Interface disorder and layer transitions in Ising thin films

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چکیده

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Interface disorder and layer transitions in Ising thin films

The disorder and layer transitions in the interface between an Ising spin-1/2 film denoted (n), and an Ising spin-1 film denoted (m), are studied using Monte Carlo simulations. The effects of both an external magnetic field, acting only on the spin-1/2 film , and a crystal magnetic field acting only on the spin-1 film, are studied for a fixed temperature and selected values of the coupling cons...

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A ug 2 00 5 Interface disorder and layer transitions in Ising thin films

The disorder and layer transitions in the interface between an Ising spin-1/2 film denoted (n), and an Ising spin-1 film denoted (m), are studied using Monte Carlo simulations. The effects of both an external magnetic field, acting only on the spin-1/2 film , and a crystal magnetic field acting only on the spin-1 film, are studied for a fixed temperature and selected values of the coupling cons...

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Ising thin films with modulations and surface defects

Properties of magnetic films are studied in the framework of Ising models. In particular, we discuss critical phenomena of ferromagnetic Ising films with straight lines of magnetic adatoms and straight steps on the surface as well as phase diagrams of the axial next–nearest neighbour Ising (ANNNI) model for thin films exhibiting various spatially modulated phases.

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We study the spin-1 Ising model with bilinear and biquadratic exchange interactions and single-ion crystal field. In addition to the four usual phases: disordered DIS, ferromagnetic FER, antiquadrupolar AQU and ferrimagnetic FRI, we found three new phases in the case of a thin magnetic film, namely: the sublattice A non magnetic phase NMA, the sublattice B non magnetic phase NMB and the global ...

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ژورنال

عنوان ژورنال: physica status solidi (b)

سال: 2006

ISSN: 0370-1972,1521-3951

DOI: 10.1002/pssb.200541142