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Block Lattices with Asymmetric Interaction Forces
Author(s) -
Stoyanova V.,
Nenow D.
Publication year - 2000
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/(sici)1521-4079(200002)35:2<143::aid-crat143>3.0.co;2-x
Subject(s) - lattice (music) , block (permutation group theory) , orientation (vector space) , interaction energy , chemical physics , crystal structure , crystallography , chemistry , lattice energy , monomer , condensed matter physics , materials science , molecule , physics , polymer , geometry , mathematics , organic chemistry , acoustics
A series of 2D block lattices constructed by identical building elements and having asymmetric interaction forces is proposed as a generalisation of the well‐known Kossel crystal. Different polymorph structures are created depending on the mutual orientation of the neighbour elements. The lattice energy for some of them is calculated at low temperatures using the repeatable step of blocks (monomers, dimers, quadrumers). A variety of “surface” structures (including alternating “surfaces”) is established. The corresponding coexisting equilibrium forms are determined following the method of Stranski and Kaischew. The thermodynamic stability of these polymorph structures is discussed. An orientation order/disorder surface transition is expected to appear as a novel phenomenon at high temperatures.