Raman scattering in LiNiPO₄ single crystal

Raman scattering in LiNiPO₄ single crystal

Fomin, V.I. ; Gnezdilov, V.P. ; Kurnosov, V.S. ; Peschanskii, A.V. ; Yeremenko, A.V. ; Schmid, H. ; Rivera, J.-P. ; Gentil, S.

Тема: Низкотемпеpатуpный магнетизм

Інший ID: PACS: 78.30.Hv

URI: http://dspace.nbuv.gov.ua/handle/123456789/130166

Посилання: Raman scattering in LiNiPO₄ single crystal / V.I. Fomin, V.P. Gnezdilov, V.S. Kurnosov, A.V. Peschanskii, A.V. Yeremenko, H.Schmid, J.-P. Rivera, S.Gentil // Физика низких температур. — 2002. — Т. 28, № 3. — С. 288-296. — Бібліогр.: 26 назв. — англ.

Підтримка: The authors thank Prof. N. F. Kharchenko for helpful discussions and steady interest in the work.

Дата: 2002

Завантажень: 673

Raman scattering in LiNiPO₄ single crystal

Анотація:

The complete Raman spectra of a single crystal of LiNiPO₄ for a wide temperature range are reported. Among the 36 Raman-active modes predicted by group theory, 33 have been detected. The analysis of the spectra in terms of internal modes of the (PO₄)³⁻ group and of external modes is done with success. Besides, the multiphonon Raman scattering is discussed. Low-frequency lines, observed in the antiferromagnetic phase, are assigned to magnon scattering and are discussed briefly.

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