Very large GMR of spin valve with specularly reflective layers

Jongill Hong; Hitoshi Kanai; Yuji Uehara

doi:10.1109/INTMAG.2002.1000945

Very large GMR of spin valve with specularly reflective layers

Jongill Hong, Hitoshi Kanai, Yuji Uehara

Department of Materials Science and Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Our specular spin valves fabricated by a novel technique have provided excellent head performance suitable for an ultra-high recording density. We previously used a spin valve with an oxide capping layer (a so-called single specular spin valve) for the demonstration of 56.1 Gb/in². The single specular spin valve was magnetically soft and its GMR value reached over 12%. However, the specularity was still low at the interface between the pinned layer and the Cu spacer. Embedding another oxide layer into the pinned layer (creating a so-called double specular spin valve), we enhanced the specularity and this led to a GMR value of over 15%. As a matter of fact, we increased the output of the read head with this double specular spin valve by more than 50% over that of the read head used in the demonstration. Therefore, we demonstrated that the head with the double specular spin valve can be used for an areal density of 106.4 Gb/in² in magnetic recording, with the help of advanced media and integration techniques.

Original language	English
Title of host publication	INTERMAG Europe 2002 - IEEE International Magnetics Conference
Editors	J. Fidler, B. Hillebrands, C. Ross, D. Weller, L. Folks, E. Hill, M. Vazquez Villalabeitia, J. A. Bain, Jo De Boeck, R. Wood
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	0780373650, 9780780373655
DOIs	https://doi.org/10.1109/INTMAG.2002.1000945
Publication status	Published - 2002
Event	2002 IEEE International Magnetics Conference, INTERMAG Europe 2002 - Amsterdam, Netherlands Duration: 2002 Apr 28 → 2002 May 2

Publication series

Name	INTERMAG Europe 2002 - IEEE International Magnetics Conference

Other

Other	2002 IEEE International Magnetics Conference, INTERMAG Europe 2002
Country/Territory	Netherlands
City	Amsterdam
Period	02/4/28 → 02/5/2

Bibliographical note

Publisher Copyright:
©2002 IEEE.

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering
Surfaces, Coatings and Films

Access to Document

10.1109/INTMAG.2002.1000945

Cite this

Hong, J., Kanai, H., & Uehara, Y. (2002). Very large GMR of spin valve with specularly reflective layers. In J. Fidler, B. Hillebrands, C. Ross, D. Weller, L. Folks, E. Hill, M. Vazquez Villalabeitia, J. A. Bain, J. De Boeck, & R. Wood (Eds.), INTERMAG Europe 2002 - IEEE International Magnetics Conference [1000945] (INTERMAG Europe 2002 - IEEE International Magnetics Conference). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/INTMAG.2002.1000945

Hong, Jongill ; Kanai, Hitoshi ; Uehara, Yuji. / Very large GMR of spin valve with specularly reflective layers. INTERMAG Europe 2002 - IEEE International Magnetics Conference. editor / J. Fidler ; B. Hillebrands ; C. Ross ; D. Weller ; L. Folks ; E. Hill ; M. Vazquez Villalabeitia ; J. A. Bain ; Jo De Boeck ; R. Wood. Institute of Electrical and Electronics Engineers Inc., 2002. (INTERMAG Europe 2002 - IEEE International Magnetics Conference).

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title = "Very large GMR of spin valve with specularly reflective layers",

abstract = "Our specular spin valves fabricated by a novel technique have provided excellent head performance suitable for an ultra-high recording density. We previously used a spin valve with an oxide capping layer (a so-called single specular spin valve) for the demonstration of 56.1 Gb/in2. The single specular spin valve was magnetically soft and its GMR value reached over 12%. However, the specularity was still low at the interface between the pinned layer and the Cu spacer. Embedding another oxide layer into the pinned layer (creating a so-called double specular spin valve), we enhanced the specularity and this led to a GMR value of over 15%. As a matter of fact, we increased the output of the read head with this double specular spin valve by more than 50% over that of the read head used in the demonstration. Therefore, we demonstrated that the head with the double specular spin valve can be used for an areal density of 106.4 Gb/in2 in magnetic recording, with the help of advanced media and integration techniques.",

author = "Jongill Hong and Hitoshi Kanai and Yuji Uehara",

note = "Publisher Copyright: {\textcopyright}2002 IEEE.; 2002 IEEE International Magnetics Conference, INTERMAG Europe 2002 ; Conference date: 28-04-2002 Through 02-05-2002",

year = "2002",

doi = "10.1109/INTMAG.2002.1000945",

language = "English",

series = "INTERMAG Europe 2002 - IEEE International Magnetics Conference",

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editor = "J. Fidler and B. Hillebrands and C. Ross and D. Weller and L. Folks and E. Hill and {Vazquez Villalabeitia}, M. and Bain, {J. A.} and {De Boeck}, Jo and R. Wood",

