Accession Number:

AD0627281

Title:

MOSSBAUER STUDY OF CO57 (FE57) IN COBALTOUS OXIDE AT HIGH PRESSURE,

Descriptive Note:

Corporate Author:

ILLINOIS UNIV URBANA DEPT OF CHEMISTRY AND CHEMICAL ENGINEERING

Report Date:

1965-01-01

Pagination or Media Count:

11.0

Abstract:

An account is given of a room temperature study of the Mossbauer effect of Co57 Fe57 in cobaltous oxide up to pressures of about 250 kbar. At atmospheric pressure the Mossbauer spectrum consists of an unsplit line characteristic of divalent Fe57 in a paramagnetic, cubic environment. As pressure is applied to the sample, the spectrum unfolds into a hyperfine pattern characteristic of divalent Fe57 in a magnetic, noncubic environment. This study is consistent with the fact that the Neel temperature of cobaltous oxide 291K at atmospheric pressure increases with pressure. The pressure dependence of the internal magnetic field, electric field gradient and isomer shift are discussed. Author

Subject Categories:

  • Nuclear Physics and Elementary Particle Physics
  • Solid State Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE