Transport Properties of CeCo_{12}B_6 in Vicinity of Phase Transition

• Authors: Y. Skorokhod , Z. Arnold , M. Míšek , J. Kamarád , O. Isnard , H. Mayot
• Languages of publication: EN

Abstracts

EN

Study of resistivity and specific heat on CeCo_{12}B_6 compound was performed in a temperature range 2.5-300 K. The specific heat exhibits pronounced λ-type anomaly in the vicinity of the Curie temperature T_C. Using the Debye-Einstein model the following parameters were obtained: the Debye temperature θ_D = 185 K, coefficient of the electron specific heat γ_{el} = 115 mJ/mol K. The parabolic temperature dependence of resistivity ρ(T) = ρ_0 + A_ρT^2 was observed below T_C in agreement with ferromagnetic state. Comparison of dρ/dT(T) with C_M(T) allows to confirm their similar character, accordingly to theory of critical behavior.

Keywords

EN

75.30.Kz; 75.40.-s; 72.15.Eb

Discipline

• 75.40.-s: Critical-point effects, specific heats, short-range order(for equilibrium properties near critical points, see 64.60.F-; for dynamical critical phenomena, see 64.60.Ht)
• 75.30.Kz: Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.)(for ferroelectric phase transitions, see 77.80.B-; for superconductivity phase diagrams, see 74.25.Dw)
• 72.15.Eb: Electrical and thermal conduction in crystalline metals and alloys

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2008
• Volume: 113
• Issue: 1
• Pages: 259-262

Dates

published

2008-01

received

2007-07-09

Contributors

author

Y. Skorokhod

• Institute of Physics AS CR v.v.i., Na Slovance 2, 182 21, Prague 8, Czech Republic

author

Z. Arnold

• Institute of Physics AS CR v.v.i., Na Slovance 2, 182 21, Prague 8, Czech Republic

author

M. Míšek

• Institute of Physics AS CR v.v.i., Na Slovance 2, 182 21, Prague 8, Czech Republic

author

J. Kamarád

• Institute of Physics AS CR v.v.i., Na Slovance 2, 182 21, Prague 8, Czech Republic

author

O. Isnard

• Institut Néel, CNRS/Univ. J. Fourier, BP166x, 38042 Grenoble cedex, France

author

H. Mayot

• Institut Néel, CNRS/Univ. J. Fourier, BP166x, 38042 Grenoble cedex, France

References

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• 2. O. Isnard, unpublished results
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• 8. M.E. Fisher, J.S. Langer, Phys. Rev. Lett. 20, 665 (1968)

Identifiers

DOI

10.12693/APhysPolA.113.259