FERROELECTRIC MATERIAL, METHOD OF MANUFACTURING THE SAME AND FERROELECTRIC MEMORY

PROBLEM TO BE SOLVED: To provide a ferroelectric material containing no lead and showing residual dielectric polarization nearly equal to that of PZT and a method of manufacturing the same. SOLUTION: A precursor solution of BiFeO3is applied on the surface of a base member. After the application, a h...

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Hauptverfasser:	UCHIDA HIROSHI, KODA SEIICHIRO, NAKAGI HIROSHI, FUNAKUBO HIROSHI, KONDO MASAO, UENO RISAKO, MARUYAMA KENJI
Format:	Patent
Sprache:	eng
Schlagworte:	ARTIFICIAL STONE BASIC ELECTRIC ELEMENTS CABLES CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE CONDUCTORS ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY INSULATORS LIME, MAGNESIA METALLURGY REFRACTORIES SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES SEMICONDUCTOR DEVICES SLAG TREATMENT OF NATURAL STONE
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Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a ferroelectric material containing no lead and showing residual dielectric polarization nearly equal to that of PZT and a method of manufacturing the same. SOLUTION: A precursor solution of BiFeO3is applied on the surface of a base member. After the application, a heat treatment is carried out to obtain a dielectric film. The dielectric film is heated under a non-oxidizing atmosphere to be crystallized. As a result, the ferroelectric material containing Bi, Fe and O as structural elements and having a tetragonal or orthorhombic crystal lattice is obtained. COPYRIGHT: (C)2006,JPO&NCIPI