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Short range order of amorphous Mg60Cu30Y10 was investigated by x-ray and neutron diffraction, Cu and Y K-edge x-ray absorption fine structure measurements, and the reverse Monte Carlo simulation technique. We found that Mg-Mg and Mg-Cu nearest neighbor distances are very similar to values found in crystalline Mg2Cu. The Cu-Y coordination number is 1.1±0.2, and the Cu-Y distance is ~4% shorter than the sum of atomic radii, suggesting that attraction between Cu and Y plays an important role in stabilizing the glassy state. Thermal stability and structure evolution upon annealing were also studied by differential scanning calorimetry and in situ x-ray powder diffraction. The alloy shows a glass transition and three crystallization events, the first and dominant one at 456  K corresponding to eutectic crystallization of at least three phases: Mg2Cu and most likely cubic MgY and CuMgY. ©2007 The American Physical SocietyPaper id:: 05420

physical review b

Atomic structure of glassy<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mi mathvariant="normal">Mg</mml:mi><mml:mn>60</mml:mn></mml:msub><mml:msub><mml:mi mathvariant="normal">Cu</mml:mi><mml:mn>30</mml:mn></mml:msub><mml:msub><mml:mi mathvariant="normal">Y</mml:mi><mml:mn>10</mml:mn></mml:msub></mml:mrow></mml:math>investigated with EXAFS, x-ray and neutron diffraction, and reverse Monte Carlo simulations

Atomic structure of glassyMg60Cu30Y10investigated with EXAFS, x-ray and neutron diffraction, and reverse Monte Carlo simulations