The influence of Y dilution on the crystalline electric field part of the point-contact spectra of Van Vleck paramagnet PrNi 5

• Published in: Physica. B, Condensed matter Vol. 218; no. 1; pp. 46 - 49
• Main Authors: Bystrenová, E., Reiffers, M., Blanco, J.A., Flachbart, K.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 1996
• ISSN: 0921-4526; 1873-2135
• DOI: 10.1016/0921-4526(95)00555-2

We report on the study of the influence of Y dilution on the crystalline electric field (CEF) in the Van Vleck paramagnet PrNi 5 using point-contact (PC) spectroscopy. PC spectra of Pr 1− x Y x Ni 5 compounds ( x = 0,0.02,0.05, 0.1 and 0.2) in the ballistic regime have been measured. A shift of the main CEF peak (Γ → Γ 5 2) situated at about 4.2 meV for x = 0 to 5.1 meV for x = 0.2 is observed. This shift is in agreement with that obtained from susceptibility measurements in this system. The asymmetry in the d V/d I dependences of all heterocontacts could be explained by the model taking into account the difference in effective masses of conduction electrons.