@article{arxiv.1401.0607,
  title  = {Intrinsic paramagnetism and aggregation of manganese dopants in SrTiO$_3$},
  author = {Andrej Zorko and Matej Pregelj and Hubertus Luetkens and Anna-Karin Axelsson and Matjaz Valant},
  journal= {arXiv preprint arXiv:1401.0607},
  year   = {2014}
}

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a few minor changes were made

Intrinsic paramagnetism and aggregation of manganese dopants in SrTiO$_3$

Abstract

Keywords

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