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Deformation behaviour of single crystals of GaP in uniaxial compression
Author(s) -
Paufler P.,
Retzlaff U.
Publication year - 1989
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/crat.2170240713
Subject(s) - crystal twinning , materials science , slip (aerodynamics) , deformation (meteorology) , condensed matter physics , yield (engineering) , compression (physics) , crystallography , composite material , uniaxial tension , stress (linguistics) , thermodynamics , chemistry , physics , microstructure , ultimate tensile strength , linguistics , philosophy
Abstract LEC n‐GaP:S single crystals were deformed in uniaxial compression parallel [321] and [110] direction. Plastic deformation by (111) slip has been observed between 511 °C and 717 °C. Indications for (111) twinning were obtained. Yield stress exhibits activation enthalpies U = Q ( m + 2) and stress exponents m of U 321 = (0.54 ± 0.05) eV, U 110 = = (0.46 ± 0.05) eV, m = 1.1 ± 0.2 and m = 3 ± 1, respectively.