Computer Science
Scientific paper
Jun 1961
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1961natur.190..999k&link_type=abstract
Nature, Volume 190, Issue 4780, pp. 999-1000 (1961).
Computer Science
2
Scientific paper
ANOMALOUS behaviour of magnesium in gallium arsenide has been reported by Edmond1 and Weisberg et al.2, who found that magnesium behaves as a donor impurity, differing in this respect from zinc, cadmium and mercury. Edmond incorporated 5.7 × 1019 atoms/cm.3 of magnesium in his specimens and found it to be a donor impurity; however, Weisberg found magnesium to be a donor when present at low concentration, but an acceptor at levels higher than 4.4 × 1018 atoms/cm.3. The experimental methods employed by Weisberg are not known to me; however, Edmond prepared his specimens by heating gallium arsenide and magnesium together in sealed silica tubes for 1 hr. at 1,551° K., a small quantity of arsenic being added to prevent decomposition.
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