Temperature dependences of hyperfine fields at SP-impurities in fcc-cobalt studied by nuclear spin precession following heavy-ion reactions
Abstract
Temperature dependences of magnetic hyperfine fields at Ga, Ge, and As nuclei were measured in face centered cubic Co(fcc-Co) and in body centered cubic Fe(bcc-Fe) in the range from 80 to 1300 K. The fcc-phase was stabilized below the cobalt hcp-fcc phase transition temperature of 690 K by using sponge Co. The hyperfine fields were measured using the time differential perturbed angular distribution (TDPAD) technique after recoil-implantation of suitable isomeric probe nuclei excited by a pulsed heavy ion beam. The object of these measurements was to compare the temperature dependences of the hyperfine fields in these cubic hosts with results obtained in hexagonal close packed Co(hcp-Co), in which giant temperature anomalies were previously reported. Using the same in-beam TDPAD technique, temperature dependences of the fields at Sn and Cd in Co were also measured.
- Publication:
-
Ph.D. Thesis
- Pub Date:
- December 1980
- Bibcode:
- 1980PhDT........58S
- Keywords:
-
- Cobalt;
- Face Centered Cubic Lattices;
- Heavy Ions;
- Impurities;
- Ion Implantation;
- Nuclear Spin;
- Temperature Effects;
- Body Centered Cubic Lattices;
- Close Packed Lattices;
- Ion Beams;
- Magnetic Fields;
- Magnetization;
- Radiation Damage;
- Transition Temperature;
- Solid-State Physics