Transactions of the Materials Research Society of Japan
Online ISSN : 2188-1650
Print ISSN : 1382-3469
ISSN-L : 1382-3469
Regular Papers
Local Structure Analysis of BaTiO3 Modulated by Mn Substitution
Yasuhiro YonedaShinji KoharaYuji NoguchiMasaru Miyayama
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2015 Volume 40 Issue 1 Pages 29-32

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Abstract
Doping with manganese is one of several ways to confine the electrons to a small region. In Mn-doped BaTiO3 the phenomenon, which suggests reconstruction of ferroelectric domains, such as an aging effect, has been observed. The valence state of the substituted Mn was found to be +4 by using X-ray absorption fine structure measurements. We also performed high-energy synchrotron X-ray measurements and revealed that the coherence length of local structure increased with Mn substitution. This is a kind of phase transformation from a short-range order to long-range order type of ferroelectrics.
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© 2015 The Materials Research Society of Japan
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