| 摘要 |
The invention provides a method for the directional solidification of Bi/MnBi compositions to produce magnetic single domain size MnBi particles, in aligned array, having a particle size of less than 1 micron and having an Mn concentration of up to 50 atomic percent, which comprises directionally solidifying a composition containing Mn and Bi, said composition containing from 0.1 to 50% by atomic fraction Mn, at a solidifying rate of 0.5 cm/h and at a thermal gradient, in the liquid at the liquid-solid interface, of from 10 DEG C/cm to 1000 DEG C/Cm. |
