Concentration Phase Transitions in Two-Sublattice Magnets

Abstract:

Phase transitions and critical phenomena are investigated within a two-sublattice model. In the framework of the random fields with the exchange interaction method the system of equations is obtained. It allows us to establish conditions under which magnetic phase transitions are possible. Critical concentration of ferromagnetic atoms which is necessary for the existence of ferromagnetic, ferrimagnetic and antiferromagnetic phases is determined.

• Periodical: Advanced Materials Research (Volumes 557-559)
• Pages: 731-734
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.557-559.731
• Online since: July 2012
• Authors: Valery I. Belokon, Konstantin V. Nefedev, Olga I. Dyachenko
• Keywords: Equilibrium Thermodynamics and Statistical Mechanics, Exchange Interaction, Ising Models, Magnetic Phenomena (Phase Transitions), Magnetic Properties of Condensed Matter, Mean Field Theory, Order-Disorder Phase Transition

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