Original Publication Date: 1979-May-01
Included in the Prior Art Database: 2005-Feb-20
Films may be formed using alcohol solutions of the film ingredients, spun on a substrate, and dried. Ferrite films are formed from Table 1: (Image Omitted) wherein a nearly saturated solution of Fe, Mn, Zn nitrates and acetates is made in a mixture of alcohols. The solution is spun and dried on a refractory substrate Al(2)0(3), Gd Ga garnet or a nonmagnetic spinel. Heat to 550 degrees C between coats. Heat to 900-1200 degrees to crystallize ferrite. This approach has a number of unique features. 1. Higher alcohols butanol, amylalcohol produce thicker, approximately 500 angstroms films than previously. 2. Grain size enhanced with dopants La, Bi, Si 3. Buffer films reduce reaction with substrate ions. 4. B-H loop like ceramic.