Article

Fluctuation effects in ultralow temperature easy-plane magnets with dipole interaction

E. ZubovPhysicotechnical Institute, Academy of Sciences of the Ukrainian SSR, DonetskV. N. KrivoruchkoPhysicotechnical Institute, Academy of Sciences of the Ukrainian SSR, Donetsk

Soviet Journal of Low Temperature Physicsjournal1987en

ABI

Abstract

High-temperature expansion of free energy is obtained by taking into account the spin fluctuations for an ultralow temperature easy-plane magnet with comparable values of exchange, dipole and one-ion interactions. The dependence of the thermodynamic properties, including Curie temperature, on system parameters is analyzed. It is shown that spin fluctuations may inhibit or even completely prevent the long-range magnetic ordering predicted by the molecular field theory.

Topics

Physics of Superconductivity and Magnetism Magnetic Properties of Alloys Superconducting Materials and Applications

Identifiers

DOI: 10.1063/10.0031822

Citations and references

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