Question:

I wish to enter into the field of soft magnetic powder manufacturing and seek your advice. Thank you.

Answer:

This is not a MIM question.
There are a number of companies making soft magnetic materials. Anyone can make powders from the alloys with soft magnetic properties but there is another class of materials where the powders are individually insulated with a coating of non conductive materials. This group of materials is either patented or made by companies with trade secrets regarding their processes.
The questioner can look up literature on such materials.