Magnetic evidence of different environments of manganese ions in Mn-substituted strontium titanate

Authors
Azzoni, CB Mozzati, MC Paleari, A Massarotti, V Bini, M Capsoni, D
Citation
Cb. Azzoni et al., Magnetic evidence of different environments of manganese ions in Mn-substituted strontium titanate, SOL ST COMM, 114(12), 2000, pp. 617-622
Citations number
17
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
SOLID STATE COMMUNICATIONS
ISSN journal
00381098 → ACNP
Volume
114
Issue
12
Year of publication
2000
Pages
617 - 622
Database
ISI
SICI code
0038-1098(2000)114:12<617:MEODEO>2.0.ZU;2-5
Abstract
Electron paramagnetic resonance (EPR) and static magnetization data on mang anese substituted (up to 3 mol%) strontium tintanate (Mn:SrTiO3) samples ar e presented. Four EPR signals are observed from different Mn4+ and Mn2+ sit es. The behavior of their intensity vs. temperature is discussed. It sugges ts the presence of antiferromagnetic interactions in heavily Mn doped grain boundaries. X-ray diffraction analysis shows two coexisting perovskite-typ e phases, whose abundance depends on the Mn content. (C) 2000 Elsevier Scie nce Ltd. All rights reserved.