摘要:
A thin-film resistor that has a stable electric resistance, the phase transformation to the α-phase being suppressed even in the high temperature environment, is provided. The thin-film resistor has a layered structure of: a base layer formed of a double-layered film in which an alloy film containing nickel and copper, an alloy film containing nickel and chromium or an alloy film containing copper and manganese is stacked on a tantalum film, or formed of a single alloy film containing nickel and chromium; and an electric resistance layer formed of a β-phase tantalum film or an alloy film mainly containing β-phase tantalum, and deposited on the base layer, the electric resistance layer having a crystal structure in which (002) plane of the β-phase crystal is most strongly oriented to the layer surface.
摘要:
A thin-film resistor that has a stable electric resistance, the phase transformation to the α-phase being suppressed even in the high temperature environment, is provided. The thin-film resistor has a layered structure of: a base layer formed of a double-layered film in which an alloy film containing nickel and copper, an alloy film containing nickel and chromium or an alloy film containing copper and manganese is stacked on a tantalum film, or formed of a single alloy film containing nickel and chromium; and an electric resistance layer formed of a β-phase tantalum film or an alloy film mainly containing β-phase tantalum, and deposited on the base layer, the electric resistance layer having a crystal structure in which (002) plane of the β-phase crystal is most strongly oriented to the layer surface.
摘要:
The present invention relates to a method for forming a dry etching mask. A plurality of aluminum oxide films are sequentially sputtered on a material to be dry etched in such a manner that etching rate with respect to reactive ion etching increases toward a lower layer. On a laminated film of the plurality of aluminum oxide films, there is formed a first mask that has etching resistance with respect to the reactive ion etching. Reactive ion etching is performed from above the first mask to form a second mask of the laminated film.