Phase Transitions in Magnets with Competing Exchange Interactions

Valery I. Belokon; Olga I. Dyachenko

doi:10.4028/www.scientific.net/SSP.215.119

Paper Titles

Percolation Effects in Composites Superconductor – Ferromagnetic Half-Metal
p.100

Magnetoelastic Resonance in Media with the Inhomogeneous Coupling Parameter
p.105

Hyperfine Interactions on Magnetic Ions Nuclei in Titanates
p.109

Thermodynamic and Relaxation Processes near Curie Point in Gadolinium
p.113

Phase Transitions in Magnets with Competing Exchange Interactions
p.119

Magnetic Phase Diagrams of Tm₂Fe_19-xMn_x and Tm₂Fe_17+δ Systems
p.123

Spin Glass State in Iron-Doped Bi₂Fe_0.128Te_2.844Se_0.145 Topological Insulator
p.127

First Principles Calculations of Magnetic Exchange Parameters of Fe-Mn-Al Heusler Alloys
p.131

Crystal Structure and Coercivity of Electrodeposited Nickel Films
p.139

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Phase Transitions in Magnets with Competing Exchange Interactions

Abstract:

In this investigations the systems of the nanoparticles with competing exchange interactions are considered. The critical concentrations and possible types of magnetic states of particles in the case of direct exchange and RKKY interaction in the framework of the random interaction field method are determined. It is observed that in magnetic materials with the competition of the direct and indirect exchanges changing the type of ordering is possible at the change in the intensity of the indirect exchange under the influence of external factors.