Magnetic Properties and Microstructure of CoCrPtNb/Cr(CrTi)/C Thin Films Sputtered on Glass Substrate at Room Temperature
CoCrPtNb/Cr(CrTi)/C films for longitudinal recording disks were deposited by magnetron sputtering apparatus on glass substrate at room temperature to obtain high coercivity and low noise media for high-density recording systems. Magnetic and structure properties of hcp-(CoCrPt):Nb granular thin films have been investigated. Cr and CrTi underlayers have been applied to improve the in-plane preferred orientation of Co alloy grains. Addition of Ti to the Cr underlayer promotes Co (10,0) in-plane orientation, using a diamond-like carbon (DLC) seedlayer promote Co (11,0). For films with CrTi underlayer and C seedlayer, Hc reaches 2950 Oe even when Mrt is 0.49memu/cm2. The correlation of the magnetic performance with film microstructure was determined using XRD and AFM characterization technique. These granular films possess good in-plane preferred orientation of magnetic moment and c-axis. It is suggested that high performance recording media can be fabricated at room temperature by using proper Cobalt alloys and multilayer structure.
CoCrPtNb magnetic layer glass substrate room temperature
杨晓非 程晓敏 董凯峰 林更琪 李佐宜
华中科技大学电子科学与技术系,武汉,430074
国际会议
成都
英文
2007-11-19（万方平台首次上网日期，不代表论文的发表时间）