| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an Al-based alloy reflective film of which the reflective film surface reproduces a groove, a pit, etc. formed on a substrate with high accuracy so as to reduce the noise of the optical information recording medium and which has high reflectance, and to provide a sputtering target which is useful for forming such a reflective film. <P>SOLUTION: The reflective film for the optical information recording medium is used for the optical information recording medium, wherein the reflective film is composed of the Al-based alloy containing rare earth elements of 2.0 to 15.0%, and a crystallite has a size of 30 nm or smaller in the thickness direction of the reflective film. <P>COPYRIGHT: (C)2010,JPO&INPIT |
