Multiferroic properties of hexagonal Ba3Ti2MnO9

X. X. Wang; X. Y. Cheng; Y. Lin; C. Ma; K. Q. Ruan; X. G. Li

doi:10.1039/C5RA18392H

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Multiferroic properties of hexagonal Ba₃Ti₂MnO₉†

X. X. Wang,^a X. Y. Cheng,^a Y. Lin,^b C. Ma,^b K. Q. Ruan*^a and X. G. Li*^bc

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* Corresponding authors

^a Key Laboratory of Strongly-Coupled Quantum Matter Physics, Chinese Academy of Sciences, School of Physical Sciences, University of Science and Technology of China, Hefei, Anhui 230026, China
E-mail: kqruan@ustc.edu.cn
Tel: +86 551 63600652

^b Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei, Anhui 230026, China
E-mail: lixg@ustc.edu.cn

^c School of Physics and Materials Science, Anhui University, Hefei, Anhui 230601, China

Abstract

The magnetic and electrical properties of hexagonal Ba₃Ti₂MnO₉ are investigated. The material is a noncentrosymmetric evolution from hexagonal BaTiO₃ with a space group P6₃mc. The existence and distribution of both Mn⁴⁺ and Ti⁴⁺ are checked using an electron energy-loss spectroscopy line scan by high resolution transmission electron microscopy. Magnetic transitions are attributed to the short range ordering and magnetic frustration. The frequency independent behavior of the dielectric peak shows a ferroelectric transition at 222 K. Both Positive Up and Negative Down (PUND) techniques and the local piezoresponse confirm the ferroelectric behavior of Ba₃Ti₂MnO₉.

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Article information

DOI: https://doi.org/10.1039/C5RA18392H
Article type: Paper
Submitted: 09 Sep 2015
Accepted: 16 Nov 2015
First published: 25 Nov 2015

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RSC Adv., 2015,5, 101544-101551

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Multiferroic properties of hexagonal Ba₃Ti₂MnO₉

X. X. Wang, X. Y. Cheng, Y. Lin, C. Ma, K. Q. Ruan and X. G. Li, RSC Adv., 2015, 5, 101544 DOI: 10.1039/C5RA18392H

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