TY - JOUR
T1 - Crystallization to Fine TbFe2 Grains and Magnetic Properties in Rapidly Quenched Fe-Tb-B Alloys
AU - Kikuchi, S.
AU - Tanaka, T.
AU - Sugimoto, S.
AU - Okada, M.
AU - Homma, M.
AU - Arai, K.
PY - 1993/11
Y1 - 1993/11
N2 - 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 803K, 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 5mol% Cr.
AB - 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 803K, 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 5mol% Cr.
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U2 - 10.1109/TJMJ.1993.4565749
DO - 10.1109/TJMJ.1993.4565749
M3 - Article
AN - SCOPUS:9344250341
SN - 0882-4959
VL - 8
SP - 807
EP - 811
JO - IEEE translation journal on magnetics in Japan
JF - IEEE translation journal on magnetics in Japan
IS - 11
ER -