PREPARATION OF A SINGLE PHASE R3(Fe, Mo)29 (R=Ce, Nd, Sm, Gd, Tb, Dy AND Y)
(Department of Materials Science and Engineering,Zhejiang University, Hangzhou 310027, P. R. China)
Abstract: The new type of rare earth iron intermetallic compounds R3(Fe, Mo)29in the field of permanent magnetic materials have been paid more attention to, but it is very difficult to prepare a single phase 3∶29. The preparation of a single phase R3(Fe, Mo)29(R=Ce, Nd, Sm, Gd, Tb, Dy and Y) including the effects of the content of stabilizing element Mo, rare earth Y and annealing conditions on the formation of R3 (Fe, Mo)29compounds, has been discussed in detail. The results showed that the content of stabilizing element Mo in single phase 3∶29 compounds is equal to the corresponding Mo contentxat maximum Curie temperatures of 2∶17 phase in nominal composition R3(Fe1-xMox)29under the unsuitable annealing conditions. The single phase 3∶29 compounds can be prepared at thisxvalue by verifying the annealing temperatures.
Key words: 3∶29 compounds preparation a single phase