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Structural and magnetic characterization of spin canted mixed ferrite-cobaltites LnFe0.5Co0.5O3 (Ln = Eu and Dy)

Authors
  • Shukla, A.
  • Lebedev, O.I.
  • Seikh, M.M.
  • Kundu, A.K.
Publication Date
Jan 01, 2019
Identifiers
DOI: 10.1016/j.jmmm.2019.165558
OAI: oai:HAL:hal-02278541v1
Source
HAL
Keywords
Language
English
License
Unknown
External links

Abstract

The mixed ferrite-cobaltites LnFe0.5Co0.5O3, with Ln = Eu andamp; Dy have been prepared by a sol-gel method and the samples have been characterized using X-ray diffraction and electron microscopy. The magnetic investigations reveal that both samples ordered in canted antiferromagnetic structures near room temperature. The Dzyaloshinskii-Moriya or antisymmetric exchange interaction induces weak ferromagnetism due to canting of the antiferromagnetically ordered spins. In the case of Ln-Fe-Co orthoferrites, two magnetic sublattices (Ln3+-4f and Fe3+/Co3+-3d) generally align in opposite directions and interesting temperature dependent phenomena e.g. uncompensated antiferromagnetic sublattices and spin-reorientations, are observed in the system. The existence of hysteresis at low temperature region has been explained in terms of the strength of magnetic interactions between Fe3+ and Co3+ ions with different A-site rare earth cations. © 2019 Elsevier B.V.

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