Fe-induced enhancement of antiferromagnetic spin correlations in Mn2−xFexBO4

Описание

Тип публикации: статья из журнала

Год издания: 2018

Идентификатор DOI: 10.1016/j.jmmm.2017.12.037

Ключевые слова: Magnetic frustrations, REHAC, Spin-glass, SRO spin correlations

Аннотация: Fe substitution effect on the magnetic behavior of Mn2−xFexBO4 (x = 0.3, 0.5, 0.7) warwickites has been investigated combining Mössbauer spectroscopy, dc magnetization, ac magnetic susceptibility, and heat capacity measurements. The Fe3+ ions distribution over two crystallographic nonequivalent sites is studied. The Fe introductionПоказать полностьюbreaks a long-range antiferromagnetic order and leads to onset of spin-glass ground state. The antiferromagnetic short-range-order spin correlations persist up to temperatures well above TSG reflecting in increasing deviations from the Curie-Weiss law, the reduced effective magnetic moment and “missing” entropy. The results are interpreted in the terms of the progressive increase of the frustration effect and the formation of spin-correlated regions. © 2017 Elsevier B.V.

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Издание

Журнал: Journal of Magnetism and Magnetic Materials

Выпуск журнала: Vol. 452

Номера страниц: 90-99

Издатель: Elsevier B.V.

Авторы

  • Kazak N.V. (KSC SB RAS, Fed Res Ctr, Kirensky Inst Phys, Krasnoyarsk 660036, Russia)
  • Platunov M.S. (KSC SB RAS, Fed Res Ctr, Kirensky Inst Phys, Krasnoyarsk 660036, Russia)
  • Knyazev Yu. V. (KSC SB RAS, Fed Res Ctr, Kirensky Inst Phys, Krasnoyarsk 660036, Russia)
  • Moshkina E.M. (KSC SB RAS, Fed Res Ctr, Kirensky Inst Phys, Krasnoyarsk 660036, Russia; Siberian State Univ Sci & Technol, Krasnoyarsk 660014, Russia)
  • Gavrilkin S.Yu. (RAS, PN Lebedev Phys Inst, Moscow 119991, Russia)
  • Bayukov O.A. (KSC SB RAS, Fed Res Ctr, Kirensky Inst Phys, Krasnoyarsk 660036, Russia)
  • Gorev M.V. (KSC SB RAS, Fed Res Ctr, Kirensky Inst Phys, Krasnoyarsk 660036, Russia)
  • Pogoreltsev E.I. (KSC SB RAS, Fed Res Ctr, Kirensky Inst Phys, Krasnoyarsk 660036, Russia)
  • Zeer G.M. (Siberian Fed Univ, Krasnoyarsk 660041, Russia)
  • Zharkov S.M. (KSC SB RAS, Fed Res Ctr, Kirensky Inst Phys, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Krasnoyarsk 660041, Russia)
  • Ovchinnikov S.G. (KSC SB RAS, Fed Res Ctr, Kirensky Inst Phys, Krasnoyarsk 660036, Russia)

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