Patent application number | Description | Published |
20080265718 | PIEZOELECTRIC BODY, PIEZOELECTRIC DEVICE, AND LIQUID DISCHARGE APPARATUS - A piezoelectric body contains a ferroelectric substance phase having characteristics such that, in cases where an applied electric field is increased from the time free from electric field application, phase transition of the ferroelectric substance phase to a ferroelectric substance phase of a different crystal system occurs at least two times. The piezoelectric body should preferably be actuated under conditions such that a minimum applied electric field Emin and a maximum applied electric field Emax satisfy Formula (1): | 10-30-2008 |
20080278038 | PIEZOELECTRIC DEVICE, PROCESS FOR PRODUCING THE PIEZOELECTRIC DEVICE, AND LIQUID DISCHARGE DEVICE - A piezoelectric device includes a piezoelectric film, and electrodes through which an electric field can be applied to the piezoelectric film along the thickness direction of the piezoelectric film. The piezoelectric film contains a ferroelectric phase in which the thickness direction and a normal of a plane determined by the spontaneous-polarization axis and the [010] axis makes an angle θm satisfying the condition that −45 degrees<θm<+45 degrees and θm≠0 degrees. Further, the spontaneous-polarization axis or the [010] axis may be perpendicular to the thickness direction of the piezoelectric film. | 11-13-2008 |
20080297005 | PIEZOELECTRIC DEVICE, PROCESS FOR DRIVING THE PIEZOELECTRIC DEVICE, AND PIEZOELECTRIC ACTUATOR - A piezoelectric device constituted by a piezoelectric body and electrodes. The piezoelectric body is a monocrystalline piezoelectric film formed, above a substrate, of an inorganic crystalline compound containing a first ferroelectric crystal when no electric field is applied to the piezoelectric film, and having a characteristic that phase transition of at least a portion of the first ferroelectric crystal to a second ferroelectric crystal occurs when the electric field strength applied to the piezoelectric film is at or above a predetermined level E | 12-04-2008 |
20080302658 | OXIDE BODY, PIEZOELECTRIC DEVICE, AND LIQUID DISCHARGE DEVICE - An oxide body formed of one or more of ferroelectric materials and antiferroelectric materials which exhibit asymmetric double hysteresis in a bipolar polarization-electric field characteristic obtained under a condition that the maximum value of an electric field applied to the oxide body and the magnitude of the minimum value of the electric field are equal (i.e., Emax=|Emin|), where the curve indicating the bipolar polarization-electric field characteristic has at least five points of inflection, and the maximum value of polarization of the oxide body and the magnitude of the minimum value of the polarization are different (i.e., Pmax≠|Pmin|). | 12-11-2008 |
20090085445 | PEROVSKITE-OXIDE LAMINATION, PIEZOELECTRIC DEVICE, AND LIQUID DISCHARGE DEVICE - A perovskite-oxide lamination constituted by a substrate and one or tore first films of a first oxide of a perovskite type and one or more second films of a second oxide which are alternately formed over the substrate. The first oxide has a composition expressed as ABO | 04-02-2009 |
20090108706 | FERROELECTRIC OXIDE, PROCESS FOR PRODUCING THE SAME, PIEZOELECTRIC BODY, AND PIEZOELECTRIC DEVICE - A composition of a ferroelectric oxide represented by General Formula (a) is adjusted such that the most stable crystal structures X and Y of ACO | 04-30-2009 |
20090230211 | PEROVSKITE OXIDE, PROCESS FOR PRODUCING THE PEROVSKITE OXIDE, AND PIEZOELECTRIC DEVICE - A process for producing a piezoelectric oxide having a composition (Ba, Bi, A)(Ti, Fe, M)O | 09-17-2009 |
