Non-magnetic ions doping effects in the magnetic properties of zircon-type GdCrO4 compound

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

卷:533

Article

Jesus, A. C. B.¹  Jesus, J. R.²  Bittar, E. M.²  Duque, J. G. S.^1,3  Meneses, C. T.^1,3 

[1] Univ Fed Sergipe, Programa Posgrad Fis, Campus Prof Jose Aloisio de Campos, BR-49100000 Sao Cristovao, SE, Brazil

[2] Ctr Brasileiro Pesquisas Fis, BR-22290180 Rio De Janeiro, RJ, Brazil

[3] UFS, Dept Fis, Campus Prof Alberto Carvalho, BR-49506036 Itabaiana, SE, Brazil

关键词: Zircon-type;    X-ray diffraction;    Magnetic properties;   

DOI  :  10.1016/j.jmmm.2021.167953

来源: Elsevier

【 摘 要 】

In this paper, we report the effect of V and Y-doping on the structural and magnetic properties of the GdCrO4 compound obtained by the co-precipitation method. The analysis of the X-ray diffraction data using the Rietveld refinement confirm the formation of a single phase consistent with the zircon-type structure (tetragonal and I41/ amd space group) and a decreasing of lattice parameter with increasing of doping. The T-dependent magnetic susceptibility is consistent with a ferromagnetic and an antiferromagnetic orders for YCrO4 and GdVO4 samples, respectively. On the other hand, the positive signal of Curie-Weiss constants of doped samples indicate the predominance of ferromagnetic correlations. Furthermore, the displacement of the maximum of susceptibility and the thermal hysteresis as a function of doping can be an indication of frustration effects. Isothermal magnetization measured at T = 2 K show a change of slope at low magnetic fields for V-doped samples and a decrease of the magnetic moment for Y-doped GdCrO4. At T = 15 K, the analysis of MvsH curves reveal that only part of Gd3+ magnetic moments are ordered.

【 授权许可】

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