Ferromagnetism and strong magnetic anisotropy of the PbMnBO4 orthoborate single crystals

Тип публикации: статья из журнала

Год издания: 2016

Идентификатор DOI: 10.1016/j.jmmm.2016.04.042

Ключевые слова: Strong ferromagnetic anisotropy, Ferromagnetic resonance, Exchange interactions, Exchange interactions, Ferromagnetic resonance, Strong ferromagnetic anisotropy

Аннотация: The PbMnBO4 orthoborate single crystals were first grown and their magnetic properties and ferromagnetic resonance were studied. It was found that the ferromagnetic state below the Curie temperature T-c=31 K is characterized by the strong magnetic anisotropy. The significant effective anisotropy fields of PbMnBO4 determine the energy gap in the FMR spectrum, which is extraordinary large for ferromagnets (112 GHz at T=4.2 K). It was shown that the static Jahn Teller effect characteristic of the Mn3+ ion leads to both the ferromagnetic ordering and the strong magnetic anisotropy in the crystal. In the strong external magnetic field the induced ferromagnetic ordering is retained in the crystal above the Curie temperature up to the temperatures multiply higher than T-c. A weak anomaly of the dielectric permittivity was observed in PbMnBO4 at the Curie temperature at which the long-range ferromagnetic order is established. (C) 2016 Elsevier B.V. All rights reserved.

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Издание

Журнал: JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

Выпуск журнала: Vol. 414

Номера страниц: 82-89

ISSN журнала: 03048853

Место издания: AMSTERDAM

Издатель: ELSEVIER SCIENCE BV

Авторы

  • Pankrats A. (Siberian Federal University)
  • Sablina K. (Kirensky Institute of Physics,Russian Academy of Sciences)
  • Balaev A. (Kirensky Institute of Physics,Russian Academy of Sciences)
  • Kolkov M. (Siberian Federal University)
  • Tugarinov V. (Kirensky Institute of Physics,Russian Academy of Sciences)
  • Bovina A. (Kirensky Institute of Physics,Russian Academy of Sciences)
  • Eremin M. (Institute of Physics,Kazan Federal University)

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