Magneto-optical study of the magnetic phase diagram of the dilute metamagnet FepMg1-pCl2
- 14 June 1977
- journal article
- Published by IOP Publishing in Journal of Physics C: Solid State Physics
- Vol. 10 (11) , L333-L335
- https://doi.org/10.1088/0022-3719/10/11/012
Abstract
The mixed phase region of the magnetic phase diagram of FepMg1-pCl2 (p=1.00-0.71) has been mapped by a direct optical method. The tricritical temperature falls with increasing dilution by magnesium and is extrapolated to zero at p approximately 0.6, close to the percolation limit for a plane triangular lattice rather than the three-dimensional analogue, despite the essential three-dimensional nature of the metamagnetic transition. In contrast, the tricritical field tends to a finite value as p decreases.Keywords
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