Co/CoO hybrid film by post annealing

J. B. Yi; J. Ding

doi:10.4028/www.scientific.net/SSP.111.175

Co/CoO hybrid film by post annealing

J. B. Yi, J. Ding

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

1 Scopus citations

Abstract

Co/CoO hybrid films are prepared by annealing Co films with various ratio of oxygen of O2/Ar mixture. The nanocomposite film shows a relatively large exchange bias (5.32 kOe) and coercivity (HC-: 6.17 kOe) taken at 80 K when formed by post annealing at 473 K under 3% O₂ for 1h. Both are much larger than that of Co/CoO nanocomposite by reactive sputtering with an oxygen partial pressure. Investigation shows that the formation of interface by post annealing is of importance for the large exchange bias and enhanced coercivity. The surface CoO, grain size of CoO and composition may also contribute to magnetic properties of the post annealing film.

Original language	English
Title of host publication	Science and Technology of Hybrid Materials
Editors	Cheng-Jun Sun, Gan-Moog Chow, Jun Ding, Manoj Gupta, Lynn Kurihara, Lawrence Kabacoff
Publisher	Trans Tech Publications Ltd
Pages	175-178
Number of pages	4
ISBN (Print)	9783908451181
DOIs	https://doi.org/10.4028/www.scientific.net/SSP.111.175
State	Published - 2006
Externally published	Yes
Event	Symposium S Science and Technology of Hybrid Materials, 2005: 3rd International Conference on Materials for Advanced Technologies, ICMAT 2005 and International Union of Materials Research Societies-9th International Conference on Advanced Materials, IUMRS-ICAM 2005 - Singapore, Singapore Duration: 3 Jul 2005 → 8 Jul 2005

Publication series

Name	Solid State Phenomena
Volume	111
ISSN (Print)	1012-0394
ISSN (Electronic)	1662-9779

Conference

Conference	Symposium S Science and Technology of Hybrid Materials, 2005: 3rd International Conference on Materials for Advanced Technologies, ICMAT 2005 and International Union of Materials Research Societies-9th International Conference on Advanced Materials, IUMRS-ICAM 2005
Country/Territory	Singapore
City	Singapore
Period	3/07/05 → 8/07/05

Bibliographical note

Publisher Copyright:
© (2006) Trans Tech Publications, Switzerland.

Keywords

Co/CoO hybrid
Exchange bias and sputtering
Post annealing

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
General Materials Science
Condensed Matter Physics

Access to Document

10.4028/www.scientific.net/SSP.111.175

Cite this

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title = "Co/CoO hybrid film by post annealing",

abstract = "Co/CoO hybrid films are prepared by annealing Co films with various ratio of oxygen of O2/Ar mixture. The nanocomposite film shows a relatively large exchange bias (5.32 kOe) and coercivity (HC-: 6.17 kOe) taken at 80 K when formed by post annealing at 473 K under 3% O2 for 1h. Both are much larger than that of Co/CoO nanocomposite by reactive sputtering with an oxygen partial pressure. Investigation shows that the formation of interface by post annealing is of importance for the large exchange bias and enhanced coercivity. The surface CoO, grain size of CoO and composition may also contribute to magnetic properties of the post annealing film.",

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series = "Solid State Phenomena",

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Yi, JB & Ding, J 2006, Co/CoO hybrid film by post annealing. in C-J Sun, G-M Chow, J Ding, M Gupta, L Kurihara & L Kabacoff (eds), Science and Technology of Hybrid Materials. Solid State Phenomena, vol. 111, Trans Tech Publications Ltd, pp. 175-178, Symposium S Science and Technology of Hybrid Materials, 2005: 3rd International Conference on Materials for Advanced Technologies, ICMAT 2005 and International Union of Materials Research Societies-9th International Conference on Advanced Materials, IUMRS-ICAM 2005, Singapore, Singapore, 3/07/05. https://doi.org/10.4028/www.scientific.net/SSP.111.175

Co/CoO hybrid film by post annealing. / Yi, J. B.; Ding, J.
Science and Technology of Hybrid Materials. ed. / Cheng-Jun Sun; Gan-Moog Chow; Jun Ding; Manoj Gupta; Lynn Kurihara; Lawrence Kabacoff. Trans Tech Publications Ltd, 2006. p. 175-178 (Solid State Phenomena; Vol. 111).

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

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AB - Co/CoO hybrid films are prepared by annealing Co films with various ratio of oxygen of O2/Ar mixture. The nanocomposite film shows a relatively large exchange bias (5.32 kOe) and coercivity (HC-: 6.17 kOe) taken at 80 K when formed by post annealing at 473 K under 3% O2 for 1h. Both are much larger than that of Co/CoO nanocomposite by reactive sputtering with an oxygen partial pressure. Investigation shows that the formation of interface by post annealing is of importance for the large exchange bias and enhanced coercivity. The surface CoO, grain size of CoO and composition may also contribute to magnetic properties of the post annealing film.

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Co/CoO hybrid film by post annealing

Abstract

Publication series

Conference

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

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Cite this