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TEM Investigation of Dislocations in RNi 2 B 2 C (R = Y, Tb, Ho, Er, Y 0.6 Tb 0.4 , Er 0.8 Tb 0.2 )
Author(s) -
YangBitterlich W.,
Krämer U.
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 - 10.1002/1521-4079(200004)35:4<369::aid-crat369>3.0.co;2-m
Subject(s) - materials science , crystallography , chemistry
To evaluate the influence of different rare earth metals on dislocation type and stacking fault occurrence in RNi2B2C compounds samples with R = Y, Tb, Ho, Er, Y 0.6 Tb 0.4 and Er 0.8 Tb 0.2 were investigated. As a result of the TEM analysis the parameter decisive for the lattice defects in these compounds is not the type of components but the annealing treatment of the samples. In well homogenized material the dominant Burgers vector of perfect dislocations was <100] and stacking faults are hardly found. In inhomogeneous samples the dominant Burgers vector was <110] and the perfect dislocations often lie in the planes of the numerous stacking faults. In both types of materials the experimental results hint at the existence of two different slip systems.