PARTICULATE COMPOSITIONS OF FERROMAGNETIC METAL OXALATES IN THE FORM OF SUBMICRONIC NEEDLE SHAPED PARTICLES, PREPARATION AND APPLICATION THEREOF

PCT No. PCT/FR86/00338 Sec. 371 Date Jul. 2, 1987 Sec. 102(e) Date Jul. 2, 1987 PCT Filed Sep. 30, 1986 PCT Pub. No. WO87/02033 PCT Pub. Date Apr. 9, 1987.The disclosed particulate composition of simple or mixed oxalate of ferromagnetic metals is characterized in that it is provided in the form of n...

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Bibliographische Detailangaben
Hauptverfasser:	ROUSSET, ABEL, MOLLARD, PAUL, BONINO SALVAING, CHRISTIANE, MANOUX, ALAIN, TAILHADES, PHILIPPE
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS CASTING CHEMISTRY COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F COMPOUNDS THEREOF INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER INORGANIC CHEMISTRY MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER METALLURGY NON-METALLIC ELEMENTS ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICS POWDER METALLURGY TRANSPORTING WORKING METALLIC POWDER
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Zusammenfassung:	PCT No. PCT/FR86/00338 Sec. 371 Date Jul. 2, 1987 Sec. 102(e) Date Jul. 2, 1987 PCT Filed Sep. 30, 1986 PCT Pub. No. WO87/02033 PCT Pub. Date Apr. 9, 1987.The disclosed particulate composition of simple or mixed oxalate of ferromagnetic metals is characterized in that it is provided in the form of needle-shaped particles having a length comprised between 0.05 and 0.5 micrometer, with a proportion higher than 60% of particles having a length equal to the average length +/-0.1 mu m. and an acicular ratio higher than 3, said average length being comprised between 0.15 and 0.35 mu m; its preparation and its application are also disclosed.