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  2. Potts model - Wikipedia

    en.wikipedia.org/wiki/Potts_model

    that is, the set of all possible strings where k+1 spins match up exactly to a given, specific set of values ξ 0, ..., ξ k. Explicit representations for the cylinder sets can be gotten by noting that the string of values corresponds to a q -adic number , however the natural topology of the q-adic numbers is finer than the above product topology.

  3. Solid solution - Wikipedia

    en.wikipedia.org/wiki/Solid_solution

    a solid solution mixes with others to form a new solution The phase diagram in the above diagram displays an alloy of two metals which forms a solid solution at all relative concentrations of the two species. In this case, the pure phase of each element is of the same crystal structure, and the similar properties of the two elements allow for ...

  4. Spin structure - Wikipedia

    en.wikipedia.org/wiki/Spin_structure

    When a manifold carries a spin C structure at all, the set of spin C structures forms an affine space. Moreover, the set of spin C structures has a free transitive action of H 2 (M, Z). Thus, spin C-structures correspond to elements of H 2 (M, Z) although not in a natural way.

  5. Classical Heisenberg model - Wikipedia

    en.wikipedia.org/wiki/Classical_Heisenberg_model

    The general mathematical formalism used to describe and solve the Heisenberg model and certain generalizations is developed in the article on the Potts model.; In the continuum limit the Heisenberg model (2) gives the following equation of motion

  6. Spin crossover - Wikipedia

    en.wikipedia.org/wiki/Spin_crossover

    Spin crossover is sometimes referred to as spin transition or spin equilibrium behavior. The change in spin state usually involves interchange of low spin (LS) and high spin (HS) configuration. [2] Spin crossover is commonly observed with first row transition metal complexes with a d 4 through d 7 electron configuration in an octahedral ligand ...

  7. Metal spinning - Wikipedia

    en.wikipedia.org/wiki/Metal_spinning

    Metal spinning, also known as spin forming or spinning or metal turning most commonly, is a metalworking process by which a disc or tube of metal is rotated at high speed and formed into an axially symmetric part. [1] Spinning can be performed by hand or by a CNC lathe.

  8. Classical XY model - Wikipedia

    en.wikipedia.org/wiki/Classical_XY_model

    The existence of the thermodynamic limit for the free energy and spin correlations were proved by Ginibre, extending to this case the Griffiths inequality. [3]Using the Griffiths inequality in the formulation of Ginibre, Aizenman and Simon [4] proved that the two point spin correlation of the ferromagnetics XY model in dimension D, coupling J > 0 and inverse temperature β is dominated by (i.e ...

  9. Spin glass - Wikipedia

    en.wikipedia.org/wiki/Spin_glass

    Spin glass when contrasted with a ferromagnet is defined as "disordered" magnetic state in which spins are aligned randomly or without a regular pattern and the couplings too are random. [1] A spin glass should not be confused with a "spin-on glass". The latter is a thin film, usually based on SiO 2, which is applied via spin coating.