The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 13, 2007
Filed:
Sep. 29, 2003
Sung-chul Shin, Daejeon, KR;
Mi-young Im, Daejeon, KR;
Sung-Chul Shin, Daejeon, KR;
Mi-Young Im, Daejeon, KR;
Korea Advanced Institute of Science and Technology, Daejeon, KR;
Abstract
Disclosed is herein a magnetic recording medium useful for high density magnetic recording, which contains an optimum composition of Pt so as to have a uniform local coercivity distribution and grain size distribution, and fine grains, and a method of manufacturing the same. The magnetic recording medium includes a 400 Å (CoCr)Pt/1100 Å Ti alloy thin film containing 1 to 14 atom % Pt. Additionally, the method includes a first step of layering a Ti thin film on a glass substrate, a second step of depositing a CoCrPt alloy thin film on the Ti thin film, and a third step of depositing SiNon the CoCrPt alloy thin film. At this time, the CoCrPt alloy thin film contains a predetermined composition of Pt controlled by a CoCr alloy target having a Pt chip positioned thereon. Thereby, the magnetic recording medium having microscopic magnetic property and structural property suitable to a high density magnetic recording medium is realized.