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

100%

Dzubinska A., Reiffers M., Espeso J., Rodríguez Fernández J.

Acta Physica Polonica A

2017

vol. 131

issue 4

997-999

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.

Point-Contact Spectroscopy of Ce_{1-x}RE_{x}Ni_{5} (RE = Pr, Nd)

76%

Kačmárová T., Reiffers M., Garcia Soldevilla J., Goméz Sal J., Espeso J., Blanco J.

Acta Physica Polonica A

2000

vol. 97

issue 5

795-798

We report on the study of the electron-quasiparticle interaction function in Ce_{1-x}RE_{x} Ni_{5} (RE = Pr, Nd) pseudobinary compounds for x = 0, 0.2, 0.5, 0.8, and 1 measured by means of point-contact spectroscopy. The measured point-contact spectra (d^{2}V/dI^{2} - directly proportional to the electron- quasiparticle interaction function) of the heterocontacts between Ce_{1-x} RE_{x}Ni_{5} and Cu in the ballistic regime are presented.

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2 Acta Physica Polonica A

1 2017

1 2000

2 Espeso J.

2 Reiffers M.

1 Blanco J.

1 Dzubinska A.

1 Garcia Soldevilla J.

1 Goméz Sal J.

1 Kačmárová T.

1 Rodríguez Fernández J.

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

Point-Contact Spectroscopy of Ce_{1-x}RE_{x}Ni_{5} (RE = Pr, Nd)