Murata Manufacturing

About: Murata Manufacturing is a company organization based out in Kyoto, Japan. It is known for research contribution in the topics: Electrode & Layer (electronics). The organization has 7351 authors who have published 10408 publications receiving 91279 citations. The organization is also known as: Murata Manufacturing Co., Ltd. & Kabushiki-gaisha Murata Seisakusho.

Transparent conductive film and method for manufacturing the same

Abstract: A ZnO-based transparent conductive film is produced by growing ZnO doped with a group III element oxide on a substrate and has a region with a crystal structure in which a c-axis grows along a plurality of different directions. The transparent conductive film produced by growing ZnO doped with a group III element oxide on a substrate has a ZnO (002) rocking curve full width at half maximum of about 13.5° or more. ZnO is doped with a group III element oxide so that the ratio of the group III element oxide in the transparent conductive film is about 7% to about 40% by weight. The transparent conductive film is formed on the substrate with a SiNx thin film provided therebetween. The transparent conductive film is formed on the substrate by a thin film formation method with a bias voltage applied to the substrate.

Semiconductor device in which zinc oxide is used as a semiconductor material and method for manufacturing the semiconductor device

Abstract: A semiconductor device having excellent crystallinity and excellent electric characteristics includes a ZnO thin film having excellent surface smoothness. ZnO-based thin films (an n-type contact layer, an n-type clad layer, an active layer, a p-type clad layer, and a p-type contact layer) primarily including ZnO are formed sequentially by an ECR sputtering method or other suitable method on a zinc-polar surface of a ZnO substrate. A transparent electrode and a p-side electrode are formed by an evaporation method or other suitable method on a surface of the p-type contact layer, and an n-side electrode is formed on an oxygen-polar surface of the ZnO substrate.

Microwave Characteristics of (Zr, Sn)TiO4 and BaO‐PbO‐Nd2O3‐TiO2 Dielectric Resonators

Abstract: The microwave characteristics of two dielectric resonator materials were investigated. This research included (Zr, Sn)TiO4, a material having the characteristics of a dielectric constant K= 38, Q= 7000 at 7 GHz, and temperature coefficient of resonant frequency τf, = 0 ppm/°C. The investigation determined the relations between the dielectric loss and micro-structures of this ceramic. Analysis by X-ray microanalyzer made it clear that the addition of Fe2O3 increased the dielectric loss of this ceramic because the Fe ions diffused into the grain. The other material investigated was BaO-PbO-Nd2O3-TiO2, a ceramic having a dielectric constant of K= 88, Q= 5000 at 1 GHz, and τf= 0 ppm/°C. As this ceramic has a very high dielectric constant, it is useful for applications at frequencies <1 GHz.

Organic tailored batteries materials using stable open-shell molecules with degenerate frontier orbitals

Abstract: Secondary batteries using organic electrode-active materials promise to surpass present Li-ion batteries in terms of safety and resource price. The use of organic polymers for cathode-active materials has already achieved a high voltage and cycle performance comparable to those of Li-ion batteries. It is therefore timely to develop approaches for high-capacity organic materials-based battery applications. Here we demonstrate organic tailored batteries with high capacity by using organic molecules with degenerate molecular orbitals (MOs) as electrode-active materials. Trioxotriangulene (TOT), an organic open-shell molecule, with a singly occupied MO (SOMO) and two degenerate lowest-unoccupied MOs (LUMOs) was investigated. A tri-tert-butylated derivative ((t-Bu)(3)TOT)exhibited a high discharge capacity of more than 300 A h kg(-1), exceeding those delivered by Li-ion batteries. A tribrominated derivative (Br(3)TOT) was also shown to increase the output voltage and cycle performance up to 85% after 100 cycles of the charge-discharge processes.

LC composite component

Abstract: An LC composite component employing a ceramic sintered body obtained by laminating pluralities of magnetic green sheets and dielectric green sheets and cofiring the same. The ceramic sintered body is provided therein with a magnetic region and a dielectric region along the direction of thickness. The magnetic region of the sintered body is provided with at least one inner electrode layer which extends to first opposite side surfaces of the sintered body, thereby to define an inductance unit. The dielectric region is provided with a plurality of electrodes oppositely arranged through the dielectric substance, which plurality of electrodes includes first and second electrodes. A pair of first outer electrodes are formed on the first side surfaces of the sintered body, to be electrically connected with the inner electrode formed in the magnetic region. The first electrode in the dielectric region is electrically connected with at least one of the first outer electrodes, and the second electrodes is connected with a second outer electrode which is formed on another surface of the sintered body.