Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2010-04-19
Physics
Condensed Matter
Statistical Mechanics
A procedural definition of glass formation viz. "extract specific heat without extracting latent heat" is added on page 2
Scientific paper
Metallic glasses are formed by splat-cooling; this ensures that atomic motions are arrested before the latent heat of solidification can be extracted. Glass is defined as a higher disorder metastable state with arrested kinetics. Arrested kinetics is a defining property of a glass, rather than structural disorder as, e.g., in amorphous silicon [1]. `Magnetic glasses' identified recently possess structural as well as magnetic long-range order, but show relaxation and specific heat as for a structural glass [1]. The values of Tc and Tg in these materials are easily varied by varying the magnetic field H, allowing one to go from metallic glass to glass former like scenario.
Banerjee Alok
Chaddah Praveen
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