The effect of Co addition on the saturation magnetization of Fe16N2

The effects of Co addition on the structure and the saturation magnetizatio n of Fe16N2 were investigated. Enhancement of the formation of Fe16N2 phase by Co addition was observed. Films with 5-25 at % Co contents deposited at proper conditions exhibit a high saturation magnetization up to the range of 2.5-2.7 T. The saturation magnetization of (Fe, Co)(16)N-2 alloys phase is expected to be 2.8-2.9 T, which is as large as that of Fe16N2. This demo nstrates that proper Co addition does not induce notable changes in the hig h saturation magnetization of the Fe16N2. (C) 1999 American Institute of Ph ysics. [S0021-8979(99)20908-5].