Thermal and magnetic properties of CeGe 2

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

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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 languageEnglish
Pages (from-to)8117-8119
Number of pages3
JournalJournal of Applied Physics
Volume91
Issue number10 I
DOIs
Publication statusPublished - May 15 2002

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Lin, C. L., Yuen, T., Riseborough, P., Huang, X. Y., & Li, J. (2002). Thermal and magnetic properties of CeGe 2 . Journal of Applied Physics, 91(10 I), 8117-8119. https://doi.org/10.1063/1.1456430