摘要:
A method of fabricating a superconducting ceramic pipe including the steps of: melting a ceramic powder having a predetermined composition to form a melt; filling a supporting tube with the melt by a suction caused by a vacuum pressure; partially solidifying an outer part of the melt near the tube to form a shell (i.e., a ceramic pipe); discharging an inner unsolidified part at the center of the tube from the tube by gravity, to form a solidified ceramic pipe on the inside surface of the tube; and heat treating the ceramic pipe to convert it into a superconducting pipe. When a supporting tube with a bottom plate is used, the melt is poured into the tube, and the tube is turned over to remove an unsolidified melt, whereby a superconducting ceramic pipe with a bottom is fabricated.
摘要:
The invention relates to a photosensitive and heat-sensitive glass which is composed of 25-70 mol % of Al.sub.2 O.sub.3 and/or Ga.sub.2 O.sub.3, 30-75 mol % of at least one of CaO, BaO, SrO and MgO and 0-40 mol % of an auxiliary component which is at least one of SiO.sub.2, GeO.sub.2, B.sub.2 O.sub.3 and P.sub.2 O.sub.5. The glass is produced by melting a batch mixture of powdery raw materials. By exposure to UV rays the glass colors in yellowish brown, and the color does not fade by termination of the exposure. Bleaching of the colored glass is accomplished by heating for a short time at about 150.degree.-300.degree. C. Coloration and bleaching can be repeated without deterioration. The same glass turns into an opaline foam glass, which presents a very attractive appearance, by heat treatment at a temperature above the softening temperature. This change is irreversible. The foams created in the glass matrix are usually tens of microns in diameter.
摘要翻译:本发明涉及一种感光和热敏玻璃,其由25-70mol%的Al2O3和/或Ga2O3,30-75mol%的CaO,BaO,SrO和MgO中的至少一种和0-40mol% 的SiO 2,GeO 2,B 2 O 3和P 2 O 5中的至少一种的辅助成分。 玻璃是通过熔化粉末状原料的批料混合而制成的。 通过暴露于紫外线,玻璃颜色呈黄棕色,并且颜色不会通过曝光终止而褪色。 有色玻璃的漂白通过在约150-300℃下加热短时间来实现。可以重复着色和漂白而不变质。 相同的玻璃变成蛋白质泡沫玻璃,通过在高于软化温度的温度下进行热处理,呈现出非常有吸引力的外观。 这种变化是不可逆转的。 在玻璃基质中产生的泡沫通常直径为几十微米。
摘要:
A method for depositing a magnesium oxide thin film on a substrate by a laser abrasion method using a sintered body or single crystal of magnesium oxide as a target. In this method, a flat processed film made of magnesium oxide having a (111) plane as its front surface is prepared, using a substrate made of strontium titanate having a (111) plane as its principal surface or yttria-stabilized zirconia having a (111) plane as its principal surface, by directly depositing a film on the principal surface of the substrate and epitaxially growing the film.
摘要:
A thermoelectric conversion material having a novel composition is provided. The thermoelectric conversion material comprises a first dielectric material layer, a second dielectric material layer, and an electron localization layer that is present between the first dielectric material layer and the second dielectric material layer and that has a thickness of 1 nm.
摘要:
A magnetic semiconductor material contains at least one type of transition metals (Mn2+, Fe3+, Ru3+, Re2+, and Os3+) having five electrons in the d atomic orbital as a magnetic ion, in which the magnetic semiconductor material exhibits n-type electrical conduction by injection of an electron carrier and p-type electric conduction by injection of a hole carrier. A specific example is a layered oxy-pnictide compound represented by LnMnOPn (wherein Ln is at least one type selected from Y and rare earth elements of La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu, and Pn is at least one selected from pnicogen elements of N, P, As, Bi, and Sb). A high-sensitivity magnetic sensor, current sensor, or memory device can be made by using a magnetic pn homojunction structure made of thin films composed of the magnetic semiconductor material.
摘要:
Semiconductor devices and circuits with use of transparent oxide film are provided. The semiconductor device having a P-type region and an N-type region, wherein amorphous oxides with electron carrier concentration less than 1018/cm3 is used for the N-type region.
摘要:
A switching element of LCDs or organic EL displays which uses a thin film transistor device, includes: a drain electrode, a source electrode, a channel layer contacting the drain electrode and the source electrode, wherein the channel layer comprises indium-gallium-zinc oxide having a transparent, amorphous state of a composition equivalent to InGaO3(ZnO)m (wherein m is a natural number less than 6) in a crystallized state, and the channel layer has a semi-insulating property represented by an electron mobility of more than 1 cm2/(V·sec) and an electron carrier concentration is less than 1018/cm3, a gate electrode, and a gate insulating film positioned between the gate electrode and the channel layer.
摘要:
In an electride C12A7 provided by replacing free oxygen in 12CaO.7Al2O3 with electrons, a material having metallic electroconductivity and an electric conductivity of more than 5×102 S/cm at room temperature could not have been produced without difficulties. An electride 12CaO.7Al2O3, which has metallic electroconductivity and has an electric conductivity of more than 5×102 S/cm at room temperature, can be produced by heat-treating titanium metal vapor and 12CaO.7Al2O3 single crystal, sinter, or thin film at a temperature above 600° C. and below 1,450° C. for less than 240 hours. Further, thermoelectric field electron release can also be realized using an electron release chip fabricated from the electride.
摘要:
A novel field-effect transistor is provided which employs an amorphous oxide. In an embodiment of the present invention, the transistor comprises an amorphous oxide layer containing electron carrier at a concentration less than 1×10−18/cm3, and the gate-insulating layer is comprised of a first layer being in contact with the amorphous oxide and a second layer different from the first layer.
摘要:
An object of the present invention is to provide a new light-emitting device with the use of an amorphous oxide. The light-emitting device has a light-emitting layer existing between first and second electrodes and a field effect transistor, of which the active layer is an amorphous.