Magnetic Erasures Due to Impact Induced Interfacial Heating and Magnetostriction

M. Suk; P. Dennig; D. Gillis

doi:10.1115/1.555352

Journal of Tribology | Volume 122 | Issue 1 | TECHNICAL PAPERS

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TECHNICAL PAPERS

Magnetic Erasures Due to Impact Induced Interfacial Heating and Magnetostriction

M. Suk, P. Dennig and D. Gillis

[+] Author and Article Information

M. Suk, P. Dennig, D. Gillis

International Business Machines, Storage Systems Division, San Jose, CA 95193 suk@technologist.com

J. Tribol 122(1), 264-268 (May 11, 1999) (5 pages) doi:10.1115/1.555352 History: Received November 10, 1998; Revised May 11, 1999

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Figures

General layout of the tester used in the experiment

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Readback signal after dropping a ball from 1 mm in height on an Al-Mg disk with the disk speed of 34 m/s

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Readback signal after rewrite over the center erased track shown in Fig. 2

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Readback signal after dropping a ball from 2 mm in height on an Al-Mg disk with disk speed of 34 m/s

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Readback signal after rewrite over the center erased track shown in Fig. 4

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(a) MFM map and section line across the damaged area shown in Fig. 4. (b) Section line across adjacent to the damaged area.

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Readback signal after dropping a ball from 5.3 mm high on a glass disk with disk speed of 34 m/s

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(a) Hot probe set at 315°C and moved across a glass disk. (b) Hot probe temperature set at 420°C.

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Hot probe set at 420°C and moved across an Al-Mg disk

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Suk MM, Dennig PP, Gillis DD. Magnetic Erasures Due to Impact Induced Interfacial Heating and Magnetostriction. ASME. J. Tribol. 1999;122(1):264-268. doi:10.1115/1.555352.

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Magnetic Erasures Due to Impact Induced Interfacial Heating and Magnetostriction

References

Figures

General layout of the tester used in the experiment

Readback signal after dropping a ball from 1 mm in height on an Al-Mg disk with the disk speed of 34 m/s

Readback signal after rewrite over the center erased track shown in Fig. 2

Readback signal after dropping a ball from 2 mm in height on an Al-Mg disk with disk speed of 34 m/s

Readback signal after rewrite over the center erased track shown in Fig. 4

(a) MFM map and section line across the damaged area shown in Fig. 4. (b) Section line across adjacent to the damaged area.

Readback signal after dropping a ball from 5.3 mm high on a glass disk with disk speed of 34 m/s

Contour plot of readback signal shown in Fig. 7

Readback signal after rewrite over the center erased track shown in Fig. 7

Drop height versus disk linear speed and their effect on erasure on glass disks

(a) Hot probe set at 315°C and moved across a glass disk. (b) Hot probe temperature set at 420°C.

Hot probe set at 420°C and moved across an Al-Mg disk

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