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Ferroelectrics Volume 462, 2014 - Issue 1: Proceedings of the Thirteenth International Meeting on Ferroelectricity (IMF-13)
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Section B: CHARACTERIZATION OF SINGLE CRYSTALS

Ferroelectric and Structural Antiphase Domain and Domain Wall Structures in Y(Mn,Ti)O3

S. MoriDepartment of Materials Science, Osaka Prefecture University, Sakai, Osaka599-8531, Japan;JST-CREST, Tokyo102-0075, JapanCorrespondence[email protected]
,
K. KurushimaToray Research Center, Shiga520-8567, Japan
,
H. KamoDepartment of Materials Science, Osaka Prefecture University, Sakai, Osaka599-8531, Japan
,
Y. IshiiDepartment of Materials Science, Osaka Prefecture University, Sakai, Osaka599-8531, Japan;JST-CREST, Tokyo102-0075, Japan
,
F.-T. HuangDepartment of Physics and Astronomy, Rutgers University, NJ08854, U.S.A.
,
Y. HoribeDepartment of Physics and Astronomy, Rutgers University, NJ08854, U.S.A.
,
T. KastufujiDepartment of Physics, Waseda University, Tokyo169-8555, Japan
&
S.-W. CheongDepartment of Physics and Astronomy, Rutgers University, NJ08854, U.S.A.
 show all
Pages 50-54 | Received 02 Sep 2013, Accepted 09 Oct 2013, Published online: 29 Apr 2014
 
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Abstract

We have investigated ferroelectric (FE) and structural antiphase (SAP) domains and domain wall structures at the atomic scale in hexagonal YMn1-xTixO3-δ by using aberration-corrected high-angle annular-dark-field scanning transmission electron microscopy (HAADF-STEM) experiments, combining with the conventional TEM observation techniques. Atomic shifts of Y3+ and Mn3+ (Ti4+) in the FE and SAP domains and domain wall structures in YMn1-xTixO3-δ are successfully visualized at the atomic scale. When Ti4+ are substituted for Mn3+, the magnitude of the shifts of Y3+ is reduced and the regions without any displacement of Y3+ along the [001] direction dominated around x-0.40. Our experimental results clearly revealed that partial substitution of Ti4+ for Mn3+ suppress the magnitude of the shifts of Y3+ ions along the [001] direction and the FE properties tend to diminish with increasing the amount of Ti4+ in YMn1-xTixO3-δ.

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