Electrochromic thin films of Ni oxide and Ni-Cr oxide were made by rea
ctive dc magnetron sputtering from magnetic Ni as well as nonmagnetic
Ni-Cr alloy targets, respectively. The physical and electrochemical pr
operties of the two materials were similar, indicating that anodically
coloring electrochromic films can be made by a standard large area de
position technique. (C) 1998 American Institute of Physics. [S0021-897
9(98)03523-3].