Abstract
A comparison of glass and polymer substrates for rare earth-transition metal magneto-optical recording media has been made. Both rigid (glass and polycarbonate) and flexible (polyester) substrates were investigated. The magnetic, optical and adhesion properties of the deposited films were measured and compared. Film magneto-optical properties and film adhesion were investigated. Films on rigid polycarbonate substrates have been found to have higher coercivities and coercivities more sensitive to the deposition conditions than films deposited on glass substrates under identical conditions. Coercivity variations are thought to be due mainly to substrate surface effects. In flexible tape substrates, film compensation temperature and compositions are more dependent on the substrate. Magneto-optic films on all substrates had similar Kerr rotation. The film adhesion on glass substrates was found to improve with substrate etching prior to deposition while the adhesion on polycarbonate substrates suffered under substrate etching. The adhesion of films on tape substrates was found to be well above a proposed standard for magnetic tape adhesion.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
