𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Valence transition in CeNi1−xCoxSn alloys

✍ Scribed by D.T. Adroja; B.D. Rainford

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
145 KB
Volume
199-200
Category
Article
ISSN
0921-4526

No coin nor oath required. For personal study only.

✦ Synopsis

The temperature dependence of the susceptibility of CeNit _~Co~Sn alloys ~hows a dramatic change with Co concentration x. CeNiSn shows a Curie-Weiss behaviour for l(T) between 50 and 300 K. For x = 0.34, x(T) exhibits a broad maximum at 95 K, while for x = 0.35 it shows a sharp drop at 75 K. There is a marked contraction of the volume at the same temperature. On increasing x to 0.4 the anomaly moves to 40 K, but disappears for x > 0.42. We ascribe this behaviour to a first-order ,,alence transition, like that observed in the compound YbInCu4.

📜 SIMILAR VOLUMES

TDPAC study of 140Ce local susceptibilit
TDPAC study of 140Ce local susceptibility in the Kondo insulator system CeNi1 − xCoxSn
✍ V.V Krishnamurthy; A.A Tulapurkar; S.N Mishra; S.K Malik; D.T Adroja; B.D Rainfo 📂 Article 📅 1996 🏛 Elsevier Science 🌐 English ⚖ 183 KB

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

Energy gap suppression by alloying in Ce
Energy gap suppression by alloying in CeNi1−xPtxSn
✍ S. Nishigori; H. Goshima; T. Suzuki; T. Fujita; G. Nakamoto; T. Takabatake; H. F 📂 Article 📅 1993 🏛 Elsevier Science 🌐 English ⚖ 206 KB

The specific heat C of CeNi~ ~PtxSn has been measured at temperatures T between 1.3 and 60 K. With increasing Pt concentration x from 0 to 0.2, the ratio C/T at 1.5 K recovers from a reduced value of 0.10J/K 2 mol due to the gapping (x = 0) to an enhanced value of 0.34 J/K 2 mol (x = 0.2). This gap

A theoretical study of the valence trans
A theoretical study of the valence transition in Sm1 −xMxS alloys
✍ I. Aveline; J. R. Iglesias-Sicardi 📂 Article 📅 1979 🏛 Springer US 🌐 English ⚖ 457 KB

We present a theoretical model to explain the valence transitions of Sm in Sml-xMxS alloys, where M is a transition metal (e.g., Y or La). The f-level of Sm is described as a zero-width band with a finite Coulomb repulsion U, hybridized with the d band of the alloy, which is treated in the coherent

Surface valence transition in YbxIn1−xCu
Surface valence transition in YbxIn1−xCu2
✍ S. Ogawa; S. Suga; M. Taniguchi; M. Fujisawa; A. Fujimori; T. Shimizu; H. Yasuok 📂 Article 📅 1988 🏛 Elsevier Science 🌐 English ⚖ 383 KB