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Platters made from several material ferromagnetic and nonmagnetic material which are:
1 : perpendicular material cobalt and platinum and Cr
2: coated material Al2O3
Weight of platinum about 10 % to 35 %
Wiki User
∙ 14y ago
Wiki User
∙ 11y agoAluminum, ceramic and or glass.
A bit more:
Platters are typically made using an aluminium or glass and ceramic substrate. In disk manufacturing, a thin coating is deposited on both sides of the substrate, mostly by a vacuum deposition process called magnetron sputtering.
Wiki User
∙ 17y agoTypically, a very fine iron oxide coating is put on the surface of disks, but it can be just about any medium that will maintain a magnetic field.
Wiki User
∙ 14y agoHDD platters are usually made of aluminum, glass, or ceramic.
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