Giant Magnetodielectric Effect and Magnetic Properties of Ho0.5Pr0.5FeO3 Ceramics

doi:10.3724/SP.J.1077.2014.12733

Journal of Inorganic Materials ›› 2014, Vol. 29 ›› Issue (1): 77-80.DOI: 10.3724/SP.J.1077.2014.12733

• Research Paper • Previous Articles Next Articles

Giant Magnetodielectric Effect and Magnetic Properties of Ho_0.5Pr_0.5FeO₃ Ceramics

XIE Hui¹, YUAN Shu-Juan¹, KANG Bao-Juan¹, LU Bo², CAO Shi-Xun¹, ZHANG Jin-Cang¹

(1. Department of Physics, Shanghai University, Shanghai 200044, China; 2. Laboratory for Microstructures, Shanghai University, Shanghai 200444, China)

Received:2012-12-04 Revised:2013-03-16 Published:2014-01-20 Online:2013-12-09
About author:XIE Hui. E-mail: xiehui19870620@163.com
Supported by:
National Natural Science Foundation of China (11274221, 50932003, 11074163); Research Innovation Fund of the Shanghai Education Committee (12YZ018)

Abstract

Abstract: Polycrystalline sample Ho_0.5Pr_0.5FeO₃ was prepared by a solid state reaction method. The magnetic properties and magnetodielectric effect of the sample were investigated. The results show that the Ho³⁺ antiferromagnetoly orders at T=4.5 K and the Fe³⁺ spin reorientation transition occurs at 59-80 K. The sample exhibits a colossal dielectric constant value of ~10³around 270 K, which is correlated with a resistance transition at 270 K. The decrease of the resistance and the dielectric loss lead to the increase of the dielectric constant. Most importantly, a magnetic field of 1.6×10⁶ A/m can induce a giant magnetodielectric response of 5500% under?kHz at room temperature. The giant magnetodielectric effect might come from the magnetorisistance effect.

Key words: magnetodielectric effect, dielectric constant, solid state reaction, spin reorientation

CLC Number:

TQ174

XIE Hui, YUAN Shu-Juan, KANG Bao-Juan, LU Bo, CAO Shi-Xun, ZHANG Jin-Cang. Giant Magnetodielectric Effect and Magnetic Properties of Ho_0.5Pr_0.5FeO₃ Ceramics[J]. Journal of Inorganic Materials, 2014, 29(1): 77-80.

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Giant Magnetodielectric Effect and Magnetic Properties of Ho_0.5Pr_0.5FeO₃ Ceramics

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