摘要:
A dielectric ceramic composition prepared by adding 0.1 to 1.3% of B.sub.2 O.sub.3, 1.0 to 3.0% of SiO.sub.2 and 0.5 to 3.0% of ZnO to a composition comprising 18.0 to 27.0% of BaTiO.sub.2, 31.6 to 36.3% of Nd.sub.2 O.sub.3, 27.6 to 35.5% of TiO.sub.2, 2.5 to 8.1% of Bi.sub.2 O.sub.3 and 5.6 to 9.0% of Pb.sub.3 O.sub.4, all percentages being by weight. This dielectric composition has a high dielectric constant and a temperature coefficient controlled within a narrow range and can be fired at relatively low temperatures. Because of these properties, it is used as a multilayer ceramic capacitor in combination with an electrode composed of an Ag-Pd alloy containing a major amount of Ag.
摘要翻译:通过将0.1〜1.3%的B 2 O 3,1.0〜3.0%的SiO 2和0.5〜3.0%的ZnO添加到包含18.0〜27.0%的BaTiO 2,31.6〜36.3%的Nd 2 O 3,27.6〜35.5%的BaTiO 2的组合物中制备的电介质陶瓷组合物 TiO 2,2.5〜8.1%的Bi 2 O 3和5.6〜9.0%的Pb 3 O 4,所有的百分数均为重量百分比。 该电介质组合物具有高介电常数和温度系数控制在窄范围内并且可以在相对低的温度下烧制。 由于这些性质,它被用作与包含主要量的Ag的Ag-Pd合金组成的电极的多层陶瓷电容器。
摘要:
Disclosed is a dielectric ceramic material comprising lanthanum magnesiumtitanate having a perovskite structure. The lanthanum magnesiumtitanate is preferably used in the form of a composition of the lanthanum magnesiumtitanate and calcium titanate as the dielectric ceramic material. The dielectric ceramic material has a small dielectric loss and a large dielectric constant, and the temperature coefficient of the resonance frequency can be controlled to a small value within a certain range. This dielectric material is valuable as a microwave resonator.
摘要:
Disclosed is a dielectric material composition having the following composition formula:Ba(Nd.sub.x/2 La.sub.y/2 Y.sub.z/2 Nb.sub.1/2)O.sub.3 (1)wherein x, y and z are positive numbers satisfying requirements of x+y+z=1, 1.gtoreq.x.gtoreq.0, 1.gtoreq.y.gtoreq.0 and 1>z.gtoreq.0,and having a perovskite structure.This dielectric material composition has a large permittivity, a low dielectric loss and a small temperature coefficient of the resonance frequency, and is valuable as a microwave dielectric material.
摘要:
Disclosed is a dielectric ceramic material having a chemical composition represented by the formula Sr(Ni.sub.1/3 Nb.sub.2/3)O.sub.3 or (1-x)Sr(Ni.sub.1/3 Nb.sub.2/3)O.sub.3.xBaTiO.sub.3 in which x is a positive number of up to 0.3 and also having a perovskite structure. This dielectric material has a small dielectric loss and a large dielectric constant, and the temperature coefficient of the resonance frequency can be controlled to a small value within a certain range. The dielectric ceramic material is valuably used for microwave dielectric ceramics.
摘要:
In a multilayer ceramic capacitor comprising internal electrodes of an Ag-Pd alloy, by incorporating 0.05 to 0.7%, by weight of Ag into a ceramic dielectric layer, the equivalent series resistance can be reduced and the capacitance can be increased. Incorporation of Ag in the dielectric layer can be accomplished by adding Ag.sub.2 O into a green sheet of the dielectric material in advance or by firing a green sheet of the dielectric material in a powder containing Ag.sub.2 O.
摘要:
A semiconductor device includes a semiconductor layer; a first type of a first semiconductor element that is arranged in a first element region of the semiconductor layer, has first and second main electrodes, and switches current; and a second type of a second semiconductor element that is arranged in a second element region of the semiconductor layer, has third and fourth main electrodes, and freewheels the current. The first and second element regions are adjacent in a direction orthogonal to a direction in which current flows, and are formed in a loop shape over the entire element region when the semiconductor layer is viewed from above. The first main electrode is electrically connected to the third main electrode, and the second main electrode is electrically connected to the fourth main electrode. When the semiconductor layer is viewed from above, a ratio of a length of the first main electrode to a length of the second main electrode is larger than a ratio of a length of the third main electrode to a length of the fourth main electrode.
摘要:
When measuring an edge region, a photo detector with an angle not influenced by the diffracted light, the diffracted light causing noise, is selected to thereby allow for inspection that minimizes the sensitivity reduction. This allows for the management of foreign matters in the outer peripheral portion, which conventionally could not be measured, and this also eliminates the oversight of critical defects on the wafer, thus leading to reduction of failures of IC.
摘要:
When measuring an edge region, a photo detector with an angle not influenced by the diffracted light, the diffracted light causing noise, is selected to thereby allow for inspection that minimizes the sensitivity reduction. This allows for the management of foreign matters in the outer peripheral portion, which conventionally could not be measured, and this also eliminates the oversight of critical defects on the wafer, thus leading to reduction of failures of IC.
摘要:
There are proposed tweezers with grounding wire for grabbing a minute object containing an infinitesimal substance, which can discharge static electricity in the human body when it is used to grab a minute object, and which thus prevents the action of static electricity on the minute object and/or infinitesimal substance therein. The tweezers with grounding wire is constructed by connecting the grounding wire 2 for discharging the static electricity when a human operates the tweezers 1 The tweezers with grounding wire is particularly useful for handling a minute object 8 containing infinitesimal substance 7 of which shape is unrecognizable with naked eyes or an optical microscope. Since static electricity in the human body or in the object handled is discharged through the grounding wire 2 from the tweezers 1, the minute object 8 and the infinitesimal substance 7 to be handled are not subject to the action of static electricity, and thus are kept free from destruction or damage of static electricity.
摘要:
A conductive probe for a scanning type microscope that captures the substance information of the surface of a specimen by the tip end of a conductive nanotube probe needle fastened to a cantilever, in which the conductive probe is constructed from a conductive film formed on the surface of the cantilever, a conductive nonatube with its base end portion being fixed in contact which the surface of a predetermined of the cantilever, and a conductive deposit which fastens the conductive nanotube by covering from the base end portion of the nonatube to a part of the conductive film. The conductive nonatube and the conductive film are electrically connected to each other by the conductive deposit.