中国有色金属学报(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 15 No. 2 April 2005 |
film media
（1. College of physics, Hebei Normal University, Shijiazhuang 050016, China;
2. Key Laboratory of Materials Physics, Institute of Solid State Physics,
Chinese Academy of Sciences, Hefei 230031, China）
Abstract: The nanocomposite films of CoCrPt/Ag were prepared by DC and RF magnetron sputtering onto glass substrates and subsequent annealing. Magnetic and structure properties of these films have been investigated in detail. Vibrating sample magnetometer(VSM), X-ray diffraction(XRD) and scanning probe microscope (SPM) were applied to study the magnetic properties and microstructure. Magnetic properties such as coercivity(Hc) are strongly dependent on the thickness of Ag and the annealing temperature. When the thickness of Ag underlayer is 20nm, the coercivity reaches the maximum of 2200×79.578A/m. The XRD patterns show that the CoCrPt films are hcp structure lying on the film plane. The SPM images show that small and uniform magnetic grains are isolated by Ag. The effect of Ti underlayer on the magnetic properties is also investigated. These features make CoCrPt/Ag nanocomposite films very attractive for the next-generation of high-density recording.
Key words: CoCrPt/Ag(Ti); nanocomposite films; magnetron sputtering; coercivity
