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

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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.

The Anisotropy of the Electrical Resistivity and Thermal Expansion of Single Crystal DyNi_{5}

84%

Kačmarčiková E., Reiffers M., Mihálik M., Kováč J., Menovsky A., Garcia Soldevilla J., Señas Pariente A., Goméz Sal J.

Acta Physica Polonica A

2000

vol. 97

issue 5

811-814

The results of the measurements of temperature dependence of the electrical resistivity ρ(T), thermal expansion L(T) and susceptibility χ(T) on single crystal DyNi_{5} in the temperature range 4.2-300 K are reported. The maximum in ρ(T) at T_{N}=12.2 K was observed which corresponds to the transition to antiferromagnetically ordered state. Taking into account the Bloch-Grüneisen formula for electron-phonon contribution ρ_{ph}(T) to ρ(T) the anisotropic magnetic contribution ρ_{mag}(T) was determined. We also observed the anisotropic behaviour of L(T) at low temperatures.

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2 Acta Physica Polonica A

2 2000

2 Garcia Soldevilla J.

2 Goméz Sal J.

2 Reiffers M.

1 Blanco J.

1 Espeso J.

1 Kačmarčiková E.

1 Kačmárová T.

1 Kováč J.

1 Menovsky A.

1 Mihálik M.

1 Señas Pariente A.

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

The Anisotropy of the Electrical Resistivity and Thermal Expansion of Single Crystal DyNi_{5}