MetaData –Cape Smith
... altitude of 305 m above ground were used in both cases. South of 65N, data were acquired digitally in three surveys flown between 1996 and 1997. A flight-line spacing of 800 m and flight altitude of 150 m above ground were used for these surveys. The International Geomagnetic Reference Field for the ...
... altitude of 305 m above ground were used in both cases. South of 65N, data were acquired digitally in three surveys flown between 1996 and 1997. A flight-line spacing of 800 m and flight altitude of 150 m above ground were used for these surveys. The International Geomagnetic Reference Field for the ...
Relaxor Behavior, Polarization Buildup, and Switching in
... vanished below a size of 200 nm, and that a relaxor state existed down to 30 nm.[23] Below this size, a maximum of dielectric permittivity was not observed, and the authors proposed that a conventional paraelectric phase was present. However, our results indicate that a relaxor state exists for 0.92 ...
... vanished below a size of 200 nm, and that a relaxor state existed down to 30 nm.[23] Below this size, a maximum of dielectric permittivity was not observed, and the authors proposed that a conventional paraelectric phase was present. However, our results indicate that a relaxor state exists for 0.92 ...
Magnetism - HouseWscience
... Only iron, nickel, cobalt and steel can be magnetized (CINS) You make magnets by aligning the domains Stroke iron, cobalt, nickel or steel In one direction with a magnet The more you stroke the stronger the magnet b/c the domains are aligned Place iron, cobalt, nickel or steel in a stron ...
... Only iron, nickel, cobalt and steel can be magnetized (CINS) You make magnets by aligning the domains Stroke iron, cobalt, nickel or steel In one direction with a magnet The more you stroke the stronger the magnet b/c the domains are aligned Place iron, cobalt, nickel or steel in a stron ...
magnetic
... needle attached to the coil may be proportional to the current passing through the coil. Such "meter movements" were at the heart of the moving coil meters such as voltmeters and ammeters until they were largely replaced with solid state meters which have digital readouts. ...
... needle attached to the coil may be proportional to the current passing through the coil. Such "meter movements" were at the heart of the moving coil meters such as voltmeters and ammeters until they were largely replaced with solid state meters which have digital readouts. ...
Multiferroics
Multiferroics have been formally defined as materials that exhibit more than one primary ferroic order parameter simultaneously (i.e. in a single phase), and many researchers in the field consider materials to be multiferroics only if they exhibit coupling between primary order parameters. However, the definition of multiferroics can be expanded to include non-primary order parameters, such as antiferromagnetism or ferrimagnetism.The four basic primary ferroic order parameters areferromagnetismferroelectricityferroelasticityferrotoroidicityThe last is a topic of some debate, as there was no evidence for switching ferrotoroidicity until recently.Many multiferroics are transition metal oxides with perovskite crystal structure, and include rare-earth manganites and -ferrites (e.g. TbMnO3, HoMn2O5, LuFe2O4 and recently, ""PZTFT"",). Other examples are the bismuth compounds BiFeO3 and BiMnO3, non-perovskite oxide LiCu2O2, and non-oxides such as BaNiF4 and spinel chalcogenides, e.g. ZnCr2Se4. These alloys show rich phase diagrams combining different ferroic orders in separate phases.Apart from single phase multiferroics, composites and heterostructures exhibiting more than one ferroic order parameter are studied extensively. Some examples include magnetic thin films on piezoelectric PMN-PT substrates and Metglass/PVDF/Metglass trilayer structures.Besides scientific interest in their physical properties, multiferroics have potential for applications as actuators, switches, magnetic field sensors or new types of electronic memory devices.