Field-induced three-dimensional magnetic ordering in the spin-gap system
- 1 January 1999
- journal article
- Published by IOP Publishing in Journal of Physics: Condensed Matter
- Vol. 11 (1) , 265-271
- https://doi.org/10.1088/0953-8984/11/1/021
Abstract
The temperature and field variations of the magnetization have been measured for which has a singlet ground state with an excitation gap. It is found that undergoes three-dimensional ordering in magnetic fields. The phase boundaries between the paramagnetic and ordered states are determined for and . The phase boundaries for these field directions coincide when normalized by the g-factor. The excitation gap at zero temperature is re-evaluated as .Keywords
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