Soft magnetic CoNiFe films electrodeposited under centrifugal forces

Physical and magnetic properties of soft magnetic CoNiFe films electrodeposited under centrifugal forces were investigated. It was demonstrated that employing an external centrifugal force during the deposition process provides stronger magnetic properties of the soft magnet electrodeposited. Based on the approach proposed, preparation of soft magnetic CoNiFe film with B-s higher than 2.1 T and H-c lower than 1.1 Omegae is possible. For a conventional CoNiFe film with B, of 1.96 T (electrodeposited under Earth's gravity), the saturation induction can be increased to 2.14 T by applying a 290g centrifugal force during the electrodeposition process, while the H-c approximately remained the same. It is thought that this enhancement provided by an applied centrifugal force is due to the increase of bcc/fcc ratio, where this increase is not associated with a significant crystallite growth in this case.