TY - JOUR
T1 - Magnetic and thermal properties of cubic SmCu4X compounds (x = Ag, Au and Pd)
AU - Zhang, Shuai
AU - Tayama, Takashi
AU - Mizushima, Toshio
AU - Kuwai, Tomohiko
AU - Isikawa, Yosikazu
PY - 2011/7
Y1 - 2011/7
N2 - Measurements of magnetization M(H), susceptibility χ(T), electrical resistivity ρ(T), and specific heat C(T) are performed on a new system SmCu4X with X = Ag, Au and Pd. For all the three compounds, χ(T) in paramagnetic state does not exhibit Curie-Weiss behavior. Whereas χ(T) for the compounds with X = Ag and Au shows an antiferromagnetic ordering at 5.5 and 3.6 K, respectively, SmCu4Pd behaves as a ferromagnet with TC = 31 K. Sm ions appear to be near trivalent in the three compounds. The magnetic field dependence of C(T) around the transition temperature is analyzed qualitatively by molecular field theory for the three compounds. For SmCu4Au, C(T) is insensitive to magnetic field and a large value of C/T, 500 mJ/mol K2, remains at the zero-temperature limit in external fields of up to 8 T.
AB - Measurements of magnetization M(H), susceptibility χ(T), electrical resistivity ρ(T), and specific heat C(T) are performed on a new system SmCu4X with X = Ag, Au and Pd. For all the three compounds, χ(T) in paramagnetic state does not exhibit Curie-Weiss behavior. Whereas χ(T) for the compounds with X = Ag and Au shows an antiferromagnetic ordering at 5.5 and 3.6 K, respectively, SmCu4Pd behaves as a ferromagnet with TC = 31 K. Sm ions appear to be near trivalent in the three compounds. The magnetic field dependence of C(T) around the transition temperature is analyzed qualitatively by molecular field theory for the three compounds. For SmCu4Au, C(T) is insensitive to magnetic field and a large value of C/T, 500 mJ/mol K2, remains at the zero-temperature limit in external fields of up to 8 T.
KW - CEF
KW - Electrical resistivity
KW - Magnetization
KW - Mean-field theory
KW - SmCuX
KW - Specific heat
UR - http://www.scopus.com/inward/record.url?scp=80052408398&partnerID=8YFLogxK
U2 - 10.1143/JPSJS.80SA.SA076
DO - 10.1143/JPSJS.80SA.SA076
M3 - 学術論文
AN - SCOPUS:80052408398
SN - 0031-9015
VL - 80
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
IS - SUPPL. A
M1 - SA076
ER -