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Synthesis and characterization of the heavy-fermion compound CePtAl4Ge2

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Title
Synthesis and characterization of the heavy-fermion compound CePtAl4Ge2
Author(s)
Shin, Soohyeon; Rosa, Priscila F. S.; Ronning, Filip; Thompson, Joe D.; Scott, Brian L.; Lee, Sangyun; Jang, Harim; Jung, Soon -Gil; Eunbhin Yun; Hyoyoung Lee; Bauer, Eric D.; Park, Tuson
Publication Date
2018-03
Journal
JOURNAL OF ALLOYS AND COMPOUNDS, v.738, pp.550 - 555
Publisher
ELSEVIER SCIENCE SA
Abstract
We report the synthesis of the Ce-based quaternary compound CePtAl4Ge2 that crystallizes in the trigonal structure (space group Rm, 166) with unit cell parameters, a = 4.1995(5) Å, c = 31.851(7) Å, and γ = 120°. Powder X-ray diffraction and energy dispersive X-ray spectroscopy show that CePtAl4Ge2 (LaPtAl4Ge2) is in a single, homogeneous phase. Magnetic susceptibility, electrical resistivity, and heat capacity measurements of CePtAl4Ge2 show that it exhibits antiferromagnetic behavior below 2.3 K. The magnetic susceptibility for the magnetic field applied perpendicular (χab) and parallel (χc) to the crystalline c-axis is very anisotropic, and the susceptibility ratio (χab/χc) reaches a maximum value of 10, indicating that the spin easy axis is within the Ce plane. The entropy recovered at TN is consistent with the doublet ground state of the crystal field split J = 5/2 multiplet of Ce3+ ions.
URI
https://pr.ibs.re.kr/handle/8788114/12112
DOI
10.1016/j.jallcom.2020.155145
ISSN
0925-8388
Appears in Collections:
Center for Integrated Nanostructure Physics(나노구조물리 연구단) > 1. Journal Papers (저널논문)
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