TDPAC study of 140Ce local susceptibility in the Kondo insulator system CeNi1 − xCoxSn

✍ Scribed by V.V Krishnamurthy; A.A Tulapurkar; S.N Mishra; S.K Malik; D.T Adroja; B.D Rainford

• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 183 KB
• Volume: 223-224
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/0921-4526(96)00094-4

✦ Synopsis

We have measured the local magnetic susceptibility (•loc) of t4°Ce in the alloy system CeNil -xCo~Sn for x = 0, 0.3 and 0.38 in the range 28-300 K using TDPAC method. The results show strongly reduced g~o¢ values in all the alloys. Using the Coqblin Schrieffer model we obtain the Kondo temperatures TK to be 90, 112 and 170 K for x = 0.0, 0.38 and 0.30, respectively. In addition, for x = 0.38, the data show an abrupt drop in the Z~oc value at 48 K indicating a first-order valence transition for Ce ions.