Abstract
A two-sublattice Ising model is employed to determine the phase boundary of the FeCl 2 metamagnet for every value of the external pressure. An effective spin hamiltonian is obtained in the λ-ensemble and the competing ferro- and antiferromagnetic exchange interactions depend on external pressure. The Néel temperature and the tricritical point are explicitly determined as a function of pressure in the low and high pressure regions of FeCl 2. We show that the change in the signal of the slope of the line of tricritical points with pressure may be ascribed to the change in the ferromagnetic spin-lattice coupling.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
