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Disclosed is a magnetic material which exhibits an improved saturation magnetic flux density and an improved magnetic anisotropy and, thus, is adapted for use as a raw material of a permanent magnet or a bond magnet of a high performance. The magnetic material is represented by a general formula Rx Coy Fe100-x-y (I)

where R is at least one element selected from the rare earth elements, x and y are atomic percent individually defined as 4x20 and 0.01y70, and Co and Fe occupy 90 atomic percent or more in the principal phase of the compound.

As apparent from general formula (II), the magnetic material according to the second phase of the present invention contains the rare earth element R, Co and Fe in the same amounts as in the magnetic material represented by general formula (I). The functions of these components of the Magnet Material are as described previously in conjunction with the magnetic material according to the first aspect of the present invention.

The magnetic material of formula (II) further contains component A, which is selected from the group consisting of H, N, C and P, in an amount of 20 atomic percent or less. The component A, which is mainly present in the interstitial position of the TbCu 7 crystal structure, serves to improve the Curie temperature of the principal phase as well as the saturation magnetic flux density and the magnetic anisotropy of the magnetic material, compared with the magnetic material which does not contain the component A. If the amount of component A exceeds 20 atomic percent, it is difficult to form the TbCu 7 phase. Preferably, the amount of component A should be 10 atomic percent or less.

In the second aspect of the present invention, it is possible for Fe contained in the magnetic material to be partly replaced by at least one element M which is selected from the group consisting of Ti, Cr, V, Mo, W, Mn, Ni, Sn, Ga, Al, Ag, Cu, Zn, Nb and Ta. Where Fe is partly replaced by the element M, SmCo Magnet the principal phase is enabled to occupy a greater portion of the entire magnetic material. At the same time, it is possible to increase the total concentration of Fe, Co and M in the principal phase of the magnetic material. It should be noted, however, that, if Fe is replaced in an unduly large amount by the element M, the saturation magnetic flux density of the resultant magnetic material is lowered. To avoid the difficulty, it is desirable to set the substituting amount of the element M at 20 atomic percent or less based on the amount of Fe.

The principal phase of the magnetic material contains Co and Fe. It should be noted that the sum of Co and Fe in the principal phase should be at least 90 atomic percent based on the total amount of the principal phase except the element A. If the sum of Co and Fe in the principal phase is less than 90 atomic percent based on the total amount of the principal phase except the element A, it is impossible to obtain a magnetic material having a high saturation magnetic flux density. Particularly, it is desirable for Fe to occupy at least 25 atomic percent, more preferably at least 50 atomic percent,Rubber Magnet and most preferably 60 to 80 atomic percent, based on the sum of Co and Fe contained in the principal phase. Where Fe is contained in a large amount in the principal phase, the resultant magnetic material is enabled to exhibit a further increased saturation magnetic flux density.