Crystallization to fine TbFe[sub 2] grains and magnetic properties in rapidly quenched Fe-Tb-B alloys

Journal Article · Mon Nov 01 04:00:00 EST 1993 · IEEE Translation Journal on Magnetics in Japan (Institute of Electrical and Electronics Engineers); (United States)

DOI:https://doi.org/10.1109/TJMJ.1993.4565749· OSTI ID:7274453

Kikuchi, S; Tanaka, T; Sugimoto, S; Okada, M; Homma, M; Arai, K ^[1]

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1. Tohoku Univ., Sendai (Japan)

The magnetic properties of Fe-Tb-B alloys with fine TbFe2 grains crystallized from an amorphous state were investigated. Amorphous samples with boron contents in excess of 5 mol%, situated on the line connecting Fe2Tb and FeB in a composition diagram, were prepared by rapid quenching. An amorphous Fe65Tb30B5 alloy began to crystallize into a single TbFe2 phase at 803 K, and a microstructure with a grain size of about 10 nm was obtained by heating at this crystallization temperature for one hour. The fine TbFe2 phase acted to lower the coercive force. Substitution of 5 mol% Mo in Fe65Tb30B5 led to the smaller grain size and also to a lower coercive force. On the other hand, the magnetostriction of Fe-Tb-B alloys under an applied field of 1.28 MA/m was increased by replacing Fe with 5 mol% Ti or 5 mol% Cr.

• OSTI ID: 7274453
• Journal Information: IEEE Translation Journal on Magnetics in Japan (Institute of Electrical and Electronics Engineers); (United States), Journal Name: IEEE Translation Journal on Magnetics in Japan (Institute of Electrical and Electronics Engineers); (United States) Vol. 8:11; ISSN 0882-4959; ISSN ITJJER
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
360104 -- Metals & Alloys-- Physical Properties
ALLOY SYSTEMS
ALLOYS
BORON ALLOYS
CRYSTALLIZATION
DATA
EXPERIMENTAL DATA
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
LAVES PHASES
MAGNETIC PROPERTIES
NUMERICAL DATA
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
RARE EARTH ALLOYS
TERBIUM ALLOYS
TERNARY ALLOY SYSTEMS