Base for magnetic recording medium, and HDD

Base for magnetic recording medium, and HDD

A base for a magnetic recording medium, includes a substrate made of an Al alloy and having a surface, and a film made of a NiP-based alloy and plated on the surface of the substrate. The film has a thickness of 7 μm or greater, and a ratio E/ρ is 29 or greater, where E [GPa] denotes the Young'...

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Hauptverfasser: Murase, Isao, Sugimoto, Kiminori
Format: Patent
Sprache:eng
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INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
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creator Murase, Isao
Sugimoto, Kiminori
description A base for a magnetic recording medium, includes a substrate made of an Al alloy and having a surface, and a film made of a NiP-based alloy and plated on the surface of the substrate. The film has a thickness of 7 μm or greater, and a ratio E/ρ is 29 or greater, where E [GPa] denotes the Young's modulus of the substrate, and ρ [g/cm3] denotes a density of the substrate.
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subjects INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
title Base for magnetic recording medium, and HDD
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