FERRITE CALCINED BODY, FERRITE SINTERED MAGNET AND MANUFACTURING METHOD THEREOF

To provide a ferrite calcined body and a ferrite sintered magnet which have high Br and less decrease in HcJ, and in which the usage amount of Co and La is more reduced than conventional Ca-La-Co ferrite sintered magnets, and a manufacturing method thereof.SOLUTION: In a ferrite calcined body, the a...

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1. Verfasser:	TANIOKU YASUAKI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	ARTIFICIAL STONE BASIC ELECTRIC ELEMENTS CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F CONCRETE ELECTRICITY INDUCTANCES INORGANIC CHEMISTRY LIME, MAGNESIA MAGNETS METALLURGY REFRACTORIES SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES SLAG TRANSFORMERS TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:	To provide a ferrite calcined body and a ferrite sintered magnet which have high Br and less decrease in HcJ, and in which the usage amount of Co and La is more reduced than conventional Ca-La-Co ferrite sintered magnets, and a manufacturing method thereof.SOLUTION: In a ferrite calcined body, the atomic ratio of metallic elements of Ca, R, A, Fe, Co and Zn (where, R represents an element which is at least one of rare earth elements and which essentially contains La, and A represents Sr and/or Ba) is represented by general formula: Ca1-x-x'RxAx'Fe2n-y-zCoyZnz where the x, x', y and z, and the n (provided that 2n is a molar ratio and represented as 2n=(Fe+Co+Zn)/(Ca+R+A))satisfy 0.40≤x