Spin and Valence States of Manganese Ions in Mn-Doped BaTiO3 Ceramics by Electron Paramagnetic Resonance

Abstract:

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A number of paramagnetic defects and defect complexes in BaTiO3 have been detected by the Electron Paramagnetic Resonance (EPR) technique. The signal intensity, the g factors and the hyperfine splitting constants A of Mn2+ at the different temperatures were distributed with temperatures in a U-shape. In this paper, a new direct evidence for the presence of manganese with an electron spin of S=5/2 (Mn2+) in all four phases (R, O, T and C) and the high spin state of the electron configuration in MnTi² at the high temperature cubic phase is presented by EPR method in La-Mn codoped BaTiO3 PTCR ceramics.

Info:

Periodical:

Key Engineering Materials (Volumes 280-283)

Edited by:

Wei Pan, Jianghong Gong, Chang-Chun Ge and Jing-Feng Li

Pages:

373-376

DOI:

10.4028/www.scientific.net/KEM.280-283.373

Citation:

Z. G. Zhou et al., "Spin and Valence States of Manganese Ions in Mn-Doped BaTiO3 Ceramics by Electron Paramagnetic Resonance", Key Engineering Materials, Vols. 280-283, pp. 373-376, 2005

Online since:

February 2007

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Price:

$35.00

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