Accession Number : AD0813989

Title :   STABLE FERRITES FOR R.F. APPLICATIONS.

Descriptive Note : Rept. no. 9 (Final) 1 Jul-31 Dec 66,

Corporate Author : INDIANA GENERAL CORP KEASBEY NJ RESEARCH DEPT

Personal Author(s) : O'Neill, Charles F. ; Tenzer, R. K.

Report Date : APR 1967

Pagination or Media Count : 92

Abstract : Material MF-9003 was further developed. Silicate additives, notably bentonite, were found to generally improve the stability of initial permeability and Q. A major problem found associated with the silicate additions was a severe change of Q with temperature. Divalent iron was very closely related to it. Too much divalent iron results in a considerable loss of Q with decreasing temperature and too little divalent iron results in a considerable increase in Q with decreasing temperature. The silicate containing materials were further improved by adding thorium nitrate. Cup core properties were evaluated in comparison with toroidal properties and a very favorable correlation was found. Overall, material MF-9060 (containing lead silicate and thorium nitrate), is probably the best material developed.

Descriptors :   (*FERRITES, STABILITY), PERMEABILITY, RESONANCE, NICKEL ALLOYS, ZINC ALLOYS, ADDITIVES, SILICATES, CLAY, IRON ALLOYS, LEAD COMPOUNDS, THORIUM COMPOUNDS, NITRATES, TEMPERATURE, RADIOFREQUENCY.

Subject Categories : Inorganic Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE