The surface magnetization of the semi-infinite Ising ferromagnet

Using a general mean-field theory that includes nontrivial fluctuation effects through the use of the Kirkwood approximation, we have studied the effects of a pure surface on the magnetic properties of the semi-infinite simple cubic spin 1 2 Ising ferromagnet. We have found that the temperature depe...

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Veröffentlicht in:	Surface science 1996-04, Vol.349 (2), p.216-220
1. Verfasser:	ILKOVIC, V
Format:	Artikel
Sprache:	eng
Schlagworte:	Approximation theory Calculations Classical spin models Condensed matter: electronic structure, electrical, magnetic, and optical properties Exact sciences and technology Ferromagnetic materials General theory and models of magnetic ordering Ising models Magnetic phenomena Magnetic properties Magnetic properties and materials Magnetic properties of surface, thin films and multilayers Magnetization Mathematical models Phase transitions Physics Surface magnetism Surface thermodynamics Thermal effects Thermodynamics
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Zusammenfassung:	Using a general mean-field theory that includes nontrivial fluctuation effects through the use of the Kirkwood approximation, we have studied the effects of a pure surface on the magnetic properties of the semi-infinite simple cubic spin 1 2 Ising ferromagnet. We have found that the temperature dependence of the surface magnetization, when the surface coupling enhancement Δ S is greater than a certain critical value Δ c S, has an infinite slope. Is the first-order pha on the surface?
ISSN:	0039-6028 1879-2758
DOI:	10.1016/0039-6028(95)01064-5