Neutron powder diffraction investigation of magnetic structure and spin reorientation transition of HoFe1-xCrxO3 solid solutions

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

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Author(s)

  • Yuqing Li
  • Jianbo Gao
  • Hao Guo
  • Wenze Han
  • Kai Sun
  • Meimei Wu
  • Xiping Chen
  • Lei Xie
  • Frank Klose
  • Dongfeng Chen

Detail(s)

Original languageEnglish
Pages (from-to)382-388
Journal / PublicationJournal of Magnetism and Magnetic Materials
Volume417
Online published25 May 2016
Publication statusPublished - 1 Nov 2016

Abstract

Orthoferrite solid solution HoFe1-xCrxO3 (x=0, 0.2,...,1.0) was synthesized via solid state reaction methods. The crystal structure, magnetism and spin reorientation properties of this system were investigated by X-ray diffraction, neutron powder diffraction and magnetic measurements. For compositions of x≤0.6, the system exhibits similar magnetic properties to HoFeO3. With increasing Cr-doping, the system adopts a Γ4(GxAyFz) magnetic configuration with a decreased Neel temperature from 640 K to 360 K. A Γ42 spin reorientation of Fe(Cr)3+ was also observed in this system with an increase in transition temperature from 56 K to about 200 K due to competition between the Fe(Cr)-Fe(Cr) and Ho-Fe(Cr) interactions. For the x≥0.8, the system behaves more like HoCrO3 which adopts a Γ2(FxCyGz) configuration with no spin reorientation below the Neel temperature TN. Throughout the whole substitution range, we found that the saturated moment of Fe(Cr) was less than the ideal value for a free ion, which implies the existence of spin fluctuation in this system. A systematic magnetic structure variation with Cr-substitution is revealed by Rietveld refinement. A phase diagram combining the results of the magnetic measurements and neutron powder diffraction results was obtained.

Research Area(s)

  • Magnetic structure, Multiferroics, Neutron diffraction, Orthochromite, Orthoferrite, Spinreorientation

Citation Format(s)

Neutron powder diffraction investigation of magnetic structure and spin reorientation transition of HoFe1-xCrxO3 solid solutions. / Liu, Xinzhi; Hao, Lijie; Liu, Yuntao; Ma, Xiaobai; Meng, Siqin; Li, Yuqing; Gao, Jianbo; Guo, Hao; Han, Wenze; Sun, Kai; Wu, Meimei; Chen, Xiping; Xie, Lei; Klose, Frank; Chen, Dongfeng.

In: Journal of Magnetism and Magnetic Materials, Vol. 417, 01.11.2016, p. 382-388.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review