Study on magnetic and dielectric properties of YMnO3ceramics

Chao Zhang, Jie Su, Xiaofei Wang, Fengzhen Huang, Junting Zhang, Yaoyang Liu, Liang Zhang, Kangli Min, Zhijun Wang, Xiaomei Lu, Feng Yan, Jinsong Zhu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

35 Citations (Scopus)

Abstract

The magnetic and dielectric properties were investigated in the hexagonal YMnO3ceramics synthesized by sol-gel method. An antiferromagnetic order about 70 K and a weak ferromagnetic order at 5 K have been detected in YMnO3ceramics. 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 YMnO3ceramics and they can be explained as the dipolar effects associated with the charge carrier hopping between Mn2+and Mn3+and oxygen vacancy, respectively.
Original languageEnglish
Pages (from-to)7738-7741
Number of pages4
JournalJournal of Alloys and Compounds
Volume509
Issue number29
DOIs
Publication statusPublished - 21 Jul 2011

Keywords

  • Magnetic and dielectric properties
  • YMnO ceramics 3

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this