Pressure effect on magnetic properties of valence fluctuating system Ce(Ni1-xCux)5
Электронные свойства многокомпонентных соединений
DOI (Low Temperature Physics):
https://doi.org/10.1063/1.3671862Ключові слова:
intermediate valence, magnetic susceptibility, pressure effect, electronic structure.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.
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Опубліковано
2011-08-22
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G.E. Grechnev, A.V. Logosha, A.S. Panfilov, I.V. Svechkarev, O. Musil, and P. Svoboda, Pressure effect on magnetic properties of valence fluctuating system Ce(Ni1-xCux)5: Электронные свойства многокомпонентных соединений, Low Temp. Phys. 37, (2011) [Fiz. Nizk. Temp. 37, 1062-1067, (2011)] DOI: https://doi.org/10.1063/1.3671862.
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