Magnetic properties of Sm(Co,Cu) alloys. II. Coercivity mechanism

Journal Article · Tue Jun 01 04:00:00 EDT 1976 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.322989· OSTI ID:7365506

Perkins, R S; Bernasconi, J; Wiesmann, H J

A theoretical interpretation of the hard-magnetic properties of Sm(Co,Cu)/sub z/ compounds with 56.0, two simplified models are considered. The first is a one-dimensional system consisting of microscopic precipitates of an Sm/sub 2/Co/sub 17/-like phase lying in a lattice-strained matrix of Sm(Co,Cu)/sub 5/. The pinning-type coercivity and its angular and temperature dependences are considered. The second model evaluates the interaction between macroscopic Sm/sub 2/Co/sub 17/-like precipitates and an Sm(Co,Cu)/sub 6/-type matrix typical of composition z>6.0. The effect upon the demagnetization curves is illustrated. Despite their simple nature, both models allow order of magnitude agreement with experimental results. In addition a quantitative understanding of the influence of the various features involved is provided. (AIP)

• Research Organization: Brown Boveri Research Center, CH-5401 Baden, Switzerland
• OSTI ID: 7365506
• Journal Information: J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 47:6; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360100* -- Metals & Alloys
ALLOYS
COBALT ALLOYS
COBALT BASE ALLOYS
COERCIVE FORCE
COPPER ALLOYS
FERROMAGNETISM
HARDENING
MAGNETISM
MAGNETIZATION
MAGNETS
MATHEMATICAL MODELS
PERMANENT MAGNETS
PRECIPITATION
PRECIPITATION HARDENING
RARE EARTH ALLOYS
SAMARIUM ALLOYS
SEPARATION PROCESSES
TEMPERATURE DEPENDENCE