Patent ID: 6312530
Filing Date: 2001-11-06
Classification: H01F,H01L

Abstract:
A magnetostrictive material produced by annealing an alloy consisting essentially of an amorphous phase and comprising Fe, Dy, and Tb as primary components, at least one element selected from the group consisting of Ta, Nb, Zr, Hf, V, W, Mo, Si and B and/or at least one element selected from the group consisting of Cr, Al, Ga, Ge, Cu, Au, Ag, Pt, Pd, Os, Ir, and Rh; whereinsaid magnetostrictive material is a compact formed by compacting and sintering a powder of said alloy consisting essentially of the amorphous phase so as to precipitate fine crystalline phases having an average crystal grain size of 100 nm or less;said compact is formed by a softening phenomenon during crystallization of said alloy; andsaid alloy comprises a crystalline phase after said annealing.