Observation of micromagnetic structure in computer hard disks by Lorentz transmission electron microscopy

K. Tang; M. R. Visokay; R. Sinclair; C. A. Ross; R. Ranjan; T. Yamashita

doi:10.1557/proc-384-21

Observation of micromagnetic structure in computer hard disks by Lorentz transmission electron microscopy

K. Tang^*, M. R. Visokay, R. Sinclair, C. A. Ross, R. Ranjan, T. Yamashita

^*Corresponding author for this work

Research output: Contribution to journal › Conference article published in journal › peer-review

2 Citations (Scopus)

Abstract

We have observed micromagnetic structure in real computer hard disks with the typical structure of C/Co alloy/Cr/NiP/Al(substrate) using Lorentz transmission electron microscopy (LTEM). A chemical etching method was introduced to successfully prepare LTEM specimens directly from the computer hard disks with both smooth and mechanically textured substrates. Micromagnetic structural features, e.g., ripples and vortices, were studied in disks in bits-written, ac-demagnetized, and saturation remanent magnetic states.

Original language	English
Pages (from-to)	21-26
Number of pages	6
Journal	Materials Research Society Symposium - Proceedings
Volume	384
DOIs	https://doi.org/10.1557/proc-384-21
Publication status	Published - 1995
Externally published	Yes
Event	Proceedings of the 1995 MRS Spring Meeting - San Francisco, CA, USA Duration: 17 Apr 1995 → 21 Apr 1995

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title = "Observation of micromagnetic structure in computer hard disks by Lorentz transmission electron microscopy",

abstract = "We have observed micromagnetic structure in real computer hard disks with the typical structure of C/Co alloy/Cr/NiP/Al(substrate) using Lorentz transmission electron microscopy (LTEM). A chemical etching method was introduced to successfully prepare LTEM specimens directly from the computer hard disks with both smooth and mechanically textured substrates. Micromagnetic structural features, e.g., ripples and vortices, were studied in disks in bits-written, ac-demagnetized, and saturation remanent magnetic states.",

author = "K. Tang and Visokay, \{M. R.\} and R. Sinclair and Ross, \{C. A.\} and R. Ranjan and T. Yamashita",

year = "1995",

doi = "10.1557/proc-384-21",

language = "English",

volume = "384",

pages = "21--26",

journal = "Materials Research Society Symposium - Proceedings",

issn = "0272-9172",

publisher = "Materials Research Society",

note = "Proceedings of the 1995 MRS Spring Meeting ; Conference date: 17-04-1995 Through 21-04-1995",

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TY - JOUR

T1 - Observation of micromagnetic structure in computer hard disks by Lorentz transmission electron microscopy

AU - Tang, K.

AU - Visokay, M. R.

AU - Sinclair, R.

AU - Ross, C. A.

AU - Ranjan, R.

AU - Yamashita, T.

PY - 1995

Y1 - 1995

N2 - We have observed micromagnetic structure in real computer hard disks with the typical structure of C/Co alloy/Cr/NiP/Al(substrate) using Lorentz transmission electron microscopy (LTEM). A chemical etching method was introduced to successfully prepare LTEM specimens directly from the computer hard disks with both smooth and mechanically textured substrates. Micromagnetic structural features, e.g., ripples and vortices, were studied in disks in bits-written, ac-demagnetized, and saturation remanent magnetic states.

AB - We have observed micromagnetic structure in real computer hard disks with the typical structure of C/Co alloy/Cr/NiP/Al(substrate) using Lorentz transmission electron microscopy (LTEM). A chemical etching method was introduced to successfully prepare LTEM specimens directly from the computer hard disks with both smooth and mechanically textured substrates. Micromagnetic structural features, e.g., ripples and vortices, were studied in disks in bits-written, ac-demagnetized, and saturation remanent magnetic states.

UR - https://www.webofscience.com/wos/woscc/full-record/WOS:A1995BE33K00004

UR - https://www.scopus.com/pages/publications/0029514789

U2 - 10.1557/proc-384-21

DO - 10.1557/proc-384-21

M3 - Conference article published in journal

SN - 0272-9172

VL - 384

SP - 21

EP - 26

JO - Materials Research Society Symposium - Proceedings

JF - Materials Research Society Symposium - Proceedings

T2 - Proceedings of the 1995 MRS Spring Meeting

Y2 - 17 April 1995 through 21 April 1995

ER -

Observation of micromagnetic structure in computer hard disks by Lorentz transmission electron microscopy

Abstract

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