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 Ho0.5Pr0.5FeO3 Ceramics

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

  1. (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:
  • Supported by:

    National Natural Science Foundation of China (11274221, 50932003, 11074163); Research Innovation Fund of the Shanghai Education Committee (12YZ018)

Abstract: Polycrystalline sample Ho0.5Pr0.5FeO3 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 ~103 around 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: