Patent ID: 7316752
Filing Date: 2008-01-08
Classification: H01F

Abstract:
1. An R-T-B-C based rare-earth alloy magnetic material (where R is at least one of the rare-earth elements including Y, T is a transition metal including iron as its main ingredient, B is boron, and C is carbon, an amount of R being 25 wt % to 35 wt % of the overall magnetic material, a total amount of B and C being 0.9 wt % to 1.1 wt % of the magnetic material, the balance of the magnetic material being T) comprising: a first compound phase with an R a second compound phase having a diffraction peak at a site with an interplanar spacing d of 0.295 nm to 0.300 nm, wherein the first compound phase is a main phase and an intensity ratio of the diffraction peak of the second compound phase to that of the first compound phase representing a (410) plane (and having an interplanar spacing of 0.214 nm) is at least 10%.