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The shape of order in glasses
Author(s) -
Chechetkina E. A.
Publication year - 2012
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201200421
Subject(s) - hypervalent molecule , bond , wavefront , order (exchange) , range (aeronautics) , interpretation (philosophy) , chemical bond , bond order , state (computer science) , materials science , bond length , chemistry , physics , optics , mathematics , computer science , crystallography , composite material , quantum mechanics , crystal structure , algorithm , finance , economics , programming language , reagent
The chemical bond approach to the glassy state is discussed. It is based on two concepts: Ovshinsky's idea of bond option as a necessary condition for amorphization, and Dembovsky's notions about hypervalent bonds (HVB) as alternative bonding state responsible for glass specificity and glass formation at all. The third idea is self‐organization of HVBs in the form of a bond wave, which provides an interconnected interpretation of three structural levels: short‐range order that is different at around HVB and far outside it, medium‐range order in the wavefronts populated with HVB, and long‐range order due to the bond wave itself. Experimental evidences and practical consequences of the bond‐wave picture are discussed.