Abstract:
A magnetometric sensor has a wide p-portion (1a) formed of almost perfectly spin-polarized material, a wide d-portion (1b) also formed of almost perfectly spin-polarized material different in coercive force and a narrow n-portion (1c) provided between the wide p-portion and the wide d-portion formed of the almost perfectly spin-polarized material or non-magnetic material, and one of the p-portion and the d-portion changes the spin axes of the conduction electrons in the opposite direction to the other in the presence of a magnetic field for providing a potential gap between the Fermi surface of the p-portion and the Fermi surface of the d-portion, thereby causing electric current to change the amount thereof.
Abstract:
An oxide superconducting material having a composition represented by a formula Tl Sr₂ (Sr n-x Y x ) Cu n+1 O 5+2n wherein n = 1 or 2 and 0.1 ≦ x ≦ n is provided. This material has a high critical current density Jc even by sintering at a relatively low temperature of 850 - 880°C.
Abstract translation:提供了具有由式T 1 Sr 2(Srn-x Y x)C nn + 1 5 + 2 n表示的组成的氧化物超导材料,其中n = 1或2且0.1≤x≤n。 即使在850-880℃的较低温度下烧结,该材料也具有很高的临界电流密度Jc。
Abstract:
A magnetometric sensor has a wide p-portion (1a) formed of almost perfectly spin-polarized material, a wide d-portion (1b) also formed of almost perfectly spin-polarized material different in coercive force and a narrow n-portion (1c) provided between the wide p-portion and the wide d-portion formed of the almost perfectly spin-polarized material or non-magnetic material, and one of the p-portion and the d-portion changes the spin axes of the conduction electrons in the opposite direction to the other in the presence of a magnetic field for providing a potential gap between the Fermi surface of the p-portion and the Fermi surface of the d-portion, thereby causing electric current to change the amount thereof.
Abstract:
A process for producing a porous body for use as an electrode for a solid electrolytic capacitor. In the process, titanium powder having an average particle size from 10 to 30 µm is mixed with aluminium powder having an average particle size from 1/6 to 1/2 of that of the titanium. The mixture is then compression molded and heat treated in a vacuum or inert gas to diffuse the aluminium into the titanium. In the product the surface of the titanium-aluminium particles has a fine ruggedness of size from 0.5 to 5 µm. The aluminium content of the titanium-aluminium alloy is from 50 to 70 atomic %.
Abstract:
A porous sintered body for an Al-Ti alloy solid electrolytic capacitor comprises a porous body of Al-Ti alloy and a titanium lead wire partly embedded in the porous body. The titanium lead wire is subjected during manufacture to a nitriding treatment and is sintered together with the Al-Ti body so that the surface of the lead wire is converted into an Al-Ti alloy. In one method of producing the porous sintered body, a titanium wire is heat-treated in a nitrogen atmosphere, the wire is then embedded in a mixture of aluminium powder and titanium powder or titanium hydride powder, the mixture is press-moulded with the wire and the press-moulded article is sintered. A solid electrolytic capacitor and a method for manufacturing such a capacitor employing the porous sintered body are disclosed. The invention provides a porous sintered body with an embedded lead wire in which the lead wire is inexpensive and has good electrical characteristics and which avoids the problem of bending deformation of the wire after sintering.
Abstract:
A process for producing a porous body for use as an electrode for a solid electrolytic capacitor. In the process, titanium powder having an average particle size from 10 to 30 µm is mixed with aluminium powder having an average particle size from 1/6 to 1/2 of that of the titanium. The mixture is then compression molded and heat treated in a vacuum or inert gas to diffuse the aluminium into the titanium. In the product the surface of the titanium-aluminium particles has a fine ruggedness of size from 0.5 to 5 µm. The aluminium content of the titanium-aluminium alloy is from 50 to 70 atomic %.