Method of making a sintered body of a magnetic alloyl

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Magnetic alloy material comprises a composition including iron, 6-11 atom% rare earth element, 8-18 atom% silicon or aluminum, and 0-9 atom% cobalt. It exhibits either a two-phase structure of an alpha -iron phase including iron, and silicon or aluminum, and 30-90 atom% rare earth element or a three-phase structure of an alpha -iron phase including iron, and silicon or aluminum, and 30-90 atom% rare earth element with a crystal structure of the sodium-zinc type. The respective phases exhibit an average size of the secondary axis of 40 Nm to 2 mu m. Magnetic alloy material comprises a composition of formula Fe 1 0 0 - a - b - cRE aA nCo c. RE : La; A : Si or Al; a : 6-11; b : 8-18; and c : 0-9. It exhibits either a two-phase structure of an alpha -iron phase including iron (Fe), A and 30-90 atom% rare earth (RE) element or a three-phase structure of an alpha -iron phase including Fe, A and 30-90 atom% RE with a crystal structure of the sodium zinc (NaZn 1 3) type. The respective phases exhibit an average size of the secondary axis of 40 Nm to 2 mu m. Independent claims are also included for : (1) production of a magnetic alloy material comprising producing a melt with a given composition; and fast deterring and solidifying the melt of the alloy material so that an average deterrence speed of 2x10 4> - 2x10 6>[deg]C/s within 1500-600[deg]C is obtained; and (2) production of a sintered compact from a magnetic alloy, comprising producing a powder; consolidating the powder; and sintering.