Charge-ordering-induced polar domains and domain walls in a bilayered manganite Pr (Sr0.15 Ca0.85) 2 Mn2 O7

H. Itoh, Y. Tokunaga, N. Kida, R. Shimano, Y. Tokura

研究成果: Article査読

7 被引用数 (Scopus)

抄録

We have observed charge-ordering-induced polar domains and domain walls (DWs) in a bilayered manganite Pr (Sr0.15 Ca0.85) 2 Mn2 O7 using second-harmonic-generation microscopy. Around the transition temperature TC ∼306K, a nucleation process of the domains with spontaneous polarization is clearly observed. Well below TC, the characteristic band-shaped dark patterns are identified in the second-harmonic images. On the analogy of the nucleation feature, they can be assigned to the DWs separating antiparallel polar domains. The anisotropy in the DW is governed by the geometrical constraint of the charge and orbital ordering, not by the electrostatic stability as in conventional ferroelectric DWs.

本文言語English
論文番号032902
ジャーナルApplied Physics Letters
96
3
DOI
出版ステータスPublished - 2010

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

フィンガープリント 「Charge-ordering-induced polar domains and domain walls in a bilayered manganite <sub>Pr (Sr0.15 Ca0.85) 2</sub> Mn2 O<sup>7</sup>」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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