Ferromagnetic materials

Details Ferromagnetic materials Ferromagnetic materials

H - Electricity

01

F

H01F 1/04 (2006.01) H01F 1/03 (2006.01)

Patent

CA 2074161

This invention provides a ferromagnetic material Fe60M x N y where M is at least one element selected from Al, Ga, In and T1, N is at least one element selected from P, As, Sb and Bi, x has a range of 1 ~ x ~ 39 and x + y = 40 and excluding Fe60Ga x AS y. A preferred ferromagnetic material is Fe60Ga x As y, preferably when x has a range of 3 ~ x ~ 37, more prefer- ably when x has a range of 20 ~ x ~ 37, and even more preferably when x has a range of 30 < x ~ 37. Typically, ferromagnetic materials of this type can be homogenised by annealing or melt spinning. Melt spun Fe60Ga x As y can show Curie Temperatures (T c) of about 470 °C and saturation magnetisations of about 89 emu/g. Typically a ferromagnetic material of the Fe60M x N y has a B8 2 type structure.

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