Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/18745
Title: Study on magnetic and dielectric properties of YMnO3 ceramics
Authors: Zhang, C
Su, J
Wang, X
Huang, F
Zhang, J
Liu, Y
Zhang, L
Min, K
Wang, Z
Lu, X
Yan, F 
Zhu, J
Keywords: Magnetic and dielectric properties
YMnO3 ceramics
Issue Date: 2011
Publisher: Elsevier
Source: Journal of alloys and compounds, 2011, v. 509, no. 29, p. 7738-7741 How to cite?
Journal: Journal of alloys and compounds 
Abstract: The magnetic and dielectric properties were investigated in the hexagonal YMnO3 ceramics synthesized by sol-gel method. An antiferromagnetic order about 70 K and a weak ferromagnetic order at 5 K have been detected in YMnO3 ceramics. In addition, we observed also the exchange-bias (EB) effect at low temperatures and it may originate from exchange coupling at the interface between ferromagnetic and antiferromagnetic orders for the co-existence of these two orders in some temperature region in hexagonal YMnO3. Furthermore, the dielectric measurements showed two thermally activated relaxation behaviors following the Arrhenius law in 290-430 K and above 500 K in YMnO3 ceramics and they can be explained as the dipolar effects associated with the charge carrier hopping between Mn 2+ and Mn3+ and oxygen vacancy, respectively.
URI: http://hdl.handle.net/10397/18745
ISSN: 0925-8388
DOI: 10.1016/j.jallcom.2011.04.128
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