MOSSBAUER STUDY OF CO57 (FE57) IN COBALTOUS OXIDE AT HIGH PRESSURE,
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)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1965
- Accession Number
- AD0627281
Entities
People
- C. J. Coston
- H. G. Drickamer
- R. Ingalls
Organizations
- University of Illinois Urbana–Champaign