Doping effect on ferroelectric microstructure in YMn1-xTi xO3

S. Mori, J. Tokunaga, Y. Horibe, T. Asada, Y. Koyama, T. Katsufuji

研究成果: Conference article査読

3 被引用数 (Scopus)

抄録

We have investigated microstructures related to anomalous ferroelectric properties such as the magnetocapacitance effect in magnetic ferroelectric compounds YMn1 - xTixO3 and (Y,A)Mn0.825Ti0.175O3 (A = La, Ca, Zr) mainly by the transmission electron microscopy. It is found that the size of the ferroelectric domains in YMn1 - xTixO3 depends strongly on the Ti concentration (x) and the size is estimated to be about 10-20 nm in the x = 0.175 compound. In addition, structural change from the ferroelectric P63 cm phase to the rhombohedral one was found in the x = 0.40 compound. On the other hand, characteristic diffuse scattering elongating along both the [001] and [110] direction was found in (Y,Zr)Mn0.825Ti0.175O3, which is similar to that found in the x = 0.175 compound. It is revealed that the partial substitution in YMnO3 breaks the long-ranged FE ordering and structural fluctuation is induced, which should be responsible for the anomalous FE behaviors in these compounds.

本文言語English
ページ(範囲)170-176
ページ数7
ジャーナルFerroelectrics
348
DOI
出版ステータスPublished - 2007
イベント8th Russia/CIS/Baltic/Japan Symposium on Ferroelectricity, RCBJSF-8 - Tsukuba, Japan
継続期間: 2006 5 152006 5 19

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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