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Title: Synthesis and characterization of the heavy-fermion compound CePtAl 4Ge 2

Here, we report the synthesis of the Ce-based quaternary compound CePtAl 4Ge 2 that crystallizes in the trigonal structure (space group R 3¯m, 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 CePtAl 4Ge 2 (LaPtAl 4Ge 2) is in a single, homogeneous phase. Magnetic susceptibility, electrical resistivity, and heat capacity measurements of CePtAl 4Ge 2 show that it exhibits antiferromagnetic behavior below 2.3 K. The magnetic susceptibility for the magnetic field applied perpendicular (χ ab) and parallel (χ c) to the crystalline c-axis is very anisotropic, and the susceptibility ratio (χ abc) reaches a maximum value of 10, indicating that the spin easy axis is within the Ce plane. The entropy recovered at T N is consistent with the doublet ground state of the crystal field split J = 5/2 multiplet of Ce 3+ ions.
Authors:
ORCiD logo [1] ; ORCiD logo [2] ; ORCiD logo [2] ; ORCiD logo [2] ; ORCiD logo [2] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ; ORCiD logo [2] ;  [1]
  1. Sungkyunkwan Univ., Suwon (South Korea)
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Report Number(s):
LA-UR-17-28376
Journal ID: ISSN 0925-8388; TRN: US1800815
Grant/Contract Number:
AC52-06NA25396
Type:
Accepted Manuscript
Journal Name:
Journal of Alloys and Compounds
Additional Journal Information:
Journal Volume: 738; Journal Issue: C; Journal ID: ISSN 0925-8388
Publisher:
Elsevier
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
USDOE Office of Science (SC). Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Material Science
OSTI Identifier:
1415422

Shin, Soohyeon, Rosa, Priscila Ferrari Silveira, Ronning, Filip, Thompson, Joe David, Scott, Brian Lindley, Lee, Sangyun, Jang, Harim, Jung, Soon -Gil, Yun, Eunbhin, Lee, Hyoyoung, Bauer, Eric Dietzgen, and Park, Tuson. Synthesis and characterization of the heavy-fermion compound CePtAl4Ge2. United States: N. p., Web. doi:10.1016/j.jallcom.2017.12.180.
Shin, Soohyeon, Rosa, Priscila Ferrari Silveira, Ronning, Filip, Thompson, Joe David, Scott, Brian Lindley, Lee, Sangyun, Jang, Harim, Jung, Soon -Gil, Yun, Eunbhin, Lee, Hyoyoung, Bauer, Eric Dietzgen, & Park, Tuson. Synthesis and characterization of the heavy-fermion compound CePtAl4Ge2. United States. doi:10.1016/j.jallcom.2017.12.180.
Shin, Soohyeon, Rosa, Priscila Ferrari Silveira, Ronning, Filip, Thompson, Joe David, Scott, Brian Lindley, Lee, Sangyun, Jang, Harim, Jung, Soon -Gil, Yun, Eunbhin, Lee, Hyoyoung, Bauer, Eric Dietzgen, and Park, Tuson. 2017. "Synthesis and characterization of the heavy-fermion compound CePtAl4Ge2". United States. doi:10.1016/j.jallcom.2017.12.180.
@article{osti_1415422,
title = {Synthesis and characterization of the heavy-fermion compound CePtAl4Ge2},
author = {Shin, Soohyeon and Rosa, Priscila Ferrari Silveira and Ronning, Filip and Thompson, Joe David and Scott, Brian Lindley and Lee, Sangyun and Jang, Harim and Jung, Soon -Gil and Yun, Eunbhin and Lee, Hyoyoung and Bauer, Eric Dietzgen and Park, Tuson},
abstractNote = {Here, we report the synthesis of the Ce-based quaternary compound CePtAl4Ge2 that crystallizes in the trigonal structure (space group R 3¯m, 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.},
doi = {10.1016/j.jallcom.2017.12.180},
journal = {Journal of Alloys and Compounds},
number = C,
volume = 738,
place = {United States},
year = {2017},
month = {12}
}