Method of fabricating magnets

Claim 1

An improved method of fabricating a multi-layer magnet structure comprising the steps: forming a first slurry of a first ferrite including certain first oxide additives and casting a first tape therefrom; forming at least one other slurry of at least one other chemically different ferrite including certain second oxide additives, at least some which are chemically different from said first oxide additives, and casting an associated tape from each such other slurry; cutting strips of prescribed common length and width from each said tape and forming a laminate with the tapes laid-up in prescribed order superposed and pressed together intimately; and heating, and cofiring this laminate to cure the tapes and leave them adhered to one another; the slurry consistancy, pressure and heating values being selected to assure that there is sufficient inter-diffusion between the tapes that they may be so co-fired to form an integral magnet with no magnetically-significant air gap between the tapes.