SPIN FRUSTRATION IN Y(SC)MN-2

Authors
MEKATA M ASANO T NAKAMURA H SHIGA M KOJIMA K LUKE GM KEREN A WU WD UEMURA YJ DUNSINGER S GINGRAS M
Citation
M. Mekata et al., SPIN FRUSTRATION IN Y(SC)MN-2, Hyperfine interactions, 104(1-4), 1997, pp. 337-342
Citations number
13
Categorie Soggetti
Physics, Atomic, Molecular & Chemical","Physics, Nuclear","Physics, Condensed Matter
Journal title
Hyperfine interactions → ACNP
ISSN journal
03043843
Volume
104
Issue
1-4
Year of publication
1997
Pages
337 - 342
Database
ISI
SICI code
0304-3843(1997)104:1-4<337:SFIY>2.0.ZU;2-E
Abstract
The relaxation rate of muon polarization of Y0.97Sc0.03Mn2 with a magn etic lattice composed of corner-shared tetrahedrons shows a broad peak around 2.5 K indicating a random spin freezing at low temperatures. T he substitution by nonmagnetic Al atoms for 10% Mn atoms raises the sp in freezing temperature to 45 K. The present work shows clearly that d ue to the strong geometrical frustration, the ground state of the syst em is singlet tetrahedrons mixed with frozen paramagnetic tetrahedrons .