Texture evolution in CoCrPtTa/Cr/NiAl magnetic recording media
نویسندگان
چکیده
Crystallographic textures in a CoCrPtTa/Cr/NiAl multilayer magnetic recording media were studied by electron diffraction. It was found that texture quality evolves through the thickness of the films. A large improvement of texture quality was discovered at the interface of the Cr and NiAl layers. Surprisingly, there remains a portion of randomly oriented grains in the CoCrPtTa layer, in addition to the anticipated grains of @101̄0# texture. The texture quality of the CoCrPtTa layer remains similar to that of the underlying Cr layer. © 1999 American Institute of Physics. @S0021-8979~99!50108-4#
منابع مشابه
New Ni5Al3 Underlayer for Longitudinal Magnetic Recording Media
We describe a new Ni5Al3 underlayer for high-density longitudinal magnetic recording. The Ni5Al3 underlayer has the FCC derivative Ga3Pt5 structure. The Ni5Al3 (221) plane has good lattice match with the CoCrPt (10 1 0) plane. In addition, unlike the NiAl (112) plane, the Ni5Al3 (221) plane has the lowest surface energy. Hence, the Ni5Al3 thin film has a strong (221) texture and can induce CoCr...
متن کاملCoCrPtTa/Ti Perpendicular Media Deposited at High Sputtering Rate
CoCrPtTa/Ti bilayer thin films have been sputter deposited onto both glass and Al substrates under high sputtering rate in a manufacturing environment. From microstructure and magnetic property studies, it is found that Cr segregation and stacking fault density are the two major issues in obtaining high quality perpendicular media. (0002) texture orientation spread and lattice parameter remain ...
متن کاملMgO seed layers for CoCrPt/Cr longitudinal magnetic recording media
Sputter deposited MgO thin films with the B1 crystal structure and ~002! film texture are used as seed layers to improve the texture and magnetic properties of the CoCrPt/Cr magnetic thin films on glass substrates for longitudinal recording. The desired ~002! textured Cr underlayers are usually obtained by sputtering Cr onto heated substrates. However, it is found that the MgO seed layers can i...
متن کاملStacking Faults in Co-Alloy Longitudinal Media
Stacking faults in CoCrTa/Cr, CoCrPt/NiAl, and CoCrPt/Cr/NiAl films have been studied by electron diffraction. Interfacial lattice match and epitaxial growth play important roles in reducing the stacking fault density. It is found that the bicrystal media has large stacking fault densities. In the unicrystal media case, when good epitaxy between magnetic layer and underlayer cannot be achieved,...
متن کاملTEMPERATURE DEPENDENCE OF THE MAGNETIC VISCOSITY IN CoCrTa AND CoCrPtTa THIN FILMS
The temperature dependence of the magnetic viscosity coefficient (Sv), the activation volume (Vact) and the coercivity (Hc) were examined for CoCrTa/Cr and CoCrPtTa/Cr thin films in the temperature range from 200 to 423 K. This experiment shows that the medium noise measured for 150 kFCI is approximately proportional to kT/Sv (=Vact X Ms) at 298K. kT/Sv and the temperature variation of coercivi...
متن کامل