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Nanomechanical Property Measurements for Sub-10 nm Thick Solid Films with Application in Magnetic Storage

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If you have a question about this talk, please contact Julie Bazin.

In the magnetic storage industry, thin film carbon overcoats play a critical role in reducing magnetic and physical spacing between the recording slider and the rotating disk so that the information stored per unit area is maximized.

Thin film carbon overcoats have been improved such that they exhibit higher hardness with lower thickness of few nanometers and still are able to perform reliably.

In this presentation, nanoindentation and nanoscratch techniques to measure nanomechanical properties, namely hardness, elastic modulus and shear strength of thin solid films will be presented along with a newly developed high resolution force transducer and a correction to the classic Oliver-Pharr nanoindentation technique.

It was shown that the properties and wear behavior of sub-10 nm thick film carbon overcoats were reliably measured. These techniques could be applied to different thin solid films on substrates, and they are not restricted to magnetic storage systems.

This talk is part of the Engineering Department Mechanics and Materials Seminar series.

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