Accession Number : AD0286796

Title :   RECOVERY OF DEFECTS FROM 78 K TO 300 K IN CADMIUM ELONGATED AT 78 K

Corporate Author : MARTIN CO BALTIMORE MD RESEARCH INST FOR ADVANCED STUDIES

Personal Author(s) : PEIFFER,H.R. ; STEVENSON,F.R.

Report Date : SEP 1962

Pagination or Media Count : 1

Abstract : The motion of defects in Cd deformed at 77 K was studied from 77 to 300 K using electrical resistivity measured at the deformation temperature as an index of the defect concentration. There appear to be 3 stages of recovery, the first 2 centered at 98 and 138 K with activation energies of 0.21 ev and 0.35 ev respectively. The latter recovery stage shows a similarity to recovery found in cold-worked Cu whereas the former stage is similar to Cu only in that the number of jumps the defect makes before annihilation is the same. A more complicated recovery stage occurs from 228 to 258 K with an energy increasing from 0.70 to 0.89 ev. Above this latter stage, the resistance rises due to recrystallization and reorientation of the crystal. (Author)

Descriptors :   *CADMIUM, *CRYSTALS, BIBLIOGRAPHIES, ENERGY, LOW TEMPERATURE RESEARCH, RESISTANCE (ELECTRICAL), WIRE

Distribution Statement : APPROVED FOR PUBLIC RELEASE