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Intrinsic paramagnetism and aggregation of manganese dopants in SrTiO_3

机译:SrTiO_3中本征顺磁性和锰掺杂物的聚集

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摘要

Using local-probe magnetic-characterization techniques of muon spin relaxation and electron spin resonance we have investigated the Mn-induced magnetism of the wide-band-gap perovskite SrTiCV Our results clearly demonstrate that this diluted magnetic oxide 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 revealed that the distribution of individual Mn~(2+) and Mn~(4+) ions is nonrandom, as these ions partially aggregate into nanosized clusters.
机译:使用介子自旋弛豫和电子自旋共振的局部探针磁表征技术,我们研究了宽带隙钙钛矿SrTiCV的Mn诱导的磁性。我们的结果清楚地表明,这种稀释的磁性氧化物在低温下均保持顺磁性。掺杂情况,即当Mn替代Sr或Ti时。此外,两种实验技术均表明,单个Mn〜(2+)和Mn〜(4+)离子的分布是非随机的,因为这些离子部分聚集为纳米簇。

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