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Astudy on the sensitivity of a spin valve with conetic-based free layers

An exchange-biased spin valve with Conetic-based free layers of Co 90 Fe 10 , Co 90 Fe 10 /Conetic and Conetic was investigated. The spin valve with the Co 90 Fe 10 free layer showed the highest giant magnetoresistance (GMR) ratio of 4% but showed the lowest normalized sensitivity of 0.02 Oe -1 . Th... Full description

Journal Title: Japanese Journal of Applied Physics 2012, Vol.51(3R), p.033002
Main Author: Son, Jangyup
Other Authors: Lim, Jongkoo , Ko, Jungho , Kim, Sanghoon , Lee, Soogil , Hong, Jongill
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: ISSN: ; E-ISSN: ; DOI: 10.1143/JJAP.51.033002
Link: http://dx.doi.org/10.1143/JJAP.51.033002
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recordid: iop10.1143/JJAP.51.033002
title: Astudy on the sensitivity of a spin valve with conetic-based free layers
format: Article
creator:
  • Son, Jangyup
  • Lim, Jongkoo
  • Ko, Jungho
  • Kim, Sanghoon
  • Lee, Soogil
  • Hong, Jongill
subjects:
  • Engineering
  • Physics
ispartof: Japanese Journal of Applied Physics, 2012, Vol.51(3R), p.033002
description: An exchange-biased spin valve with Conetic-based free layers of Co 90 Fe 10 , Co 90 Fe 10 /Conetic and Conetic was investigated. The spin valve with the Co 90 Fe 10 free layer showed the highest giant magnetoresistance (GMR) ratio of 4% but showed the lowest normalized sensitivity of 0.02 Oe -1 . The GMR ratio of 3% and the normalized sensitivity of 0.07 Oe -1 were obtained for the spin valve with the Co 90 Fe 10 /Conetic free layer after annealing. The spin valve having the Conetic free layer showed softer magnetic properties and well-defined smaller anisotropy than the other spin valves. Though the spin valve showed the lowest GMR of 0.4% after annealing, it showed the highest normalized sensitivity of 0.14 Oe -1 . Our study shows that further improvement in MR response of spin valves with Conetic-based free layers can make a spin valve sensor promising for detecting extremely low fields.
language: eng
source:
identifier: ISSN: ; E-ISSN: ; DOI: 10.1143/JJAP.51.033002
fulltext: fulltext
url: Link


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descriptionAn exchange-biased spin valve with Conetic-based free layers of Co 90 Fe 10 , Co 90 Fe 10 /Conetic and Conetic was investigated. The spin valve with the Co 90 Fe 10 free layer showed the highest giant magnetoresistance (GMR) ratio of 4% but showed the lowest normalized sensitivity of 0.02 Oe -1 . The GMR ratio of 3% and the normalized sensitivity of 0.07 Oe -1 were obtained for the spin valve with the Co 90 Fe 10 /Conetic free layer after annealing. The spin valve having the Conetic free layer showed softer magnetic properties and well-defined smaller anisotropy than the other spin valves. Though the spin valve showed the lowest GMR of 0.4% after annealing, it showed the highest normalized sensitivity of 0.14 Oe -1 . Our study shows that further improvement in MR response of spin valves with Conetic-based free layers can make a spin valve sensor promising for detecting extremely low fields.
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titleA Study on the Sensitivity of a Spin Valve with Conetic-Based Free Layers
descriptionAn exchange-biased spin valve with Conetic-based free layers of Co 90 Fe 10 , Co 90 Fe 10 /Conetic and Conetic was investigated. The spin valve with the Co 90 Fe 10 free layer showed the highest giant magnetoresistance (GMR) ratio of 4% but showed the lowest normalized sensitivity of 0.02 Oe -1 . The GMR ratio of 3% and the normalized sensitivity of 0.07 Oe -1 were obtained for the spin valve with the Co 90 Fe 10 /Conetic free layer after annealing. The spin valve having the Conetic free layer showed softer magnetic properties and well-defined smaller anisotropy than the other spin valves. Though the spin valve showed the lowest GMR of 0.4% after annealing, it showed the highest normalized sensitivity of 0.14 Oe -1 . Our study shows that further improvement in MR response of spin valves with Conetic-based free layers can make a spin valve sensor promising for detecting extremely low fields.
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abstractAn exchange-biased spin valve with Conetic-based free layers of Co 90 Fe 10 , Co 90 Fe 10 /Conetic and Conetic was investigated. The spin valve with the Co 90 Fe 10 free layer showed the highest giant magnetoresistance (GMR) ratio of 4% but showed the lowest normalized sensitivity of 0.02 Oe -1 . The GMR ratio of 3% and the normalized sensitivity of 0.07 Oe -1 were obtained for the spin valve with the Co 90 Fe 10 /Conetic free layer after annealing. The spin valve having the Conetic free layer showed softer magnetic properties and well-defined smaller anisotropy than the other spin valves. Though the spin valve showed the lowest GMR of 0.4% after annealing, it showed the highest normalized sensitivity of 0.14 Oe -1 . Our study shows that further improvement in MR response of spin valves with Conetic-based free layers can make a spin valve sensor promising for detecting extremely low fields.
doi10.1143/JJAP.51.033002
issn00214922
eissn13474065
date2012-03