TY - JOUR
T1 - Enhancement of Magnetic Properties of Sm(Fe, Co, Ti)12 Melt-Spun Ribbons by Refining Crystallized Grains
AU - Sugimoto, Satoshi
AU - Okada, Masuo
AU - Homma, Motofumi
AU - Kojima, Akihiko
PY - 1991
Y1 - 1991
N2 - Present works describe the improvement of the magnetic properties of Sm(Fe, Ti)12 melt-spun ribbons with ThMn12-type structure. In order to increase the remanence, the Ti content was decreased and the heat treatment temperature and time were lowered and shortened, respectively. As a result, the maximum energy products increases. The (BH)max of 56.8 kJm-3 (7.1 MGOe) was obtained with SmFe11.25Ti0.75 melt-spun ribbons annealed at 770°C for 10 min. This is the highest energy products among reported values on melt-spun ribbons in ternary Sm-Fe-Ti system so far. The Co addition is effective for increasing the saturation magnetization. Sm(Fe0.8Co0.2)11.25Ti0.75 melt-spun ribbon exhibits the high maximum energy products of 67.2 kJm-3 (8.4 MGOe) after annealing at 800°C for 10 min. Microstructural studies indicate that the ribbons consist of fine grains which have the average grain diameter of nearly 40 nm.
AB - Present works describe the improvement of the magnetic properties of Sm(Fe, Ti)12 melt-spun ribbons with ThMn12-type structure. In order to increase the remanence, the Ti content was decreased and the heat treatment temperature and time were lowered and shortened, respectively. As a result, the maximum energy products increases. The (BH)max of 56.8 kJm-3 (7.1 MGOe) was obtained with SmFe11.25Ti0.75 melt-spun ribbons annealed at 770°C for 10 min. This is the highest energy products among reported values on melt-spun ribbons in ternary Sm-Fe-Ti system so far. The Co addition is effective for increasing the saturation magnetization. Sm(Fe0.8Co0.2)11.25Ti0.75 melt-spun ribbon exhibits the high maximum energy products of 67.2 kJm-3 (8.4 MGOe) after annealing at 800°C for 10 min. Microstructural studies indicate that the ribbons consist of fine grains which have the average grain diameter of nearly 40 nm.
KW - (BH)
KW - high remanence
KW - melt-spun ribbons
KW - Sm(Fe, Ti) compounds
KW - the exchange interaction
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U2 - 10.2320/matertrans1989.32.1180
DO - 10.2320/matertrans1989.32.1180
M3 - Article
AN - SCOPUS:0026373634
SN - 0916-1821
VL - 32
SP - 1180
EP - 1183
JO - materials transactions, jim
JF - materials transactions, jim
IS - 12
ER -