20090267998 | PIEZOELECTRIC DEVICE, METHOD OF ACTUATING THE SAME, PIEZOELECTRIC APPARATUS, AND LIQUID DISCHARGE APPARATUS - A piezoelectric device comprises a piezoelectric body and electrodes for applying an electric field in a predetermined direction across the piezoelectric body. The piezoelectric body contains an inorganic compound polycrystal, which contains first ferroelectric substance crystals having orientational characteristics at the time free from electric field application and has characteristics such that, with application of at least a predetermined electric field E | 10-29-2009 |
20090295876 | FERROELECTRIC OXIDE STRUCTURE, METHOD FOR PRODUCING THE STRUCTURE, AND LIQUID-DISCHARGE APPARATUS - A ferroelectric oxide structure includes a substrate and a ferroelectric thin-film deposited on the substrate. The ferroelectric thin-film has a thickness of greater than or equal to 200 nm and a tetragonal crystal system. The ferroelectric thin-film has (100) single-orientation crystal orientation. | 12-03-2009 |
20100103226 | PEROVSKITE OXIDE, PROCESS FOR PRODUCING THE SAME, PIEZOELECTRIC FILM, AND PIEZOELECTRIC DEVICE - A process for producing a perovskite oxide having a composition expressed by the compositional formulas A(B, C)O | 04-29-2010 |
20100192842 | PEROVSKITE-OXIDE FILM, PIEZOELECTRIC DEVICE, AND LIQUID DISCHARGE DEVICE - A film formed on a substrate different from the monocrystalline perovskite substrate contains a piezoelectric oxide expressed as A(B | 08-05-2010 |
20110006243 | PEROVSKITE OXIDE, OXIDE COMPOSITION, OXIDE BODY, PIEZOELECTRIC DEVICE, AND LIQUID DISCHARGE APPARATUS - A perovskite oxide represented by a general expression, | 01-13-2011 |
20110074249 | POLYMER COMPOSITE PIEZOELECTRIC MATERIAL AND PIEZOELECTRIC DEVICE USING THE SAME - A polymer composite piezoelectric material is formed, which includes a matrix of an organic polymer resin, and a piezoelectric material included in the matrix. The piezoelectric material contains a perovskite oxide having a composition represented by general formula (PX) below: | 03-31-2011 |
20110216132 | PEROVSKITE OXIDE, PROCESS FOR PRODUCING THE PEROVSKITE OXIDE, PIEZOELECTRIC BODY, PIEZOELECTRIC DEVICE, AND LIQUID DISCHARGE DEVICE - A process for producing a piezoelectric oxide having a composition (A, B, C)(D, E, F)O | 09-08-2011 |
20110217519 | LAYERED STRUCTURE AND PIEZOELECTRIC DEVICE USING THE SAME - A layered structure, including a flexible resin substrate and a composite piezoelectric film formed on the resin substrate and constituted by an organic polymer resin matrix and a plurality of inorganic piezoelectric bodies dispersed in the matrix. | 09-08-2011 |
20110292133 | PEROVSKITE OXIDE, OXIDE COMPOSITION, OXIDE BODY, PIEZOELECTRIC DEVICE, AND LIQUID DISCHARGE APPARATUS - Disclosed is a non-lead perovskite oxide having a low Curie temperature and high ferroelectricity represented by General Formula (P) given below. | 12-01-2011 |
20110292134 | PEROVSKITE OXIDE, OXIDE COMPOSITION, OXIDE BODY, PIEZOELECTRIC DEVICE, AND LIQUID DISCHARGE APPARATUS - A perovskite oxide, which includes a first component represented by General Formula (P1) given below and a second component represented by General Formula (P2) given below. | 12-01-2011 |
20130022736 | FERROELECTRIC OXIDE STRUCTURE, METHOD FOR PRODUCING THE STRUCTURE, AND LIQUID-DISCHARGE APPARATUS - A ferroelectric oxide structure includes a substrate and a ferroelectric thin-film deposited on the substrate. The ferroelectric thin-film has a thickness of greater than or equal to 200 nm and a tetragonal crystal system. The ferroelectric thin-film has (100) single-orientation crystal orientation. | 01-24-2013 |