Title :
High coercivity CoCrPt-C nanogranular thin films with Cr (CrTi) underlayer for magnetic recording
Author :
Xu, Yingfan ; Wang, Jian-Ping
Author_Institution :
Data Storage Inst., Singapore
fDate :
9/1/2000 12:00:00 AM
Abstract :
Magnetic and structural properties of hcp-(CoCrPt)100-xCx thin films have been investigated for potential applications in magnetic recording media. High coercivity has been achieved by varying the C content and post-deposition annealing. Addition of Ti to Cr underlayer results in lower annealing temperature and shorter annealing time, while remaining higher coercivity. VSM and XRD measurements showed that the magnetic moment lies fairly well in the film plane under proper preparation conditions. Grain isolation in magnetic layer was improved by the segregated C and further enhanced by post-deposition annealing. The peak value of δM curves decreased upon annealing and changed to a negative value when higher annealing temperatures were applied
Keywords :
X-ray diffraction; annealing; chromium; chromium alloys; cobalt alloys; coercive force; discontinuous metallic thin films; grain size; magnetic moments; magnetic particles; magnetic recording; magnetic thin films; nanostructured materials; permanent magnets; platinum alloys; titanium alloys; C content; CoCrPtC-CrTi; Cr; Cr underlayer; CrTi underlayer; VSM; XRD; annealing temperature; annealing time; grain isolation; hcp-(CoCrPt)100-xCx thin films; high coercivity; high coercivity CoCrPt-C nanogranular thin films; magnetic moment; magnetic properties; magnetic recording; post-deposition annealing; segregated C; structural properties; Annealing; Chromium; Coercive force; Magnetic films; Magnetic moments; Magnetic properties; Magnetic recording; Temperature; Transistors; X-ray scattering;
Journal_Title :
Magnetics, IEEE Transactions on
