Co/CoO hybrid film by post annealing

J. B. Yi; J. Ding

doi:10.4028/3-908451-18-3.175

Co/CoO hybrid film by post annealing

J. B. Yi^*
, J. Ding

^*Corresponding author for this work

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

2 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
Pages (from-to)	175-178
Number of pages	4
Journal	Solid State Phenomena
Volume	111
DOIs	https://doi.org/10.4028/3-908451-18-3.175
State	Published - 2006
Externally published	Yes
Event	Symposium S Science and Technology of Hybrid Materials - ICMAT 2005: 3rd International Conference on Materials for Advanced Technologies; IUMRS-ICAM 2005: International Union of Materials Research Societies-9th International Conference on Advanced M - Singapore, Singapore Duration: 3 Jul 2005 → 8 Jul 2005

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

10.4028/3-908451-18-3.175

Cite this

@article{43fcca0d735b44dca081325192eee35c,

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.",

keywords = "Co/CoO hybrid, Exchange bias and sputtering, Post annealing",

author = "Yi, \{J. B.\} and J. Ding",

year = "2006",

doi = "10.4028/3-908451-18-3.175",

language = "English",

volume = "111",

pages = "175--178",

journal = "Solid State Phenomena",

issn = "1012-0394",

publisher = "Trans Tech Publications Ltd",

note = "Symposium S Science and Technology of Hybrid Materials - ICMAT 2005: 3rd International Conference on Materials for Advanced Technologies; IUMRS-ICAM 2005: International Union of Materials Research Societies-9th International Conference on Advanced M ; Conference date: 03-07-2005 Through 08-07-2005",

}

TY - JOUR

T1 - Co/CoO hybrid film by post annealing

AU - Yi, J. B.

AU - Ding, J.

PY - 2006

Y1 - 2006

N2 - 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.

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.

KW - Co/CoO hybrid

KW - Exchange bias and sputtering

KW - Post annealing

UR - https://www.scopus.com/pages/publications/35148893717

U2 - 10.4028/3-908451-18-3.175

DO - 10.4028/3-908451-18-3.175

M3 - Conference article

AN - SCOPUS:35148893717

SN - 1012-0394

VL - 111

SP - 175

EP - 178

JO - Solid State Phenomena

JF - Solid State Phenomena

T2 - Symposium S Science and Technology of Hybrid Materials - ICMAT 2005: 3rd International Conference on Materials for Advanced Technologies; IUMRS-ICAM 2005: International Union of Materials Research Societies-9th International Conference on Advanced M

Y2 - 3 July 2005 through 8 July 2005

ER -

Co/CoO hybrid film by post annealing

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Fingerprint

Cite this