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 (16)

• Magnetic effects at the interface between nonmagnetic oxides
• Ferromagnetism in semiconductors and oxides: prospects from a ten years' perspective
• Direct imaging of the coexistence of ferromagnetism and superconductivity at the LaAlO3/SrTiO3 interface
• High Temperature Ferromagnetism with Giant Magnetic Moment in Transparent Co-doped SnO2-d
• Coexistence of Magnetic Order and Two-dimensional Superconductivity at LaAlO${}_3$/SrTiO${}_3$ Interfaces
• Creation and control of a two-dimensional electron liquid at the bare SrTiO3 surface
• 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
• Tuning of dielectric properties and magnetism of SrTiO3 by site-specific doping of Mn
• Electron spin resonance investigation of Mn^{2+} ions and their dynamics in manganese doped SrTiO_3
• Sr and Mn co-doped LaCuSO: A wide band gap oxide diluted magnetic semiconductor with TC around 200K
• EPR studies of manganese centers in SrTiO3: Non-Kramers Mn3+ ions and spin-spin coupled Mn4+ dimers
• Magnetization in electron- and Mn- doped SrTiO3
• Mechanisms of magnetoelectricity in manganese doped incipient ferroelectrics

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