Effect of pressure on the magnetic properties of CrB₂

Effect of pressure on the magnetic properties of CrB₂

Grechnev, G.E. ; Panfilov, A.S. ; Fedorchenko, A.V. ; Filippov, V.B. ; Lyashchenko, A.B. ; Vasiliev, A.N.

Тема: Низкотемпеpатуpный магнетизм

Інший ID: PACS: 75.50.Ee, 75.10.Lp, 75.80.+q

URI: http://dspace.nbuv.gov.ua/handle/123456789/117258

Посилання: Effect of pressure on the magnetic properties of CrB₂ / G.E. Grechnev, A.S. Panfilov, A.V. Fedorchenko, V.B. Filippov, A.B. Lyashchenko, A.N. Vasiliev // Физика низких температур. — 2009. — Т. 35, № 7. — С. 677-682. — Бібліогр.: 26 назв. — англ.

Підтримка: The authors thank Prof. I.V. Svechkarev and Dr. A. Grechnev for fruitful discussions and comments. This work has been supported by the Russian–Ukrainian RFBR-NASU project 8-2009.

Дата: 2009

Завантажень: 646

Effect of pressure on the magnetic properties of CrB₂

Анотація:

Magnetic susceptibility c of the itinerant antiferromagnet CrB₂ with TN ≃ 87K was studied as a function of the hydrostatic pressure up to 2 kbar at fixed temperatures 78 and 300 K. The pressure effect on c is found to be negative in sign and weakly dependent on the magnetic state of the compound. In addition, the measured pressure dependence of the Néel temperature, dTN / dP = (0.1 ± 0.1) K/kbar, is roughly two orders of magnitude smaller than the corresponding value for the pure chromium. The main contributions to c and their volume dependence are calculated ab initio within the local spin density approximation, and appeared to be in close agreement with the experimental data.

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