Spin-phonon interaction and mode softening in NiF2

Магнетизм

Автор(и)

  • D. J. Lockwood Institute for Microstructural Sciences, National Research Council, Ottawa, ON KIA OR6

DOI (Low Temperature Physics):


https://doi.org/10.1063/1.1496657

Ключові слова:

PACS: 78.30.Hv, 75.50.Ee, 63.20.Dj, 63.20.Kr

Анотація

The temperature dependence of the four Raman-active phonons in NiF2 has been investigated at temperatures above and below the antiferromagnetic ordering temperature of TN=73 K. All four modes exhibit distinct anomalies in their intensities and frequencies near TN due to spin-phonon coupling. The phonon linewidths also exhibit weak anomalies. From the temperature dependences of the phonon frequencies, estimates are made of the spin-phonon coupling coefficients. The B1g phonon exhibits anomalous mode softening with decreasing temperature from 300 K to TN .

Завантаження

Дані завантаження ще не доступні.

Downloads

Опубліковано

2002-06-10

Як цитувати

(1)
D. J. Lockwood, Spin-phonon interaction and mode softening in NiF2: Магнетизм, Low Temp. Phys. 28, (2002) [Fiz. Nizk. Temp. 28, 709-715, (2002)] DOI: https://doi.org/10.1063/1.1496657.

Номер

Том 28 № 7 (2002)

Розділ

Статті