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Dislocation Motion in Secondary Slip Planes in Alkali Halide Crystals at Room Temperature
Author(s) -
Yu. Gutmanas E.,
Nadgornyi E. M.
Publication year - 1970
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.19700380227
Subject(s) - halide , slip (aerodynamics) , dislocation , materials science , irradiation , shear stress , critical resolved shear stress , shear (geology) , alkali metal , crystallography , condensed matter physics , composite material , chemistry , physics , thermodynamics , inorganic chemistry , shear rate , viscosity , nuclear physics , organic chemistry
Dislocation motion in {100} 〈110〉 and {111} 〈110〉 secondary slip systems has been observed in NaCl, KCl, KBr, KI, and RbI crystals at room temperature by means of a special loading and etch‐pit technique. The observed reduction in the difference between the critical resolved shear stress τ s{110} in the primary slip system {110} 〈110〉 and τ s in the secondary slip system in the above sequence of crystals demonstrates the increasing influence of multiplication processes of dislocations on dislocation motion in the primary system. A considerably lower effect of γ‐irradiation on τ s{100} and τ s{111} has been found in comparison with that of τ s{110} . Possible reasons are discussed briefly.