Thermal and magnetic properties of CeGe 2

C. L. Lin; Tan Yuen; P. Riseborough; X. Y. Huang; Jing Li

doi:10.1063/1.1456430

Thermal and magnetic properties of CeGe ₂

C. L. Lin, Tan Yuen, P. Riseborough, X. Y. Huang, Jing Li

Rutgers University

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

12 Citations (Scopus)

Abstract

The magnetization data measured at low applied fields show that CeGe ₂ undergoes an antiferromagnetic transition at T _N=7K and exhibits a second ferromagnetic transition at T _C=4.3K. As the applied field increases, T _C increases, but T _N is almost unchanged. These two magnetic transitions merge to become a single ferromagnetic transition at a field equal to or larger than 5 kG. This is the first report of an antiferromagnetic transition in CeGe ₂ and the data are significantly different from those previously reported. The high temperature magnetic susceptibility shows the Curie-Weiss behavior and the effective paramagnetic moment is 2.38μ _B indicating that the Ce ions in CeGe ₂ are trivalent. The specific heat data also show anomalies at 4.3 and 7 K associated with two magnetic transitions, respectively. An enhanced electronic specific heat coefficient of γ _HT=120mJ/molK ² is deduced for temperatures above T _N.

Original language	English
Pages (from-to)	8117-8119
Number of pages	3
Journal	Journal of Applied Physics
Volume	91
Issue number	10 I
DOIs	https://doi.org/10.1063/1.1456430
Publication status	Published - May 15 2002

ASJC Scopus subject areas

Physics and Astronomy(all)

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title = "Thermal and magnetic properties of CeGe 2 ",

abstract = "The magnetization data measured at low applied fields show that CeGe 2 undergoes an antiferromagnetic transition at T N=7K and exhibits a second ferromagnetic transition at T C=4.3K. As the applied field increases, T C increases, but T N is almost unchanged. These two magnetic transitions merge to become a single ferromagnetic transition at a field equal to or larger than 5 kG. This is the first report of an antiferromagnetic transition in CeGe 2 and the data are significantly different from those previously reported. The high temperature magnetic susceptibility shows the Curie-Weiss behavior and the effective paramagnetic moment is 2.38μ B indicating that the Ce ions in CeGe 2 are trivalent. The specific heat data also show anomalies at 4.3 and 7 K associated with two magnetic transitions, respectively. An enhanced electronic specific heat coefficient of γ HT=120mJ/molK 2 is deduced for temperatures above T N.",

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T1 - Thermal and magnetic properties of CeGe 2

AU - Lin, C. L.

AU - Yuen, Tan

AU - Riseborough, P.

AU - Huang, X. Y.

AU - Li, Jing

PY - 2002/5/15

Y1 - 2002/5/15

N2 - The magnetization data measured at low applied fields show that CeGe 2 undergoes an antiferromagnetic transition at T N=7K and exhibits a second ferromagnetic transition at T C=4.3K. As the applied field increases, T C increases, but T N is almost unchanged. These two magnetic transitions merge to become a single ferromagnetic transition at a field equal to or larger than 5 kG. This is the first report of an antiferromagnetic transition in CeGe 2 and the data are significantly different from those previously reported. The high temperature magnetic susceptibility shows the Curie-Weiss behavior and the effective paramagnetic moment is 2.38μ B indicating that the Ce ions in CeGe 2 are trivalent. The specific heat data also show anomalies at 4.3 and 7 K associated with two magnetic transitions, respectively. An enhanced electronic specific heat coefficient of γ HT=120mJ/molK 2 is deduced for temperatures above T N.

AB - The magnetization data measured at low applied fields show that CeGe 2 undergoes an antiferromagnetic transition at T N=7K and exhibits a second ferromagnetic transition at T C=4.3K. As the applied field increases, T C increases, but T N is almost unchanged. These two magnetic transitions merge to become a single ferromagnetic transition at a field equal to or larger than 5 kG. This is the first report of an antiferromagnetic transition in CeGe 2 and the data are significantly different from those previously reported. The high temperature magnetic susceptibility shows the Curie-Weiss behavior and the effective paramagnetic moment is 2.38μ B indicating that the Ce ions in CeGe 2 are trivalent. The specific heat data also show anomalies at 4.3 and 7 K associated with two magnetic transitions, respectively. An enhanced electronic specific heat coefficient of γ HT=120mJ/molK 2 is deduced for temperatures above T N.

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