Abstract:
The room temperature, low field intergrain magnetoresistance (IMR) of the double perovskite SrFe0.5MO0.5O3 is found to be highly tunable by doping either Ca or Ba into the Sr site. The dopant exerts a chemical pressure, changing the Curie temperature and the magnetic softness. The IMR at optimal doping (Sr0.2Ba0.8Fe0.5Mo0.5O3) is approximately 3.5 % in 100 Oe, and increases further in high fields. The unprecedented strength of the IMR in this highly spin polarized system provides new grounds for employing novel magnetic materials for new magnetic sensing applications and spin electronics.
Abstract:
The present invention relates to new multiferroic materials. More particularly, the present invention relates to new multiferroic single phase ceramic materials as well as to thin films formed from these materials, methods of preparing these materials and their use as multiferroic materials in electronic components and devices.
Abstract:
The present invention relates to forming the material represented by the following formula (1) into a layer having hexagonal crystalline structure, which is different from the orthorhombic crystalline structure of the material in bulk phase, so that the material can be used more effectively in various fields requiring multiferroic properties by obtaining multiferroic properties enhanced than the conventional multiferroic materials. RMnO 3 , (R = Lanthanide)… (1)
Abstract:
A magnetic field responsive device which comprises: an electrically insulating substrate (2), a layer of an electrically conductive soft magnetic material (3), a layer of giant magneto-resistive (GMR) material (5) arranged in electrical contact with the layer of electrically conductive soft magnetic material, the thickness of the GMR material layer being not greater than twice the mean free path of an electron in the said GMR material, the layers being arranged in any order or position on the substrate and having opposed directions of magnetisation in zero applied magnetic field.
Abstract:
Die Erfindung betrifft ein Verfahren zur thermischen Steuerung mindestens einer temperaturabhängigen enzymatischen Reaktion in Gegenwart magnetischer Partikel, insbesondere Nanopartikel, oder magnetischer Beads in vitro durch Erwärmung der magnetischen Beads oder magnetischen Partikel mittels Wechselmagnetfelder auf mindestens eine bestimmte Zieltemperatur. Bei der mit dem erfindungsgemäßen Verfahren thermisch steuerbaren enzymatischen Reaktion handelt es sich vorzugsweise um eine PCR-Reaktion oder eine andere Reaktion zur Elongation oder Vervielfältigung von Nukleinsäuren, einschließlich DNA, RNA oder Hybride oder Derivate davon, welche direkt auf den funktionalisierten magnetischen Beads stattfindet. Weitere Aspekte der Erfindung betreffen einen Reaktor zur Durchführung des Verfahrens und die Verwendung des Verfahrens bzw. des Reaktors in der Analytik und Diagnostik.
Abstract:
Esta invención se refiere a un procedimiento para aumentar la temperatura de orden ferromagnético (temperatura de Curie, T?C#191) en óxidos ferromagnéticos tipo doble perovskita A?2#191BB'O?6#191 donde B y B' son iones metálicos (B=Cr,Fe,Co,.. y B'=Mo, Re,W,...). Algunos de estos óxidos son metálicos y ferromagnéticos y presentan una magnetoresistencia (cambio de su resistencia eléctrica al ser sometidos a un campo magnético) importante, por lo que pueden ser usados en dispositivos y sensores magnetoresistivos. La presente invención incluye los materiales tipo A?2#191BB'O?6#191 preparados con la composición y procedimiento que se describirán así como los dispositivos magnetoresistivos (por ejemplo, sensores magnéticos, memorias magnéticas, cabezales de lectura magnéticos, etc.) que en base a ellos se pudieran fabricar.
Abstract:
A semi-conducting material, a method for producing the material, and ways of implementing the material, wherein said material is doped with Cu or CuO, and is ferromagnetic at least at one temperature in the range between -55°C and 125°C. Typically the material may comprise GaP or GaN.
Abstract:
The present invention is directed to the use of perovskite manganite thin films and other magnetic films that exhibit both planar Hall effect and biaxial magnetic anisotropy to form the active area in magnetic sensor devices and in magnetic bit cells used in magnetoresistive random access memory (MRAM) devices. The manganite thin films of the invention are ferromagnetic manganites of the formula R 1-x A x MnO 3 , wherein R is a rare-earth metal, A is an alkaline earth metal, and x is generally between about 0.15 and about 0.5.