Excess-Hole Induced High Temperature Polarized State and its Correlation with the Multiferroicity in Single Crystalline DyMnO3

Tao Zou; Zhiling Dun; Huibo Cao; Mengze Zhu; Daniel Coulter; Haidong Zhou; Xianglin Ke

doi:10.1063/1.4892470

Excess-Hole Induced High Temperature Polarized State and its Correlation with the Multiferroicity in Single Crystalline DyMnO3

Materials Science 2014-09-05 v1

Authors: Tao Zou , Zhiling Dun , Huibo Cao , Mengze Zhu , Daniel Coulter , Haidong Zhou , Xianglin Ke

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Abstract

Controlling the ferroelectricity and magnetism in multiferroic materials has been an important research topic. We report the formation of a highly polarized state in multiferroic DyMnO3 single crystals which develops well above the magnetic transition temperatures, and we attribute it the thermally stimulated depolarization current effect of excess holes forming Mn4+ ions in the system. We also show that this high temperature polarized state intimately correlates with the lower temperature ferroelectric state that is induced by the incommensurate spiral magnetic order of Mn spins. This study demonstrate an efficient approach to tune the multiferroicity in the manganite system.

Keywords

multiferroicity DyMnO3 excess holes polarized state ferroelectricity magnetism manganite

Cite

@article{arxiv.1409.1246,
  title  = {Excess-Hole Induced High Temperature Polarized State and its Correlation with the Multiferroicity in Single Crystalline DyMnO3},
  author = {Tao Zou and Zhiling Dun and Huibo Cao and Mengze Zhu and Daniel Coulter and Haidong Zhou and Xianglin Ke},
  journal= {arXiv preprint arXiv:1409.1246},
  year   = {2014}
}

Excess-Hole Induced High Temperature Polarized State and its Correlation with the Multiferroicity in Single Crystalline DyMnO3

Abstract

Keywords

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