Scanning magneto-resistance microscopy with FIB trimmed yoke-type magneto-resistive tape heads

G.N. Phillips; M. Eisenberg; N. Persat; E.A. Draaisma; L. Abelmann; J.C. Lodder

doi:10.1016/S0924-4247(01)00476-9

Scanning magneto-resistance microscopy with FIB trimmed yoke-type magneto-resistive tape heads

G.N. Phillips, M. Eisenberg, N. Persat, E.A. Draaisma, L. Abelmann, J.C. Lodder

Research output: Contribution to journal › Article › Academic › peer-review

1 Citation (Scopus)

Abstract

Scanning magneto-resistance microscopy has been performed with thin film yoke-type magneto-resistive tape heads possessing eight channels. The read flux guides of these channels have been trimmed down from 24 μm to widths varying between 5.5 μm and 148 nm by focused ion beam milling with Ga+ ions. Tracks written on ME tape with an untrimmed write channel have been successfully imaged with all the trimmed channels. A significant attenuation (>5%) of read-back voltage across the MR sensor is only observed for channels possessing flux guides trimmed by 77% to 5.5 μm. A 52% (6 dB) drop in read-back voltage is observed for a channel possessing a flux guide trimmed by 99.4% to 148 nm.

Original language	English
Pages (from-to)	34-38
Number of pages	5
Journal	Sensors and actuators. A: Physical
Volume	91
Issue number	1-2
DOIs	https://doi.org/10.1016/S0924-4247(01)00476-9
Publication status	Published - 2001

Keywords

SMI-TST: From 2006 in EWI-TST
TST-uSPAM: micro Scanning Probe Array Memory
SMI-REC: RECORDING

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10.1016/S0924-4247(01)00476-9

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title = "Scanning magneto-resistance microscopy with FIB trimmed yoke-type magneto-resistive tape heads",

abstract = "Scanning magneto-resistance microscopy has been performed with thin film yoke-type magneto-resistive tape heads possessing eight channels. The read flux guides of these channels have been trimmed down from 24 μm to widths varying between 5.5 μm and 148 nm by focused ion beam milling with Ga+ ions. Tracks written on ME tape with an untrimmed write channel have been successfully imaged with all the trimmed channels. A significant attenuation (>5%) of read-back voltage across the MR sensor is only observed for channels possessing flux guides trimmed by 77% to 5.5 μm. A 52% (6 dB) drop in read-back voltage is observed for a channel possessing a flux guide trimmed by 99.4% to 148 nm.",

keywords = "SMI-TST: From 2006 in EWI-TST, TST-uSPAM: micro Scanning Probe Array Memory, SMI-REC: RECORDING",

author = "G.N. Phillips and M. Eisenberg and N. Persat and E.A. Draaisma and L. Abelmann and J.C. Lodder",

note = "Imported from SMI Reference manager",

year = "2001",

doi = "10.1016/S0924-4247(01)00476-9",

language = "English",

volume = "91",

pages = "34--38",

journal = "Sensors and actuators. A: Physical",

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T1 - Scanning magneto-resistance microscopy with FIB trimmed yoke-type magneto-resistive tape heads

AU - Phillips, G.N.

AU - Eisenberg, M.

AU - Persat, N.

AU - Draaisma, E.A.

AU - Abelmann, L.

AU - Lodder, J.C.

N1 - Imported from SMI Reference manager

PY - 2001

Y1 - 2001

N2 - Scanning magneto-resistance microscopy has been performed with thin film yoke-type magneto-resistive tape heads possessing eight channels. The read flux guides of these channels have been trimmed down from 24 μm to widths varying between 5.5 μm and 148 nm by focused ion beam milling with Ga+ ions. Tracks written on ME tape with an untrimmed write channel have been successfully imaged with all the trimmed channels. A significant attenuation (>5%) of read-back voltage across the MR sensor is only observed for channels possessing flux guides trimmed by 77% to 5.5 μm. A 52% (6 dB) drop in read-back voltage is observed for a channel possessing a flux guide trimmed by 99.4% to 148 nm.

AB - Scanning magneto-resistance microscopy has been performed with thin film yoke-type magneto-resistive tape heads possessing eight channels. The read flux guides of these channels have been trimmed down from 24 μm to widths varying between 5.5 μm and 148 nm by focused ion beam milling with Ga+ ions. Tracks written on ME tape with an untrimmed write channel have been successfully imaged with all the trimmed channels. A significant attenuation (>5%) of read-back voltage across the MR sensor is only observed for channels possessing flux guides trimmed by 77% to 5.5 μm. A 52% (6 dB) drop in read-back voltage is observed for a channel possessing a flux guide trimmed by 99.4% to 148 nm.

KW - SMI-TST: From 2006 in EWI-TST

KW - TST-uSPAM: micro Scanning Probe Array Memory

KW - SMI-REC: RECORDING

U2 - 10.1016/S0924-4247(01)00476-9

DO - 10.1016/S0924-4247(01)00476-9

M3 - Article

VL - 91

SP - 34

EP - 38

JO - Sensors and actuators. A: Physical

JF - Sensors and actuators. A: Physical

SN - 0924-4247

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