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. Rainford

doi:10.1016/0921-4526(96)00094-4

TDPAC study of ¹⁴⁰Ce local susceptibility in the Kondo insulator system CeNi_1-xCo_xSn

V. V. Krishnamurthy, A. A. Tulapurkar, S. N. Mishra, S. K. Malik, D. T. Adroja, B. D. Rainford

Physics

Tata Institute of Fundamental Research

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

We have measured the local magnetic susceptibility (χ_loc) of ¹⁴⁰Ce in the alloy system CeNi_1-xCo_xSn for x = 0, 0.3 and 0.38 in the range 28-300 K using TDPAC method. The results show strongly reduced χ_loc values in all the alloys. Using the Coqblin-Schrieffer model we obtain the Kondo temperatures T_K 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 χ_loc value at 48 K indicating a first-order valence transition for Ce ions.

Original language	English
Pages (from-to)	262-264
Number of pages	3
Journal	Physica B: Condensed Matter
Volume	223-224
Issue number	1-4
DOIs	https://doi.org/10.1016/0921-4526(96)00094-4
Publication status	Published - 2 Jun 1996

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1016/0921-4526(96)00094-4

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title = "TDPAC study of 140Ce local susceptibility in the Kondo insulator system CeNi1-xCoxSn",

abstract = "We have measured the local magnetic susceptibility (χloc) of 140Ce in the alloy system CeNi1-xCoxSn for x = 0, 0.3 and 0.38 in the range 28-300 K using TDPAC method. The results show strongly reduced χloc 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 χloc value at 48 K indicating a first-order valence transition for Ce ions.",

author = "Krishnamurthy, {V. V.} and Tulapurkar, {A. A.} and Mishra, {S. N.} and Malik, {S. K.} and Adroja, {D. T.} and Rainford, {B. D.}",

year = "1996",

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T1 - TDPAC study of 140Ce local susceptibility in the Kondo insulator system CeNi1-xCoxSn

AU - Krishnamurthy, V. V.

AU - Tulapurkar, A. A.

AU - Mishra, S. N.

AU - Malik, S. K.

AU - Adroja, D. T.

AU - Rainford, B. D.

PY - 1996/6/2

Y1 - 1996/6/2

N2 - We have measured the local magnetic susceptibility (χloc) of 140Ce in the alloy system CeNi1-xCoxSn for x = 0, 0.3 and 0.38 in the range 28-300 K using TDPAC method. The results show strongly reduced χloc 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 χloc value at 48 K indicating a first-order valence transition for Ce ions.

AB - We have measured the local magnetic susceptibility (χloc) of 140Ce in the alloy system CeNi1-xCoxSn for x = 0, 0.3 and 0.38 in the range 28-300 K using TDPAC method. The results show strongly reduced χloc 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 χloc value at 48 K indicating a first-order valence transition for Ce ions.

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U2 - 10.1016/0921-4526(96)00094-4

DO - 10.1016/0921-4526(96)00094-4

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SN - 0921-4526

VL - 223-224

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JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

IS - 1-4

ER -

TDPAC study of ¹⁴⁰Ce local susceptibility in the Kondo insulator system CeNi_1-xCo_xSn

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