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.
Журнал: Journal of Alloys and Compounds
Выпуск журнала: Vol. 909
Номера страниц: 164821
ISSN журнала: 09258388
Издатель: Elsevier Ltd