Phase boundaries of antiferromagnetic Cs2[FeCl5(H 2O)]
Open Access
- 1 January 1978
- journal article
- Published by EDP Sciences in Journal de Physique Lettres
- Vol. 39 (16) , 279-281
- https://doi.org/10.1051/jphyslet:019780039016027900
Abstract
The zero-field susceptibility of Cs2[FeCl5(H 2O)] may be fit by the 3-D Heisenberg, S = 5/2, high-temperature series expansion, with J/k = — 0.31 K. Portions of the magnetic phase boundaries have been measured, with the result that HSF(0) = 11.5 kOe, the bicritical point occurs at ∼ 6.3 K and ∼ 14.7 kOe, and HA/HE = 1.2 × 10-2. Since Tc(0) = 6.57 K, which is an order of magnitude lower than that of either MnF2 or RbMnF3, this is an important new example of the 3-D Heisenberg antiferromagnetKeywords
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