Title :
Effects of substrate temperature on magnetic properties of CoCrTa/Cr films
Author :
Shen, Y. ; Laughlin, D.E. ; Lambeth, D.N.
Author_Institution :
Carnegie Mellon Univ., Pittsburgh, PA, USA
fDate :
9/1/1992 12:00:00 AM
Abstract :
The effects of substrate temperature on CoCrTa/Cr thin films were investigated by depositing CoCrTa films on Cr underlayers/sur with various crystallographic textures at both room temperature and elevated temperature. Contrary to the notion that crystallographic textures of {1120} and {1100} are required to obtain high in-plane coercivity (H c) and low noise in Co/Cr based thin-film media, the present experimental results show that both Hc and ΔM depend more strongly on the sputter temperature of the magnetic layer than on its crystallographic texture. It was also found that the ΔM of {1101}Co/{110}Cr textured films is lower than that of the {1120}Co/{200}Cr films with similar Hc. This suggests that {1101}Co/{110}Cr textured media might have better signal-to-noise properties
Keywords :
chromium; chromium alloys; cobalt alloys; coercive force; ferromagnetic properties of substances; magnetic recording; magnetic thin films; metallic thin films; sputter deposition; sputtered coatings; tantalum alloys; texture; CoCrTa alloys; CoCrTa films; CoCrTa-Cr; Cr underlayers/sur; SNR; crystallographic textures; elevated temperature; experimental results; longitudinal thin film media; low noise; magnetic properties; room temperature; signal-to-noise properties; sputter temperature; substrate temperature; textured media; thin-film media; Atomic layer deposition; Chromium; Crystallography; Glass; Magnetic films; Magnetic noise; Magnetic properties; Sputtering; Substrates; Temperature;
Journal_Title :
Magnetics, IEEE Transactions on
