Anode magnetron structure

Nickel Schottky contacts with a diameter of 300 am and a thickness of 1500 A were deposited on the porous SiC by magnetron deposition followed by photolithography patterning. A blanket ohmic contact was formed by Ni deposition on the backside and rapid thermal annealing at 1000 °C was done prior to anodization. The schematic cross-section of the formed structure is shown in Figure 2.21. Note, nickel contacts were deposited on a porous substrate with the skin layer which is characterized by low porosity and pore diameters of <20 nm. Thus, the effect of contact... 

If the anode block of M-type linear magnetron is bent and made re-entrant, in which the end of the structure is connected to the beginning of the structure as shown in Fig. 6.20, then the magnetron is termed a radial magnetron. In the radial magnetron, there is no nonemitting sole. The cathode is an emitting hot cathode. Electrons emitted from the hot cathode are pulled toward the anode by the radial electric field. Therefore, the radial force is expressed in a cylindrical coordinate coaxially set up with the radial... 

Inverted magnetron A radial magnetron in which the anode structure is at inside and the cathode... 

Wan and Zhuang [51 ] proposed a novel layer-wise anode structure to improve the CO-tolerance ability and utilization efficiency of the catalyst. The layer-wise structure consists of an outer and an inner catalyst layer. The outer catalyst layer, acting as a CO barrier, is composed of two nano-Ru layers (0.06 mg cm ) by the magnetron sputtering deposition method and a PtsoRuso layer (0.10 mg cm ) by the screen-printing method on the GDL. The inner catalyst layer providing the hydrogen oxidation reaction is a pure Pt layer (0.07 mg cm ) prepared by the... 

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