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Titolo:
On the interplay of magnetic and molecular forces in Curie-Weiss ferrofluid models
Autore:
Georgii, HO; Zagrebnov, V;
Indirizzi:
Univ Munich, Math Inst, D-80333 Munich, Germany Univ Munich Munich Germany D-80333 h, Math Inst, D-80333 Munich, Germany Univ Mediterranee, CPT, Dept Phys, CNRS, F-13288 Marseille 09, France UnivMediterranee Marseille France 09 CNRS, F-13288 Marseille 09, France
Titolo Testata:
JOURNAL OF STATISTICAL PHYSICS
fascicolo: 1-2, volume: 93, anno: 1998,
pagine: 79 - 107
SICI:
0022-4715(199810)93:1-2<79:OTIOMA>2.0.ZU;2-P
Fonte:
ISI
Lingua:
ENG
Soggetto:
INTERNAL QUANTUM STATES; PHASE-TRANSITIONS; FLUIDS; SEPARATION; SYSTEM; FIELD;
Keywords:
classical continuous system; first-order phase transition; mean-field; tricritical; large deviations; maximum entropy principle;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
33
Recensione:
Indirizzi per estratti:
Indirizzo: Georgii, HO Univ Munich, Math Inst, D-80333 Munich, Germany Univ Munich Munich Germany D-80333 , D-80333 Munich, Germany
Citazione:
H.O. Georgii e V. Zagrebnov, "On the interplay of magnetic and molecular forces in Curie-Weiss ferrofluid models", J STAT PHYS, 93(1-2), 1998, pp. 79-107

Abstract

We consider a mean-field continuum model of classical particles in Rd WithIsing or Heisenberg spins. The interaction has two ingredients, a ferromagnetic spin coupling and a spin-independent molecular force. We show that a feedback between these forces gives rise to a first-order phase transition with simultaneous jumps of particle density and magnetization per particle,either at the threshold of ferromagnetic order or within the ferromagneticregion. If the direct particle interaction alone already implies a phase transition, then the additional spin coupling leads to an even richer phase diagram containing triple (or higher order) points.

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Documento generato il 20/09/20 alle ore 04:43:25