Invention Application
US20090211898A1 MAGNETIC RECORDING MEDIA HAVING FIVE ELEMENT ALLOY DEPOSITED USING PULSED DIRECT CURRENT SPUTTERING
审中-公开
具有使用脉冲直接电流溅出的五个元件合金的磁记录介质
- Patent Title: MAGNETIC RECORDING MEDIA HAVING FIVE ELEMENT ALLOY DEPOSITED USING PULSED DIRECT CURRENT SPUTTERING
- Patent Title (中): 具有使用脉冲直接电流溅出的五个元件合金的磁记录介质
-
Application No.: US12391938Application Date: 2009-02-24
-
Publication No.: US20090211898A1Publication Date: 2009-08-27
- Inventor: Charles Changqing Chen , Thanh Thien Ha , Abebe Hailu , Taesun Ernest Kim , Mariana Rodica Munteanu , Steve Kuo-Hsing Hwang
- Applicant: Charles Changqing Chen , Thanh Thien Ha , Abebe Hailu , Taesun Ernest Kim , Mariana Rodica Munteanu , Steve Kuo-Hsing Hwang
- Applicant Address: US CA Scotts Valley
- Assignee: Seagate Technology LLC
- Current Assignee: Seagate Technology LLC
- Current Assignee Address: US CA Scotts Valley
- Main IPC: C23C14/34
- IPC: C23C14/34

Abstract:
CoCrPtB is a conventional material used in some of the layers of a thin film magnetic media structure used for recording data in data storage devices such as hard drives. Typically the CoCrPtB layers used for magnetic media have high Cr and low B in bottom magnetic layers and low Cr and high B in top magnetic layers. In accordance with one embodiment of this invention and to improve media electrical performance, fifth elements, such as Ta, Nb and Hf, etc. were added to the CoCrPtB materials, resulting in CoCrPtB-X, to enhance the grain segregation. The five element CoCrPtB-X layers were deposited using a pulsed direct current sputter technique instead of conventional direct current sputtering techniques. The resulting magnetic media structure having CoCrPtB-X alloy layers exhibits an increase in coercivity Hc and improvement in recording performance.
Information query
IPC分类: