INTERNAL FIELDS AT LOW TEMPERATURES IN CoPd ALLOYS

Journal Article · Mon Jan 15 00:00:00 EST 1962 · Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D

DOI:https://doi.org/10.1103/PhysRev.125.490· OSTI ID:4814610

Nagle, D E; Craig, P P; Barrett, P; Cochran, D R.F.; Olsen, C E; Taylor, R D

The hyperfine splitting of the 14.4-kev gamma line in Fe/sup 57/ was measured for a series of sources, each containing Co/sup 57/ activity doped into a host lattice of CoPd. Although Pd itself is not ferromagnetic, the alloys with Co are all ferromagnetic, with Curie temperatures ranging from 1404 deg K for pure Co down to 130 deg K for a 3% Co alloy. The internal field associated with the hyperfine splitting is a function of temperature for a given alloy; however, at temperatures small compared to the Curie temperature, each source shows very nearly the same internal field, namely - 308 kgauss. The relationship of this behavior to current theories of the internal field in Fe and to the nature of ferromagnetism in CoPd is discussed. (auth)

• Research Organization: Los Alamos Scientific Lab., N. Mex.
• NSA Number: NSA-16-009317
• OSTI ID: 4814610
• Journal Information: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, Vol. Vol: 125; Other Information: Orig. Receipt Date: 31-DEC-62
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

PHYSICS
COBALT 57
COBALT ALLOYS
CURIE POINT
ENERGY LEVELS
ENERGY RANGE
FERROMAGNETIC MATERIALS
GAMMA RADIATION
GAMMA SOURCES
HYPERFINE STRUCTURE
IRON 57
KEV RANGE
LATTICES
MAGNETIC FIELDS
MEASURED VALUES
PALLADIUM ALLOYS
TEMPERATURE