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ID 33939
file
creator
Tamura, Ryuji
Muro, Yuji
Hiroto, Takanobu
Yaguchi, Hiroshi
Beutier, G.
NDC
Physics
abstract
Electrical resistivity, specific heat, magnetic susceptibility, and magnetization of the crystalline approximant Cd6Sm are investigated in a temperature range 1.8-300 K. Both structural and magnetic transitions are clearly evidenced. A sharp structural phase transition is observed at Tc = 179 K in the electrical resistivity as well as in the specific heat, which is attributed to orientational ordering of the Cd4 tetrahedron located at the center of the icosahedral cluster. In addition, three successive magnetic transitions are found at TM1 = 12.5, TM2 = 10.2, and TM3 = 6.5 K. The anomaly at TM1 is attributed to an antiferromagnetic transition, whereas those at TM2 and TM3 are to ferrimagnetic transitions. The observation of the ferrimagnetic orders indicates that (pseudo) icosahedra made of localized Sm spins have a nonzero net magnetic moment, and the moments of the magnetic clusters form a long-range magnetic order.
journal title
Physical Review B
volume
Volume 85
issue
Issue 1
start page
014203
date of issued
2012
publisher
American Physical Society
issn
1098-0121
ncid
publisher doi
language
eng
nii type
Journal Article
HU type
Journal Articles
DCMI type
text
format
application/pdf
text version
publisher
rights
(c) 2012 American Physical Society
relation url
department
Graduate School of Advanced Sciences of Matter