Spin-phonon interaction and mode softening in NiF₂

• Published in: Физика низких температур
• Date: 2002
• Main Author: Lockwood, D.J.
• Format: Article
• Language: English
• Published: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2002
• Subjects: Магнетизм
• Online Access: https://nasplib.isofts.kiev.ua/handle/123456789/130240
• Journal Title: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Cite this: Spin-phonon interaction and mode softening in NiF₂ / D.J. Lockwood // Физика низких температур. — 2002. — Т. 28, № 7. — С. 709-715. — Бібліогр.: 21 назв. — англ.

The temperature dependence of the four Raman-active phonons in NiF₂ is 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 li...