Magnetic and Heat Capacity Study of the new Gd_{1-x}Ce_xNi₅ Series

• Authors: A. Dzubinska , M. Reiffers , J. Espeso , J. Rodríguez Fernández
• Languages of publication: EN

Abstracts

EN

We have prepared a new system of Gd_{1-x}Ce_xNi₅ polycrystalline samples with concentrations x =0, 0.2, 0.5, and 0.8 in order to study the influence of different rare-earths substitutions on the ground state connected with spin fluctuations. GdNi₅ is a ferromagnetic compound with T_{C}=31.8 K and CeNi₅ is a well-known spin fluctuation compound without magnetic ordering down to the lowest temperatures. X-ray diffraction study confirms the hexagonal crystal structure and the single phase samples. Magnetic properties (M(T),M(B)) show that an increasing content of Ce depresses the transition temperature, T_{C}, down to 4.9 K for x=0.8. The heat capacity measurements confirmed these results.

Keywords

EN

71.27.+a; 75.30.-m; 75.30.Mb

Discipline

• 71.27.+a: Strongly correlated electron systems; heavy fermions
• 75.30.Mb: Valence fluctuation, Kondo lattice, and heavy-fermion phenomena(see also 71.27.+a Strongly correlated electron systems, heavy fermions; for heavy-fermion superconductors, see 74.70.Tx)
• 75.30.-m: Intrinsic properties of magnetically ordered materials(for critical point effects, see 75.40.-s; for magnetotransport phenomena, see 75.47.-m)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2017
• Volume: 131
• Issue: 4
• Pages: 997-999

Dates

published

2017-04

Contributors

author

A. Dzubinska

• Faculty of Natural Sciences, P.J. Safarik University, 040 01 Košice, Slovakia

author

M. Reiffers

• Faculty of Humanities and Natural Sciences, Prešov University, 081 16 Prešov, Slovakia

author

J. Espeso

• Departamento CITIMAC, Universidad de Cantabria, 390 05 Santander, Spain

author

J. Rodríguez Fernández

• Departamento CITIMAC, Universidad de Cantabria, 390 05 Santander, Spain

References

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Identifiers

DOI

10.12693/APhysPolA.131.997