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- W1948921 abstract "Recent diffraction experiments have revealed the existence of long-range order in the semiconductor III-V ternary alloy ${mathrm{Al}}_{mathrm{x}}$${mathrm{Ga}}_{1mathrm{ensuremath{-}}mathrm{x}}$As at temperatures up to 800 ifmmode^circelsetextdegreefi{}C. By combining a self-consistent first-principles local-density calculation of the parameters that describe the interatomic interactions with a mean-field analysis of an Ising-type Hamiltonian model, we have analyzed the thermodynamic stability of ordered and disordered structures. Our calculation shows that the ordered configuration is thermodynamically stable, i.e., has a lower free energy, at the experimental conditions. It thus seems that strain effects are not necessary to account for the observed order." @default.
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- W1948921 date "1987-07-15" @default.
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- W1948921 title "Long-range order in<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant=normal>Al</mml:mi></mml:mrow><mml:mrow><mml:mi mathvariant=normal>x</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math><mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant=normal>Ga</mml:mi></mml:mrow><mml:mrow><mml:mn>1</mml:mn><mml:mi mathvariant=normal>−</mml:mi><mml:mi …" @default.
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- W1948921 doi "https://doi.org/10.1103/physrevb.36.1526" @default.
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