Properties of some mean-field-like approximations for the triangular Ising antiferromagnet

Thermodynamic Properties of the Triangular-Lattice Ising Antiferromagnet in a Uniform Magnetic Field

Using both the exact enumeration method (microcanonical transfer matrix) for small systems (up to 9 9 lattices) and the Wang-Landau Monte Carlo algorithm for large systems (up to 30 30 lattices), we obtain the exact and approximate densities of states g(M;E), as a function of magnetization M and exchange energy E, for the triangular-lattice Ising model in the presence of an external uniform mag...

XY universality of the stacked triangular Ising antiferromagnet

Histogram analysis of Monte-Carlo simulation results of the Ising antiferro-magnet on a stacked triangular lattice are reported. Finite-size scaling estimates for critical exponents suggest XY universality. This result supports earlier predictions based on symmetry arguments and is in contrast with a recent suggestion of a new universality class by Bunker et al.

Field-induced Kosterlitz-Thouless transition in the zero-temperature triangular Ising antiferromagnet.

Some Properties of Mean Field Solutions for a Disordered Ising Model

We study a disordered d-dimensional Ising model deened by random couplings and quenched free energy. After some general results we concentrate on mean eld solutions. For these we prove that the critical value of is the same as in the Ising case. A particular study is devoted to the mean eld solutions for fully frustrated conngurations: using a Schwartz inequality for frustrated cubes we nd the ...

modification of nanoclay for improving the physico-mechanical properties of dental adhesives

هدف اصلی این مطالعه تهیه یک سامانه نوین چسب عاجی دندانی بر پایه نانورس پیوند شده با پلی متاکریلیک اسید، نانورس پیوند شده با پلی اکریلیک اسید، مخلوط نانوسیلیکا و نانورس پیوند شده با پلی متاکریلیک اسید، مخلوط نانوسیلیکا و نانورس پیوند شده با پلی اکریلیک اسید و نانورس پیوند شده با کیتوسان اصلاح شده با گلایسیدیل متاکریلات است. پیوند پلی متاکریلیک اسید و پلی اکریلیک اسید بر ری سطح نانورس در حضور و ...