NOL specular spin-valve heads using an ultrathin CoFe free layer

Hideaki Fukuzawa; Katsuhiko Koi; Hiroshi Tomita; Hiromi Niu Fuke; Yuzo Kamiguchi; Hitoshi Iwasaki; Masashi Sahashi

doi:10.1016/S0304-8853(01)00339-0

NOL specular spin-valve heads using an ultrathin CoFe free layer

Hideaki Fukuzawa, Katsuhiko Koi, Hiroshi Tomita, Hiromi Niu Fuke, Yuzo Kamiguchi, Hitoshi Iwasaki, Masashi Sahashi

ENG - Electronic Engineering

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

23 Citations (Scopus)

Abstract

This paper reports the film and head performance of specular spin valves with nano-oxide layer (NOL-SPSV). A large MR ratio of 17% was obtained by using an ultrathin CoFe free layer with a high conductance Cu layer, which decreases the sense current field of a free layer and brings good soft magnetic characteristics. Prototype heads with a read track width of 0.47-0.61 μm were fabricated by using NOL-SPSV films with an MR ratio of 14-15%, H_ua∼400 Oe, and H_c∼5 Oe. High output signal voltage of 8-11 mV/μm was realized in the NOL-SPSV heads.

Original language	English
Pages (from-to)	208-212
Number of pages	5
Journal	Journal of Magnetism and Magnetic Materials
Volume	235
Issue number	1-3
DOIs	https://doi.org/10.1016/S0304-8853(01)00339-0
Publication status	Published - 2001 Oct 1
Event	Proceedings of the 5th Perpendicular Magnetic Recording Conference (PMRC 2000) - Sendai, Japan Duration: 2000 Oct 23 → 2000 Oct 26

Keywords

Free layer
Head performance
NOL
Specular spin valve

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1016/S0304-8853(01)00339-0

Cite this

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title = "NOL specular spin-valve heads using an ultrathin CoFe free layer",

abstract = "This paper reports the film and head performance of specular spin valves with nano-oxide layer (NOL-SPSV). A large MR ratio of 17% was obtained by using an ultrathin CoFe free layer with a high conductance Cu layer, which decreases the sense current field of a free layer and brings good soft magnetic characteristics. Prototype heads with a read track width of 0.47-0.61 μm were fabricated by using NOL-SPSV films with an MR ratio of 14-15%, Hua∼400 Oe, and Hc∼5 Oe. High output signal voltage of 8-11 mV/μm was realized in the NOL-SPSV heads.",

keywords = "Free layer, Head performance, NOL, Specular spin valve",

author = "Hideaki Fukuzawa and Katsuhiko Koi and Hiroshi Tomita and Fuke, {Hiromi Niu} and Yuzo Kamiguchi and Hitoshi Iwasaki and Masashi Sahashi",

year = "2001",

month = oct,

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doi = "10.1016/S0304-8853(01)00339-0",

language = "English",

volume = "235",

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issn = "0304-8853",

publisher = "Elsevier",

number = "1-3",

note = "Proceedings of the 5th Perpendicular Magnetic Recording Conference (PMRC 2000) ; Conference date: 23-10-2000 Through 26-10-2000",

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TY - JOUR

T1 - NOL specular spin-valve heads using an ultrathin CoFe free layer

AU - Fukuzawa, Hideaki

AU - Koi, Katsuhiko

AU - Tomita, Hiroshi

AU - Fuke, Hiromi Niu

AU - Kamiguchi, Yuzo

AU - Iwasaki, Hitoshi

AU - Sahashi, Masashi

PY - 2001/10/1

Y1 - 2001/10/1

N2 - This paper reports the film and head performance of specular spin valves with nano-oxide layer (NOL-SPSV). A large MR ratio of 17% was obtained by using an ultrathin CoFe free layer with a high conductance Cu layer, which decreases the sense current field of a free layer and brings good soft magnetic characteristics. Prototype heads with a read track width of 0.47-0.61 μm were fabricated by using NOL-SPSV films with an MR ratio of 14-15%, Hua∼400 Oe, and Hc∼5 Oe. High output signal voltage of 8-11 mV/μm was realized in the NOL-SPSV heads.

AB - This paper reports the film and head performance of specular spin valves with nano-oxide layer (NOL-SPSV). A large MR ratio of 17% was obtained by using an ultrathin CoFe free layer with a high conductance Cu layer, which decreases the sense current field of a free layer and brings good soft magnetic characteristics. Prototype heads with a read track width of 0.47-0.61 μm were fabricated by using NOL-SPSV films with an MR ratio of 14-15%, Hua∼400 Oe, and Hc∼5 Oe. High output signal voltage of 8-11 mV/μm was realized in the NOL-SPSV heads.

KW - Free layer

KW - Head performance

KW - NOL

KW - Specular spin valve

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U2 - 10.1016/S0304-8853(01)00339-0

DO - 10.1016/S0304-8853(01)00339-0

M3 - Conference article

AN - SCOPUS:0035477327

VL - 235

SP - 208

EP - 212

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

SN - 0304-8853

IS - 1-3

T2 - Proceedings of the 5th Perpendicular Magnetic Recording Conference (PMRC 2000)

Y2 - 23 October 2000 through 26 October 2000

ER -

NOL specular spin-valve heads using an ultrathin CoFe free layer

Abstract

Keywords

ASJC Scopus subject areas

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