Effect of additions of praseodymium and bismuth oxides on the properties of barium hexaferrites

Journal Article · Thu Aug 01 04:00:00 EDT 1985 · Sov. Powder Metall. Met. Ceram. (Engl. Transl.); (United States)

OSTI ID:6123480

Kirichok, P P; Garmash, V Y; Verezhak, O F; Voronina, N B

Among oxide permanent magnets, of greatest practical interest are those made of barium hexaferrite. Because of its high constant of uniaxial anisotropy, a barium ferrite can be employed for producing permanent magnets of large coercive force. The formation of important technical properties in barium ferrites is strongly affected by their production technology, in particular, the addition of oxides, such as those or bismuth and some rare-earth elements. The goal of this work was to study the effect of bismuth and praseodymium on the parameters of the static hysteresis loop, magnetic microstructure, and electronic configuration of iron ions in the BaO.nFe/sub 2/O/sub 3/ (5.0 less than or equal tonless than or equal to6.0) system. It is determined that the changes induced in the crystallostructural parameters, magnetic microstructure, and electronic spectrum of a barium ferrite by the addition of praseodymium and bismuth oxides to the ferrite powder charge control to a large extent the formation of the magnetic energy level.

• Research Organization: Ivano-Frankovsk State Pedagogical Institute
• OSTI ID: 6123480
• Journal Information: Sov. Powder Metall. Met. Ceram. (Engl. Transl.); (United States), Journal Name: Sov. Powder Metall. Met. Ceram. (Engl. Transl.); (United States) Vol. 24:3; ISSN SPMCA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360101* -- Metals & Alloys-- Preparation & Fabrication
360104 -- Metals & Alloys-- Physical Properties
ADDITIVES
ALKALINE EARTH METAL COMPOUNDS
ANISOTROPY
BARIUM COMPOUNDS
BISMUTH COMPOUNDS
BISMUTH OXIDES
CHALCOGENIDES
CHEMICAL COMPOSITION
CHEMICAL PREPARATION
CRYSTAL STRUCTURE
CRYSTALLOGRAPHY
ELECTRICAL PROPERTIES
ELECTRONIC STRUCTURE
FERRIMAGNETIC MATERIALS
FERRITES
IRON COMPOUNDS
IRON OXIDES
MAGNETIC MATERIALS
MAGNETIC PROPERTIES
MAGNETS
MATERIALS
METALLURGICAL EFFECTS
METALLURGY
MICROSTRUCTURE
OXIDES
OXYGEN COMPOUNDS
PERMANENT MAGNETS
PHYSICAL PROPERTIES
POWDER METALLURGY
PRASEODYMIUM COMPOUNDS
PRASEODYMIUM OXIDES
RARE EARTH COMPOUNDS
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS