A Novel Electron Paramagnetic Resonance Phenomenon in a Barium Stronium Titanate Ceramic

Abstract:

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The electron paramagnetic resonance (EPR) technique was employed to investigate the point defects in barium strontium titanate ceramics. All samples showed a strong EPR signal with g = 2.000, which was indexed as intrinsic Ti-vacancy defects. In (Ba0.85Sr0.15)TiO3 ceramic, which showed a tetragonal symmetry and consisted of the crystallites with average size of ~ 220 nm, a novel EPR powder spectrum was observed - the g-factor of the g = 2.000 signal evolved into a g-tensor, and the two weak signals with g3 = ~ 2.6 and g1 = ~ 1.6 gradually shifted toward the g2 = 2.000 signal and approached to each other with increasing temperature.

Info:

Periodical:

Advanced Materials Research (Volumes 295-297)

Edited by:

Pengcheng Wang, Liqun Ai, Yungang Li, Xiaoming Sang and Jinglong Bu

Pages:

1050-1054

DOI:

10.4028/www.scientific.net/AMR.295-297.1050

Citation:

D. Y. Lu and X. Y. Sun, "A Novel Electron Paramagnetic Resonance Phenomenon in a Barium Stronium Titanate Ceramic", Advanced Materials Research, Vols. 295-297, pp. 1050-1054, 2011

Online since:

July 2011

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$35.00

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