TY  - JOUR
AU  - Fu, Z.
AU  - Kögerler, P.
AU  - Rücker, U.
AU  - Su, Y.
AU  - Mittal, R.
AU  - Brückel, T.
TI  - An approach to the magnetic ground state of the molecular magnet {Mo72Fe30}
JO  - New journal of physics
VL  - 12
SN  - 1367-2630
CY  - [Bad Honnef]
PB  - Dt. Physikalische Ges.
M1  - PreJuSER-12182
SP  - 083044
PY  - 2010
N1  - Record converted from VDB: 12.11.2012
AB  - The nature of the magnetic ground state of the spin-frustrated molecular magnet {Mo72Fe30} is studied using polarized neutron scattering and specific heat methods. The magnetic scattering cross section up to 2.30 angstrom(-1) has been determined by means of diffuse neutron scattering with xyz polarization analysis at temperatures from 1.5 to 100 K. The spin correlations observed at 1.5 K agree well with the simulation based on the three-sublattice spin configuration model for {Mo72Fe30}. The specific heat of {Mo72Fe30} has been measured from 60 mK to 15 K under zero external magnetic field. The energy gaps, 0.09(1) and 0.64(1) meV, identified by the Schottky-type anomalies in the specific heat data are in reasonable agreement with the low-lying magnetic excitations predicted by the quantum rotational band model for the three-sublattice spin configuration model. Therefore, our experimental study provides strong support that the three-sublattice spin configuration model is a good approach to the magnetic ground state of {Mo72Fe30}.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000281279900003
DO  - DOI:10.1088/1367-2630/12/8/083044
UR  - https://juser.fz-juelich.de/record/12182
ER  -