METHOD FOR INDUCING PHASE-TRANSITION OF PEROVSKITE-TYPE OXIDE, PEROVSKITE-TYPE OXIDE USED AS ELECTRONIC FUNCTIONAL ELEMENT MATERIAL, ELECTRONIC FUNCTIONAL ELEMENT AND ELECTRONIC DEVICE USING PEROVSKITE-TYPE OXIDE

PROBLEM TO BE SOLVED: To provide a method of inducing a phase transition of perovskite-type oxide for easily inducing a phase transition between an insulator phase and a metal phase of perovskite-type oxide which is a Mott insulator. SOLUTION: The method of inducing the phase transition of perovskit...

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Hauptverfasser:	TAKEMOTO TETSUO, YAMAUCHI YOHEI, NAKAMURA FUMIHIKO, SAKAKI MARIKO
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CHEMISTRY COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY INORGANIC CHEMISTRY METALLURGY SEMICONDUCTOR DEVICES
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Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a method of inducing a phase transition of perovskite-type oxide for easily inducing a phase transition between an insulator phase and a metal phase of perovskite-type oxide which is a Mott insulator. SOLUTION: The method of inducing the phase transition of perovskite-type oxide includes the steps of: causing a phase transition of perovskite-type oxide in an insulator phase from an insulator phase to a metal phase by applying an electric field having some 40-80 V/cm lower by two digits than a previous value of several kV/cm onto the perovskite-type oxide in an insulator phase (S101); and causing a phase transition of the perovskite-type oxide in a paramagnetic metallic phase to a ferromagnetic metallic phase by cooling the perovskite-type oxide changed to a metallic phase by being applied with an electric field (S102). COPYRIGHT: (C)2010,JPO&INPIT