MAGNET POWDER, BOND MAGNET AND MOTOR

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PROBLEM TO BE SOLVED : To provide fine magnet powder having uniform primary particle diameter in which deterioration of magnetic characteristics due to pulverization is less, and to provide a high performance bond magnet using the magnet powder. SOLUTION : Magnet powder has a composition composed of R(R consists of R1 and R2, R1 is at least one kind of rare earth element of Y, La, Ce, Pr, Nd, Sm, Eu, Tb, Dy, Er, Tm, Yb and Lu, R2 is at least one kind of rare earth element of Ho or Gd), T(T is one kind or more of transition metal element, where Fe or Fe and Co are essential), and B. In atomic ratio, R2/(R1+R2)=0.05-0.1, R/T=0.25-0.35 and average primary particle diameter is 45-100 nm. COPYRIGHT : (C)2016, JPO&INPIT