Magnetic phase transitions in the NdFe₃(BO₃)₄ multiferroic

Magnetic phase transitions in the NdFe₃(BO₃)₄ multiferroic

Zvyagina, G.A. ; Zhekov, K.R. ; Bilych, I.V. ; Zvyagin, A.A. ; Gudim, I.A. ; Temerov, V.L.

Тема: Низкотемператуpный магнетизм

Інший ID: PACS: 72.55.+s, 74.25.Ld

URI: http://dspace.nbuv.gov.ua/handle/123456789/118808

Посилання: Magnetic phase transitions in the NdFe₃(BO₃)₄ multiferroic / G.A. Zvyagina, K.R. Zhekov, I.V. Bilych, A.A. Zvyagin, I.A. Gudim, V.L. Temerov // Физика низких температур. — 2011. — Т. 37, № 12. — С. 1269–1281. — Бібліогр.: 23 назв. — англ.

Підтримка: The authors thank V.I. Fomin and V.S. Kurnosov for the fruitful discussion of the results of our study. A.A.Z. thanks Max-Planck-Institut für Physik komplexer Systeme, Dresden, for kind hospitality.

Дата: 2011

Завантажень: 356

Magnetic phase transitions in the NdFe₃(BO₃)₄ multiferroic

Анотація:

Low-temperature studies of the behavior of the sound velocity and attenuation of acoustic modes have been performed on a single crystal NdFe₃(BO₃)₄ Transitions of the magnetic subsystem to the antiferromagnetically ordered state at TN ≈ 30.6 K have been revealed in the temperature behavior of the elastic characteristics. The features in the temperature behavior of elastic characteristics of the neodymium ferroborate and its behavior in the external magnetic field, applied in the basic plane of the crystal, permit us to suppose that the transition to an incommensurate spiral phase is realized in the system. This phase transition behaves as the first order one. H–T phase diagrams for the cases H || a and H || b have been constructed. The phenomenological theory, which explains observed features, has been developed.

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