Method of increasing magnetostrictive response of rare earth-iro

Details Method of increasing magnetostrictive response of rare earth-iro Method of increasing magnetostrictive response of rare earth-iro

1987-10-20

1989-04-04

Sheehan, John P.

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

148108, H01F 102

Patent

active

048183040

ABSTRACT:
This invention comprises a method of increasing the magnetostrictive response of rare earth-iron (RFe) magnetostrictive alloy rods by a thermal-magnetic treatment. The rod is heated to a temperature above its Curie temperature, viz. from 400.degree. to 600.degree. C.; and, while the rod is at that temperature, a magnetic field is directionally applied and maintained while the rod is cooled, at least below its Curie temperature.

REFERENCES:
patent: 4152178 (1979-05-01), Malekzadeh et al.
patent: 4274888 (1981-06-01), Schnurbus et al.
Verhoeven, J. D., Gibson, E. D., McMasters, O. D., Baker, H. H., "The Growth of Single Crystol Terfenol-D Crystals", Met. Trans., 118A:223-231 (1987).

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