Magnetoresistivity of CeCu5 In0.6 M0.4 alloys, M = Al or Ga.

M. B. Tchoula Tchokonté; P. de V. du Plessis; A. M. Strydom

doi:10.1016/j.jmmm.2006.10.074

Magnetoresistivity of CeCu₅ In_0.6 M_0.4 alloys, M = Al or Ga.

M. B. Tchoula Tchokonté, P. de V. du Plessis, A. M. Strydom

Physics

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

Abstract

Magnetoresistivity (MR) isotherm measurements of CeCu₅ In_0.6 Al_0.4 and CeCu₅ In_0.6 Ga_0.4 alloys down to low temperatures in fields up to 8 T are presented. A negative MR and single-ion Kondo-like behavior is observed at all temperatures. The results are analyzed on the basis of calculations by Andrei and Schlottmann for the Bethe-ansatz solution in the context of the Coqblin-Schrieffer model. The analyses yield Kondo temperatures of T_K = 10 ± 2 K and 20 ± 2 K and effective moments for the Kondo ion of μ_K = 0.062 ± 0.006 μ_B and 0.107 ± 0.008 μ_B, respectively, for the CeCu₅ In_0.6 Al_0.4 and CeCu₅ In_0.6 Ga_0.4 alloys. The scaling of the data with the Bethe-ansatz formulation of the single-ion MR is presented.

Original language	English
Pages (from-to)	e33-e34
Journal	Journal of Magnetism and Magnetic Materials
Volume	310
Issue number	2 SUPPL. PART 1
DOIs	https://doi.org/10.1016/j.jmmm.2006.10.074
Publication status	Published - Mar 2007

Keywords

CeCu In M (M = Al or Ga)
Kondo alloys
Magnetoresistivity

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Access to Document

10.1016/j.jmmm.2006.10.074

Cite this

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title = "Magnetoresistivity of CeCu5 In0.6 M0.4 alloys, M = Al or Ga.",

abstract = "Magnetoresistivity (MR) isotherm measurements of CeCu5 In0.6 Al0.4 and CeCu5 In0.6 Ga0.4 alloys down to low temperatures in fields up to 8 T are presented. A negative MR and single-ion Kondo-like behavior is observed at all temperatures. The results are analyzed on the basis of calculations by Andrei and Schlottmann for the Bethe-ansatz solution in the context of the Coqblin-Schrieffer model. The analyses yield Kondo temperatures of TK = 10 ± 2 K and 20 ± 2 K and effective moments for the Kondo ion of μK = 0.062 ± 0.006 μB and 0.107 ± 0.008 μB, respectively, for the CeCu5 In0.6 Al0.4 and CeCu5 In0.6 Ga0.4 alloys. The scaling of the data with the Bethe-ansatz formulation of the single-ion MR is presented.",

keywords = "CeCu In M (M = Al or Ga), Kondo alloys, Magnetoresistivity",

author = "{Tchoula Tchokont{\'e}}, {M. B.} and {du Plessis}, {P. de V.} and Strydom, {A. M.}",

year = "2007",

month = mar,

doi = "10.1016/j.jmmm.2006.10.074",

language = "English",

volume = "310",

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journal = "Journal of Magnetism and Magnetic Materials",

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T1 - Magnetoresistivity of CeCu5 In0.6 M0.4 alloys, M = Al or Ga.

AU - Tchoula Tchokonté, M. B.

AU - du Plessis, P. de V.

AU - Strydom, A. M.

PY - 2007/3

Y1 - 2007/3

N2 - Magnetoresistivity (MR) isotherm measurements of CeCu5 In0.6 Al0.4 and CeCu5 In0.6 Ga0.4 alloys down to low temperatures in fields up to 8 T are presented. A negative MR and single-ion Kondo-like behavior is observed at all temperatures. The results are analyzed on the basis of calculations by Andrei and Schlottmann for the Bethe-ansatz solution in the context of the Coqblin-Schrieffer model. The analyses yield Kondo temperatures of TK = 10 ± 2 K and 20 ± 2 K and effective moments for the Kondo ion of μK = 0.062 ± 0.006 μB and 0.107 ± 0.008 μB, respectively, for the CeCu5 In0.6 Al0.4 and CeCu5 In0.6 Ga0.4 alloys. The scaling of the data with the Bethe-ansatz formulation of the single-ion MR is presented.

AB - Magnetoresistivity (MR) isotherm measurements of CeCu5 In0.6 Al0.4 and CeCu5 In0.6 Ga0.4 alloys down to low temperatures in fields up to 8 T are presented. A negative MR and single-ion Kondo-like behavior is observed at all temperatures. The results are analyzed on the basis of calculations by Andrei and Schlottmann for the Bethe-ansatz solution in the context of the Coqblin-Schrieffer model. The analyses yield Kondo temperatures of TK = 10 ± 2 K and 20 ± 2 K and effective moments for the Kondo ion of μK = 0.062 ± 0.006 μB and 0.107 ± 0.008 μB, respectively, for the CeCu5 In0.6 Al0.4 and CeCu5 In0.6 Ga0.4 alloys. The scaling of the data with the Bethe-ansatz formulation of the single-ion MR is presented.

KW - CeCu In M (M = Al or Ga)

KW - Kondo alloys

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