Accession Number : AD0600062

Title :   ON THE PREPARATION OF SINGLE CRYSTAL FERRITE MATERIALS BY THE FLOATING ZONE TECHNIQUE.

Descriptive Note : Final progress rept.

Corporate Author : AIRTRON INC MORRIS PLAINS N J

Personal Author(s) : Lepore,Donald A. ; Puttbach,Richard C.

Report Date : 27 JAN 1964

Pagination or Media Count : 55

Abstract : The growth of single crystal ferrites, by the floating zone technique, was extensively investigated. A pressure vessel, incorporating a floating zone mechanism was constructed; also, appropriate facilities were provided for high frequency induction heating. Investigations into the growth of single crystal ferrite by induction heating were carried out using floating zone, differential pulling, pulling from a selfcontained melt, and stable-melt pulling methods. Also, several experiments were conducted to test the feasibility of radiation melting. The principal materials studied using the methods mentioned above were nickel ferrite, magnetite, manganese ferrite, magnesium ferrite, nickel aluminum ferrite, and yttrium iron garnet. Experiments were conducted to determine suitable induction coils, and the effects of oxygen pressures on molten ferrites are considered. Possible causes for low resistivity and broad linewidth data are discussed. (Author)

Descriptors :   (*SINGLE CRYSTALS, FERRITES), (*FERRITES, CRYSTAL GROWTH), (*CRYSTAL GROWTH, FERRITES), MAGNETITE, GARNET, NICKEL COMPOUNDS, MANGANESE COMPOUNDS, MAGNESIUM COMPOUNDS, ALUMINUM COMPOUNDS, YTTRIUM COMPOUNDS, IRON COMPOUNDS, SILICON COMPOUNDS, CARBIDES, MOLYBDENUM COMPOUNDS, SILICIDES, ZIRCONIUM COMPOUNDS, OXIDES, MELTING, INDUCTION HEATING, STABILITY, PRESSURE

Distribution Statement : APPROVED FOR PUBLIC RELEASE