Accession Number : AD0289888

Title :   ORDERING IN OXIDE SOLID SOLUTIONS

Descriptive Note : Rept. for May 61-Apr 62

Corporate Author : CLEMSON AGRICULTURAL COLL S C

Personal Author(s) : WILSON,H.H.

Report Date : OCT 1962

Pagination or Media Count : 1

Abstract : A study was made of solid solutions of MgO with Mn-, Fe-, and Co oxides to determine the effect of extended heat treatment and of controlled furnace atmospheres on the formation of superlattices. Heat treatments involving temperatures up to 1350 C and times up to 600 hours were used. Furnace atmospheres were controlled so as to be either neutral, slightly oxidizing, or slightly reducing with respect to the divalent metallic ions. Indications of ordering were found in those compositions that were heated in reducing atmospheres. A broad diffraction peak was found at 6.4 Angstroms which is three times the (002) spacing of the unordered lattices. (Author)

Descriptors :   *MAGNESIUM COMPOUNDS, *OXIDES, COBALT COMPOUNDS, CONTROLLED ATMOSPHERES, CRYSTAL LATTICES, IONS, IRON COMPOUNDS, MANGANESE COMPOUNDS, METAL CRYSTALS, OXYGEN, X RAY DIFFRACTION

Distribution Statement : APPROVED FOR PUBLIC RELEASE