Kondo behaviour of the solid solution (Ce1-xLax)PtGa

被引：6

作者：

Ragel, F. C. ^{[1
,2
,3
]}

du Plessis, P. de V. ^{[1
,2
]}

Strydom, A. M. ^{[1
]}

机构：

[1] Univ Johannesburg, Dept Phys, ZA-2006 Auckland Pk, South Africa

[2] Univ Witwatersrand, Sch Phys, ZA-2050 Johannesburg, South Africa

[3] S Eastern Univ, Dept Phys Sci, Oluvil, Sri Lanka

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2010年 / 71卷 / 12期

基金：

新加坡国家研究基金会;

关键词：

Magnetic materials; Magnetic properties; Specific heat; Transport properties; ELECTRICAL-RESISTIVITY; SINGLE-CRYSTAL; LATTICE; ALLOYS; SYSTEMS; CEPTGA; HEAT; MAGNETORESISTANCE; IMPURITIES; TRANSITION;

D O I：

10.1016/j.jpcs.2010.08.010

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The solid solution (Ce1-xLax)PtGa has been studied through X-ray diffraction magnetization (sigma(B)) magnetic susceptibility (/(T)) electrical resistivity (rho(T)) magnetoresistivity (MR) and heat capacity (C(T)) measurements The Neel temperature (T-N = 3 3 K) for CePtGa is lowered upon La substitution as observed from /(T) and rho(T) measurements The Kondo temperature T-K as calculated from MR measurements is comparable to TN and also decreases with La substitution The volume dependence of T-K is in accordance with the compressible Kondo lattice model and a Doniach diagram of the results is presented C-p(T) measurements are presented for CePtGa Ce-0 La-2(0) 8PtGa and LaPtGa and the results are discussed in terms of the electronic and magnetic properties Other features of interest are anomalies in rho(T) and C-p(T) due to crystalline electric field effects and metamagnetism as observed in sigma(B) studies for samples with 0 <= x <= 0 3 (C) 2010 Elsevier Ltd All rights reserved

引用

页码：1694 / 1701

页数：8

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