Importance

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Abstract

The present invention provides: a laminated magnetic material for a motor, the material having low core loss characteristics even in a high-frequency band; and a method for manufacturing said laminated magnetic material for a motor. Provided is a laminated magnetic material provided with a plurality of quenched alloy strips and a resin layer made of resin and disposed between the quenched alloy strips. The laminated magnetic material is characterized in that the adhesive stress σ [MPa] represented by the following equation is 1.8 MPa or greater when the modulus of elasticity of the resin at room temperature is denoted by γ [MPa], the coefficient of linear expansion of the resin at room temperature is denoted by α1 [1/K], the curing temperature of the resin is denoted by Ta [K], the coefficient of linear contraction of the resin during curing is denoted by β, the thickness of the resin is denoted by h1 [μm], the thickness of the quenched alloy strips is denoted by h2 [μm], the coefficient of linear expansion of the quenched alloy strips is denoted by α2 [1/K], and room temperature is denoted by RT. σ=h1/h2×γ×{(α1−α2)×(Ta−RT)+β}.

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First Claim