Наукова електронна бібліотека
періодичних видань НАН України
періодичних видань НАН України
Pressure effect on magnetic properties of valence fluctuating system Ce(Ni₁₋xCux)₅
Репозиторій DSpace/Manakin
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Pressure effect on magnetic properties of valence fluctuating system Ce(Ni₁₋xCux)₅
Тема:
Электронные свойства многокомпонентных соединений
Інший ID:
PACS: 71.20.Eh, 75.30.Mb, 75.80.+q
Посилання:
Pressure effect on magnetic properties of valence fluctuating system Ce(Ni₁₋xCux)₅ / G.E. Grechnev, A.V. Logosha, A.S. Panfilov, I.V. Svechkarev, O. Musil, P. Svoboda // Физика низких температур. — 2011. — Т. 37, № 9-10. — С. 1062–1067. — Бібліогр.: 28 назв. — англ.
Підтримка:
The authors dedicate this work to the 80th birthday anniversary of V.G. Peschansky, who is one of pioneers in the field of magnetic properties studies in metallic systems.
The work of P.S. and O.M. is a part of the research program MSM 0021620834 financed by the Ministry of Education of the Czech Republic. The authors thank V.A. Desnenko for help in magnetic measurements.
Дата:
2011
Переглядів:
754
Завантажень:
230
Анотація:
Magnetic susceptibility χ of the isostructural Ce(Ni₁₋xCux)₅ alloys (0 ≤ x ≤ 0.9) was studied as a function of the hydrostatic pressure up to 2 kbar at fixed temperatures 77.3 and 300 K. A pronounced pressure effect on susceptibility is found to be negative in sign and nonmonotonously dependent on the Cu content, showing a sharp maximum at x 0.4. The experimental results are discussed in terms of the valence instability of Ce ion in the studied alloys. For the reference CeNi5 compound the main contributions to χ and their volume dependence are calculated ab initio within the local spin density approximation, and appeared to be in close agreement with experimental data.
