摘要:
There is provided a piezoelectric transducer comprising a substrate having a single crystal plate comprising strontium titanate or magnesium oxide, a first electrode comprising metal films so formed on the substrate as to leave openings exposing the surface of the substrate, a piezoelectric thin film comprising lead titanate as the main component formed so as to cover the openings and the first electrode, and a second electrode formed on the piezoelectric thin film.
摘要:
It is disclosed that a Heusler alloy thin film having a structure of a single crystal is prepared by forming a Heusler alloy thin film having a magneto-optical effect and an MgAgAs type crystalline structure on a single crystal substrate, whereby magnetization is easily effected in a low applied magnetic field. This single crystal thin film is suitable as a material of a head for writing magnetically and reading out optically.
摘要:
In synthesizing cubic boron nitride from hexagonal boron nitride under high temperature and high pressure conditions, if water is incorporated into the raw material in an amount of at least 3% by weight, cubic boron nitride of a higher purity in the form of smaller crystallites than in conventional products can be obtained under lower temperature and lower pressure conditions than in conventional methods. When graphitic hexagonal boron nitride is used as the raw material, the temperature and pressure necessary for synthesis can be reduced to about 600.degree. C. and 50 Kbar, respectively.
摘要:
Optical waveguide and the method for making the same, in which a semiconductor laser diode and an optical isolator are formed on one substrate in a monolithic manner. At the moment, a semiconductor laser diode is made by a III-V compound semiconductor crystal, such as GaAs, InP, etc., and an optical isolator is made of iron garnet to fabricate these in monolithic, and this invention was established by developing the technology to monocrystallize at least a small part of the garnet film containing no iron which is deposited on the semiconductor substrate and to use this as the seed crystal for the said phase epitaxial growth of the iron garnet film which forms the iron garnet optical waveguide.
摘要:
In a raw material preparing step, a rice powder as a primary raw material powder is added with a water to prepare a mixed raw material. In a kneading step, the mixed raw material is kneaded to form a kneaded substance. In a pressing/extending step, the kneaded substance is pressed and extended to form noodle dough sheet. In a slitting step, the noodle dough sheet is slit into predetermined noodle strand shape to obtain a continuous noodle strand However, these steps maintain a non-alpha state of the rice powder component In a packaging step, a unit-length noodle strand is accommodated in a pouch-like heat-resistant packaging container and hermetically sealed to obtain a packaged unit-length noodle strand, while maintaining a non-alpha state of the rice powder component in the noodle strand.
摘要:
The present invention provides a refrigerator with improved refrigerator box strength and high heat insulating performance, which is configured such that external deformation due to entry of air into a vacuum heat insulating material, the entry of air being caused by aging degradation, is prevented. The present invention includes: a heat-insulated box including an inner casing and an outer casing, in which space between the inner casing and the outer casing is filled with a foamed heat insulating material; and a vacuum heat insulating material disposed in at least a side wall of the heat-insulated box together with the foamed heat insulating material, the vacuum heat insulating material including an outer skin material, the outer skin material including at least a core material and being decompression-sealed. The vacuum heat insulating material includes a gas adsorbent. Since the vacuum heat insulating material including the gas adsorbent is included in the side wall, which tends to be greatly distorted among the heat insulating walls of the refrigerator, the rigidity of the side wall is improved and aging degradation of the vacuum heat insulating material is suppressed. As a result, the rigidity of the heat-insulated box can be maintained for a long term, and external deformation of the outer casing of the body can be prevented.
摘要:
A method include disposing a semiconductor chip having an electrode pad formed on a circuit forming surface on one surface of a support so that the electrode pad contacts with the one surface of the support, forming a first insulating layer on the one surface of the support so that the first insulating layer covers at least a side surface of the semiconductor chip, removing the support and forming an interconnection terminal on the electrode pad, forming a second insulating layer on the circuit forming surface of the semiconductor chip and the first insulating layer so that the second insulating layer covers the interconnection terminal, exposing an end portion of the interconnection terminal from a top surface of the second insulating layer, and forming a wiring pattern that is electrically connected to the end portion of the interconnection terminal, on the top surface of the second insulating layer.
摘要:
There are provided the steps of connecting a chip component 13 to a first substrate 10 through a wire 14, providing an electrode 21 on a second substrate 20, attaching, to the first substrate 10, a molding tool 30 having a protruded portion 31 formed corresponding to an array of a bump connecting pad 12 of the first substrate 10 and a cavity 32 formed corresponding to a region in which the chip component 13 is mounted, thereby forming a first sealing resin 34 for sealing the chip component 13 and the wire 14, bonding the electrode 21 to the bump connecting pad 12 through a solder, thereby bonding the first substrate 10 to the second substrate 20, and filling a second filling resin 40 in a clearance portion between the first substrate 10 and the second substrate 20.
摘要:
The magnetoresistance effect element is of a multilayered structure having at least magnetic layers and an intermediate layer of an insulating material, a semiconductor or an antiferromagnetic material against the magnetic layers, and the magnetoresistance effect element has terminals formed at least on the opposite magnetic layers, respectively, so that a current flows in the intermediate layer. The film surfaces of all the magnetic layers constituting the magnetoresistance effect element are opposed substantially at right angles to the recording surface of a magnetic recording medium. Therefore, the area of the magnetic layers facing the recording surface of the magnetic recording medium can be extremely reduced, and thus the magnetic field from a very narrow region of the high-density recorded magnetic recording medium can be detected by the current which has a tunneling characteristic and passes through the intermediate layer.
摘要:
A semiconductor device enabling word lines to be arranged at close intervals, comprising a plurality of memory transistors arranged in an array and a plurality of word lines serving also as gate electrodes of memory transistors in a same row, extending in a row direction, and repeating in a column direction, where insulating films are formed between the plurality of word lines to insulate and isolate the word lines from each other and where a dimension of separation of word lines is defined by the thickness of the insulating films.