Properties of the Ni-Cr Oxide Films Prepared by Magnetron Sputtering

Abstract

Thinˆlms of Ni Cr oxide were prepared by magnetron sputtering of NiO Cr 2 O 3 (1 : 1 mol ratio) target in a gas mixture of oxygen and argon. The dependence of the partial pressure ratio R of oxygen to the toal sputtering gas on the compositional, optical and electrical properties of theˆlms was investigated from a standpoint of an application to the infrared sensor. With increasing R, the Ni(220) peak of XRD increases, the optical bandgap decreases and the dc conductivity s as well as the thermistor coe‹cient B th increases. It is found that a set of relatively high values of s and B th for the infrared sensor is obtained in the range of R around 10.

Wettability of Sodium Chloride Aqueous Solutions on SUS304 Stainless Steel with Current Flow

“…18,19) In general, the conductivity of the thin passive film is as high as that of the bare stainless steel substrate. 20) When the steel surface is wetted with an aqueous solution, an electrical double layer (EDL) generally forms at the liquid/solid interface. This EDL model was first proposed by Helmholtz and was subsequently developed by Gouy, Ahapman, Stern and Grahame.…”