Collective Spin Glass State in Nanoscale Particles of Ferrihydrite

Описание

Тип публикации: статья из журнала

Год издания: 2020

Идентификатор DOI: 10.1134/S1063782620120362

Ключевые слова: ferrihydrite, magnetic anisotropy, magnetic resonance, nanoparticles

Аннотация: Abstract: Ferromagnetic resonance was used to study three types of ferrihydrite nanoparticles: nanoparticles formed as a result of the cultivation of microorganisms Klebsiella oxytoca; chemically prepared ferrihydrite nanoparticles; chemically prepared ferrihydrite nanoparticles doped with Cu. It is established from the ferromagnetПоказать полностьюic resonance data that the frequency-field dependence (in the temperature range ТP < T < T*) is described by the expression: 2πν/γ = НR + HA(T = 0)(1 – T/Т*), where γ is the gyromagnetic ratio, HR is the resonance field. The induced anisotropy HA is due to the spin-glass state of the near-surface regions. TP temperature characterizes the energy of the interparticle interaction of nanoparticles. © 2020, Pleiades Publishing, Ltd.

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Издание

Журнал: Semiconductors

Выпуск журнала: Vol. 54, Is. 12

Номера страниц: 1710-1712

ISSN журнала: 10637826

Издатель: Pleiades journals

Авторы

  • Stolyar S.V (SB Russian Acad Sci, Kirensky Inst Phys, Krasnoyarsk 660036, Russia; Fed Res Ctr KSC SB RAS, Krasnoyarsk Sci Ctr, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Krasnoyarsk 660041, Russia)
  • Yaroslavtsev R.N. (SB Russian Acad Sci, Kirensky Inst Phys, Krasnoyarsk 660036, Russia; Fed Res Ctr KSC SB RAS, Krasnoyarsk Sci Ctr, Krasnoyarsk 660036, Russia)
  • Ladygina V.P. (Fed Res Ctr KSC SB RAS, Krasnoyarsk Sci Ctr, Krasnoyarsk 660036, Russia)
  • Balaev D.A. (SB Russian Acad Sci, Kirensky Inst Phys, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Krasnoyarsk 660041, Russia)
  • Pankrats A.I (SB Russian Acad Sci, Kirensky Inst Phys, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Krasnoyarsk 660041, Russia)
  • Iskhakov R.S. (SB Russian Acad Sci, Kirensky Inst Phys, Krasnoyarsk 660036, Russia)