Magnetic and transport studies on R3Pt23Si11 (R=La and Ce) compounds with dilute rare earth content

Kundaliya, Darshan C. ; Malik, S. K. (2003) Magnetic and transport studies on R3Pt23Si11 (R=La and Ce) compounds with dilute rare earth content Physical Review B, 67 (13). 132411_1-132411_3. ISSN 0163-1829

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Official URL: http://prb.aps.org/abstract/PRB/v67/i13/e132411

Related URL: http://dx.doi.org/10.1103/PhysRevB.67.132411

Abstract

Magnetic susceptibility, electrical resistivity, and low temperature heat capacity measurements have been carried out on R3Pt23Si11 (R=La and Ce) compounds in which the rare earth content is only ~8 mole %. The La compound is a Pauli paramagnet down to 1.8 K while the susceptibility of the Ce compound shows a Curie-Weiss behavior with μeff=2.48μB and θP=-4K. The specific heat of the Ce compound shows a large upturn below 0.6 K, indicative of the onset of magnetic ordering in this compound. The electronic specific heat coefficient, γ, is found to be 19.2 mJ/mole K per formula unit for the La compound. The electrical resistivity of these compounds is typical of metallic systems. No Kondo-like anomaly is seen in the resistivity of Ce3Pt23Si11. Superconductivity, most likely associated with an impurity phase, is observed in La3Pt23Si11 at 1.7 K.

Item Type:Article
Source:Copyright of this article belongs to American Physical Society.
ID Code:23263
Deposited On:25 Nov 2010 09:32
Last Modified:06 Jun 2011 11:33

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