摘要:
A thin magnetic element is provided which can be reduced in size, exhibits a high inductance and figure of merit Q, can meet the use at a high frequency region and does not generate heat so much; and a transducer equipped therewith. The thin magnetic element comprises a coil pattern formed on at least one side of a substrate and a thin magnetic film formed on the coil pattern, wherein said thin magnetic film is formed to a thickness of 0.5 µm or greater but 8 µm or smaller; and at least one of the following conditions is satisfied: assuming that the thickness and width of a coil conductor constituting the coil pattern are t and a, respectively, an aspect ratio t/a of the coil conductor satisfies the relationship of 0.035 ≤ t/a ≤ 0.35; and assuming that the width of the conductor constituting the coil pattern is a and the distance between the mutually adjacent coil conductors in the coil pattern is b, the relationship of 0.2
摘要:
The present invention provides a method for producing a composite hard magnetic material, wherein a composite powder - prepared by mixing; a composite hard magnetic material produced by consolidating a composite powder prepared by mixing an alloy powder having an amorphous phase containing a main component Co and at least Sm, and an alloy powder comprising an amorphous phase as a principal phase and containing at least Fe and/or Co, rare earth elements R and B; an alloy powder having an amorphous phase containing a main component Co and at least Sm; and an alloy powder having an amorphous phase containing at least Fe and/or Co, rare earth elements R and B - is consolidated by taking advantage of softening phenomenon caused by crystallization of the amorphous phase in the alloy powder comprising an amorphous phase as a principal phase.
摘要:
The present invention provides a hard magnetic alloy is obtained by heat treatment, at a heating rate of 20°C/min or more, of a glassy alloy containing Fe as a main component, at least one element R selected from the rare earth elements, at least one selected from Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, and Cu, and B, and having a supercooled liquid region having a temperature width ΔTx of 20°C or more, which is represented by the equation ΔTx = Tx - Tg (wherein Tx indicates the crystallization temperature, and Tg indicates the glass transition temperature), and a sintered compact, a cast magnet, a stepping motor and a speaker each of which includes the hard magnetic alloy.
摘要:
An apparatus for producing a metallic ribbon includes a cooling roll (1), a melt nozzle (2), and an air-cutoffunit (60) provided to cover at least a portion of the periphery of the cooling roll (1) and at least the melt blowout end ofthe melt nozzle (2), for preventing an inflow of air due to rotation of the cooling roll. The air-cutoff unit (60) has a roll top air-cutoff plate provided above the cooling roll to extend from the front side to the rear side in the rotation direction of the cooling roll in such a manner that it approaches the cooling surface in the direction opposite to the rotation direction of the cooling roll. The melt blowout end of the melt nozzle (2) is arranged to pass through a nozzle mounting hole provided in the roll top air-cutoff plate and face the cooling surface of the cooling roll. A method of producing a metallic ribbon uses the apparatus.
摘要:
A magnetoresistive sensor (20) includes a plurality of multilayered magnetoresistive films arranged in parallel. Each multilayered magnetoresistive film includes at least one pinned ferromagnetic layer (32) and at least one free magnetic layer (34). Reversion of magnetization of the pinned ferromagnetic layer is pinned, whereas the vector of magnetization of the free ferromagnetic layer freely reverses in response to an external magnetic field. The vectors of magnetization of the pinned ferromagnetic layers in two adjacent multilayered magnetoresistive films are substantially antiparallel to each other.
摘要:
The present invention relates to a sinter and a casting comprising a high-hardness glassy alloy containing at least Fe and at least a metalloid element and having a temperature interval DELTA Tx alloy as expressed by DELTA Tx = Tx - Tg (where, Tx is a crystallization temperature and Tg is a glass transition temperature) of at least 20 DEG C, this property allowing the alloy to be effectively formed into a part with an intricate shape.