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Elastic Interaction between Nanocrystals and a Crystalline Matrix: CuCl in NaCl
Author(s) -
Weber H.J.,
Lüghausen K.,
Haselhoff M.,
Siegert H.
Publication year - 1995
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.2221910111
Subject(s) - crystallinity , doping , materials science , annealing (glass) , lattice constant , nanocrystal , condensed matter physics , lattice (music) , nonlinear system , relaxation (psychology) , crystallography , chemistry , nanotechnology , composite material , diffraction , optics , physics , optoelectronics , quantum mechanics , acoustics , psychology , social psychology
It is demonstrated that doping of NaCl with CuCl increases the elastic constants of NaCl and modifies their dependence on temperature. The changes are significantly larger than estimated for a statistical distribution of the doping material. The crystallinity of embedded CuCl is considered to be responsible for additional elastic effects. This conclusion is verified by studying different kinds of annealing effects. The elastic interaction between guest and host crystals is interpreted as a relaxation of the NaCl lattice which closes the spatial gap caused by the lattice misfit. This results in a spontaneous strain which modifies the elastic constants due to the contribution of nonlinear terms.