Magnetic anomalies and spin-glass-like behavior in Ce 2CuGe 6

J. J. Lu; T. S. Mo; K. J. Gan; J. F. Chou; M. K. Lee

doi:10.1007/s10948-011-1158-9

Magnetic anomalies and spin-glass-like behavior in Ce ₂CuGe ₆

J. J. Lu, T. S. Mo, K. J. Gan, J. F. Chou, M. K. Lee

Instrument Center

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

4 Citations (Scopus)

Abstract

A Ce-based intermetallic compound Ce ₂CuGe ₆ and its La analogue La ₂CuGe ₆ were synthesized and examined by X-ray powder diffraction, electrical resistivity, magnetic susceptibility, X-ray absorption spectrum and specific-heat measurements. The results reveal that Ce ₂CuGe ₆ is an antiferromagnetic Kondo-lattice compound with T _N 15 K. The effective moment deduced from paramagnetic region is 2.58 μ _B per cerium ion, which is close to localized Ce ³⁺ free ion in ²F _5/2 state. X-ray absorption measurement also precluded the existence of an intermediate valence state. The magnetic entropy calculated from heat capacity specific-heat measurement suggested a doublet ground state. In addition, we also observed a spin-glass-like behavior in this material. The spin-glass-like behavior might be due to the complex interplay between magnetic interactions.

Original language	English
Pages (from-to)	1991-1995
Number of pages	5
Journal	Journal of Superconductivity and Novel Magnetism
Volume	24
Issue number	6
DOIs	https://doi.org/10.1007/s10948-011-1158-9
Publication status	Published - 2011 Aug

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Access to Document

10.1007/s10948-011-1158-9

Cite this

@article{5e6f0bc5f3874742be893ae01f08adb2,

title = "Magnetic anomalies and spin-glass-like behavior in Ce 2CuGe 6 ",

abstract = "A Ce-based intermetallic compound Ce 2CuGe 6 and its La analogue La 2CuGe 6 were synthesized and examined by X-ray powder diffraction, electrical resistivity, magnetic susceptibility, X-ray absorption spectrum and specific-heat measurements. The results reveal that Ce 2CuGe 6 is an antiferromagnetic Kondo-lattice compound with T N 15 K. The effective moment deduced from paramagnetic region is 2.58 μ B per cerium ion, which is close to localized Ce 3+ free ion in 2F 5/2 state. X-ray absorption measurement also precluded the existence of an intermediate valence state. The magnetic entropy calculated from heat capacity specific-heat measurement suggested a doublet ground state. In addition, we also observed a spin-glass-like behavior in this material. The spin-glass-like behavior might be due to the complex interplay between magnetic interactions.",

author = "Lu, {J. J.} and Mo, {T. S.} and Gan, {K. J.} and Chou, {J. F.} and Lee, {M. K.}",

note = "Funding Information: Acknowledgements This work was supported by the National Science Council of the Republic of China under Contract No. NSC 97-2112-M-168-001-MY2.",

year = "2011",

month = aug,

doi = "10.1007/s10948-011-1158-9",

language = "English",

volume = "24",

pages = "1991--1995",

journal = "Journal of Superconductivity and Novel Magnetism",

issn = "1557-1939",

publisher = "Springer New York",

number = "6",

}

TY - JOUR

T1 - Magnetic anomalies and spin-glass-like behavior in Ce 2CuGe 6

AU - Lu, J. J.

AU - Mo, T. S.

AU - Gan, K. J.

AU - Chou, J. F.

AU - Lee, M. K.

N1 - Funding Information: Acknowledgements This work was supported by the National Science Council of the Republic of China under Contract No. NSC 97-2112-M-168-001-MY2.

PY - 2011/8

Y1 - 2011/8

N2 - A Ce-based intermetallic compound Ce 2CuGe 6 and its La analogue La 2CuGe 6 were synthesized and examined by X-ray powder diffraction, electrical resistivity, magnetic susceptibility, X-ray absorption spectrum and specific-heat measurements. The results reveal that Ce 2CuGe 6 is an antiferromagnetic Kondo-lattice compound with T N 15 K. The effective moment deduced from paramagnetic region is 2.58 μ B per cerium ion, which is close to localized Ce 3+ free ion in 2F 5/2 state. X-ray absorption measurement also precluded the existence of an intermediate valence state. The magnetic entropy calculated from heat capacity specific-heat measurement suggested a doublet ground state. In addition, we also observed a spin-glass-like behavior in this material. The spin-glass-like behavior might be due to the complex interplay between magnetic interactions.

AB - A Ce-based intermetallic compound Ce 2CuGe 6 and its La analogue La 2CuGe 6 were synthesized and examined by X-ray powder diffraction, electrical resistivity, magnetic susceptibility, X-ray absorption spectrum and specific-heat measurements. The results reveal that Ce 2CuGe 6 is an antiferromagnetic Kondo-lattice compound with T N 15 K. The effective moment deduced from paramagnetic region is 2.58 μ B per cerium ion, which is close to localized Ce 3+ free ion in 2F 5/2 state. X-ray absorption measurement also precluded the existence of an intermediate valence state. The magnetic entropy calculated from heat capacity specific-heat measurement suggested a doublet ground state. In addition, we also observed a spin-glass-like behavior in this material. The spin-glass-like behavior might be due to the complex interplay between magnetic interactions.

UR - http://www.scopus.com/inward/record.url?scp=79960556839&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79960556839&partnerID=8YFLogxK

U2 - 10.1007/s10948-011-1158-9

DO - 10.1007/s10948-011-1158-9

M3 - Article

AN - SCOPUS:79960556839

SN - 1557-1939

VL - 24

SP - 1991

EP - 1995

JO - Journal of Superconductivity and Novel Magnetism

JF - Journal of Superconductivity and Novel Magnetism

IS - 6

ER -

Magnetic anomalies and spin-glass-like behavior in Ce ₂CuGe ₆

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this