Antiferromagnetic resonance and magnetic anisotropy in PrxY1−xFe3(BO3)4 crystals in the region of the magnetic structure transformation “easy axis – easy plane”

Описание

Тип публикации: статья из журнала

Год издания: 2022

Идентификатор DOI: 10.1016/j.jallcom.2022.164821

Ключевые слова: anisotropy, magnetic measurements, magnetically ordered materials, rare earth alloys and compounds, scanning electron microscopy, sem, spin dynamics

Аннотация: The spin dynamics, magnetic structures and magnetic anisotropy of single crystals PrxY1−xFe3(BO3)4 have been studied using antiferromagnetic resonance (AFMR) in a wide range of frequencies, magnetic fields, and temperatures. The frequency-field dependences of AFMR for the crystals with x = 0.25 and 0.45 are characteristic of antifeПоказать полностьюrromagnets with the easy plane (EP) anisotropy. The crystals with x = 0.75 and 1.0 exhibit frequency-field dependences that are typical for antiferromagnets with the easy axis (EA) anisotropy. In these crystals, a significant decrease in the effective anisotropy fields of praseodymium upon the transition to the spin-flop state has been found. It is shown that this is the main reason for the large lability intervals, within which the regions of coexistence of the collinear and spin-flop states overlap. In the crystal with x = 0.67, the magnetic field applied along the trigonal axis of the crystal leads to the spin reorientation transition from the EA to the EP state. A magnetic phase diagram of the states on the plane “magnetic field - temperature” is built. In this crystal, the effective anisotropy field of praseodymium also decreases upon the transition to the field-induced EP state. Diamagnetic dilution of the praseodymium subsystem leads to the contribution of this subsystem to the total anisotropy field depending almost linearly on the praseodymium concentration. © 2022 Elsevier B.V.

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Издание

Журнал: Journal of Alloys and Compounds

Выпуск журнала: Vol. 909

Номера страниц: 164821

ISSN журнала: 09258388

Издатель: Elsevier Ltd

Персоны

  • Pankrats A.I. (Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Akademgorodok 50/38, Krasnoyarsk, 660036, Russian Federation, Siberian Federal University, 79 Svobodny st., Krasnoyarsk, 660041, Russian Federation)
  • Zharkov S.M. (Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Akademgorodok 50/38, Krasnoyarsk, 660036, Russian Federation, Siberian Federal University, 79 Svobodny st., Krasnoyarsk, 660041, Russian Federation)
  • Zeer G.M. (Siberian Federal University, 79 Svobodny st., Krasnoyarsk, 660041, Russian Federation)
  • Gudim I.A. (Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Akademgorodok 50/38, Krasnoyarsk, 660036, Russian Federation)

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