Specific heat of CeNi2Ge2 in wide-range of temperatures

T. Kuwai; M. Takeuchi; T. Tsuchiya; Y. Isikawa; T. Fukuhara

doi:10.1016/j.jmmm.2003.11.061

Specific heat of CeNi₂Ge₂ in wide-range of temperatures

T. Kuwai^*, M. Takeuchi, T. Tsuchiya, Y. Isikawa, T. Fukuhara

^*Corresponding author for this work

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

7 Scopus citations

Abstract

Specific heat up to 200 K from below 1 K for Ce(Ni/Pd)₂Ge ₂ single crystals is presented. The magnetic part of the specific heat for CeNi₂Ge₂ forms two broad peaks around 30 and 150 K. The crystal field excitation with Δ₁ = 200-280K and Δ₂ = 300-380 K is roughly estimated from analysis on the entropy balance under Kondo state with T_K = 30 K. Substitution of Ni-site by Pd makes T_K to reduce and a non-Fermi-liquid characteristics to change into an usual Kondo-type behavior with magnetic ordering at low temperatures beyond 10% substitution.

Original language	English
Pages (from-to)	68-69
Number of pages	2
Journal	Journal of Magnetism and Magnetic Materials
Volume	272-276
Issue number	I
DOIs	https://doi.org/10.1016/j.jmmm.2003.11.061
State	Published - 2004/05

Keywords

CeNiGe
Crystal field
Non-Fermi-liquid
Specific heat

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Access to Document

10.1016/j.jmmm.2003.11.061

Cite this

@article{7aa6adb46b794ab0b1c4b079a8b47705,

title = "Specific heat of CeNi2Ge2 in wide-range of temperatures",

abstract = "Specific heat up to 200 K from below 1 K for Ce(Ni/Pd)2Ge 2 single crystals is presented. The magnetic part of the specific heat for CeNi2Ge2 forms two broad peaks around 30 and 150 K. The crystal field excitation with Δ1 = 200-280K and Δ2 = 300-380 K is roughly estimated from analysis on the entropy balance under Kondo state with TK = 30 K. Substitution of Ni-site by Pd makes TK to reduce and a non-Fermi-liquid characteristics to change into an usual Kondo-type behavior with magnetic ordering at low temperatures beyond 10% substitution.",

keywords = "CeNiGe, Crystal field, Non-Fermi-liquid, Specific heat",

author = "T. Kuwai and M. Takeuchi and T. Tsuchiya and Y. Isikawa and T. Fukuhara",

year = "2004",

month = may,

doi = "10.1016/j.jmmm.2003.11.061",

language = "英語",

volume = "272-276",

pages = "68--69",

journal = "Journal of Magnetism and Magnetic Materials",

issn = "0304-8853",

publisher = "Elsevier B.V.",

number = "I",

}

TY - JOUR

T1 - Specific heat of CeNi2Ge2 in wide-range of temperatures

AU - Kuwai, T.

AU - Takeuchi, M.

AU - Tsuchiya, T.

AU - Isikawa, Y.

AU - Fukuhara, T.

PY - 2004/5

Y1 - 2004/5

N2 - Specific heat up to 200 K from below 1 K for Ce(Ni/Pd)2Ge 2 single crystals is presented. The magnetic part of the specific heat for CeNi2Ge2 forms two broad peaks around 30 and 150 K. The crystal field excitation with Δ1 = 200-280K and Δ2 = 300-380 K is roughly estimated from analysis on the entropy balance under Kondo state with TK = 30 K. Substitution of Ni-site by Pd makes TK to reduce and a non-Fermi-liquid characteristics to change into an usual Kondo-type behavior with magnetic ordering at low temperatures beyond 10% substitution.

AB - Specific heat up to 200 K from below 1 K for Ce(Ni/Pd)2Ge 2 single crystals is presented. The magnetic part of the specific heat for CeNi2Ge2 forms two broad peaks around 30 and 150 K. The crystal field excitation with Δ1 = 200-280K and Δ2 = 300-380 K is roughly estimated from analysis on the entropy balance under Kondo state with TK = 30 K. Substitution of Ni-site by Pd makes TK to reduce and a non-Fermi-liquid characteristics to change into an usual Kondo-type behavior with magnetic ordering at low temperatures beyond 10% substitution.

KW - CeNiGe

KW - Crystal field

KW - Non-Fermi-liquid

KW - Specific heat

UR - http://www.scopus.com/inward/record.url?scp=23044505286&partnerID=8YFLogxK

U2 - 10.1016/j.jmmm.2003.11.061

DO - 10.1016/j.jmmm.2003.11.061

M3 - 学術論文

AN - SCOPUS:23044505286

SN - 0304-8853

VL - 272-276

SP - 68

EP - 69

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

IS - I

ER -