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Hong, J, Kanai, H & Uehara, Y 2002, Very large GMR of spin valve with specularly reflective layers. in J Fidler, B Hillebrands, C Ross, D Weller, L Folks, E Hill, M Vazquez Villalabeitia, JA Bain, J De Boeck & R Wood (eds), INTERMAG Europe 2002 - IEEE International Magnetics Conference., 1000945, INTERMAG Europe 2002 - IEEE International Magnetics Conference, Institute of Electrical and Electronics Engineers Inc., 2002 IEEE International Magnetics Conference, INTERMAG Europe 2002, Amsterdam, Netherlands, 02/4/28. https://doi.org/10.1109/INTMAG.2002.1000945

Very large GMR of spin valve with specularly reflective layers. / Hong, Jongill; Kanai, Hitoshi; Uehara, Yuji.

INTERMAG Europe 2002 - IEEE International Magnetics Conference. ed. / J. Fidler; B. Hillebrands; C. Ross; D. Weller; L. Folks; E. Hill; M. Vazquez Villalabeitia; J. A. Bain; Jo De Boeck; R. Wood. Institute of Electrical and Electronics Engineers Inc., 2002. 1000945 (INTERMAG Europe 2002 - IEEE International Magnetics Conference).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Very large GMR of spin valve with specularly reflective layers

AU - Hong, Jongill

AU - Kanai, Hitoshi

AU - Uehara, Yuji

PY - 2002

Y1 - 2002

N2 - Our specular spin valves fabricated by a novel technique have provided excellent head performance suitable for an ultra-high recording density. We previously used a spin valve with an oxide capping layer (a so-called single specular spin valve) for the demonstration of 56.1 Gb/in2. The single specular spin valve was magnetically soft and its GMR value reached over 12%. However, the specularity was still low at the interface between the pinned layer and the Cu spacer. Embedding another oxide layer into the pinned layer (creating a so-called double specular spin valve), we enhanced the specularity and this led to a GMR value of over 15%. As a matter of fact, we increased the output of the read head with this double specular spin valve by more than 50% over that of the read head used in the demonstration. Therefore, we demonstrated that the head with the double specular spin valve can be used for an areal density of 106.4 Gb/in2 in magnetic recording, with the help of advanced media and integration techniques.

AB - Our specular spin valves fabricated by a novel technique have provided excellent head performance suitable for an ultra-high recording density. We previously used a spin valve with an oxide capping layer (a so-called single specular spin valve) for the demonstration of 56.1 Gb/in2. The single specular spin valve was magnetically soft and its GMR value reached over 12%. However, the specularity was still low at the interface between the pinned layer and the Cu spacer. Embedding another oxide layer into the pinned layer (creating a so-called double specular spin valve), we enhanced the specularity and this led to a GMR value of over 15%. As a matter of fact, we increased the output of the read head with this double specular spin valve by more than 50% over that of the read head used in the demonstration. Therefore, we demonstrated that the head with the double specular spin valve can be used for an areal density of 106.4 Gb/in2 in magnetic recording, with the help of advanced media and integration techniques.

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T3 - INTERMAG Europe 2002 - IEEE International Magnetics Conference

BT - INTERMAG Europe 2002 - IEEE International Magnetics Conference

A2 - Fidler, J.

A2 - Hillebrands, B.

A2 - Ross, C.

A2 - Weller, D.

A2 - Folks, L.

A2 - Hill, E.

A2 - Vazquez Villalabeitia, M.

A2 - Bain, J. A.

A2 - De Boeck, Jo

A2 - Wood, R.

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 2002 IEEE International Magnetics Conference, INTERMAG Europe 2002

Y2 - 28 April 2002 through 2 May 2002

ER -

Hong J, Kanai H, Uehara Y. Very large GMR of spin valve with specularly reflective layers. In Fidler J, Hillebrands B, Ross C, Weller D, Folks L, Hill E, Vazquez Villalabeitia M, Bain JA, De Boeck J, Wood R, editors, INTERMAG Europe 2002 - IEEE International Magnetics Conference. Institute of Electrical and Electronics Engineers Inc. 2002. 1000945. (INTERMAG Europe 2002 - IEEE International Magnetics Conference). doi: 10.1109/INTMAG.2002.1000945

Very large GMR of spin valve with specularly reflective layers

Abstract

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