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

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.

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References in corpus (7)

• Magnetic effects at the interface between nonmagnetic oxides
• Origin and control of high-temperature ferromagnetism in semiconductors
• Sources of experimental errors in the observation of nanoscale magnetism
• Electron Correlation in Oxygen Vacancy in SrTiO${}_3$
• Controlled aggregation of magnetic ions in a semiconductor. Experimental demonstration
• Electron spin resonance investigation of Mn^{2+} ions and their dynamics in manganese doped SrTiO_3
• Magnetization in electron- and Mn- doped SrTiO3

Cited by in corpus (2)

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