Electron paramagnetic resonance (EPR) and static magnetization data on manganese substituted (up to 3 mol%) strontium tintanate (Mn:SrTiO3) samples are presented. Four EPR signals are observed from different Mn4+ and Mn2+ sites. The behavior of their intensity vs. temperature is discussed. It suggests the presence of antiferromagnetic interactions in heavily Mn doped grain boundaries. X-ray diffraction analysis shows two coexisting perovskite-type phases, whose abundance depends on the Mn content. (C) 2000 Elsevier Science Ltd. All rights reserved.
Azzoni, C., Mozzati, M., Paleari, A., Massarotti, V., Bini, M., Capsoni, D. (2000). Magnetic evidence of different environments of manganese ions in Mn-substituted strontium titanate. SOLID STATE COMMUNICATIONS, 114(12), 617-622 [10.1016/S0038-1098(00)00121-6].
Magnetic evidence of different environments of manganese ions in Mn-substituted strontium titanate
PALEARI, ALBERTO MARIA FELICE;
2000
Abstract
Electron paramagnetic resonance (EPR) and static magnetization data on manganese substituted (up to 3 mol%) strontium tintanate (Mn:SrTiO3) samples are presented. Four EPR signals are observed from different Mn4+ and Mn2+ sites. The behavior of their intensity vs. temperature is discussed. It suggests the presence of antiferromagnetic interactions in heavily Mn doped grain boundaries. X-ray diffraction analysis shows two coexisting perovskite-type phases, whose abundance depends on the Mn content. (C) 2000 Elsevier Science Ltd. All rights reserved.
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