DOI: 10.1063/1.1355671. Cobaltous oxide infiltrated yttrium iron garnet thin films as high-coercivity media for data storage

Cobaltous oxide infiltrated yttrium iron garnet thin films as high-coercivity media for data storage

10.1063/1.1355671

Crossref journal-article

AIP Publishing

Applied Physics Letters (317)

Abstract

Significant enhancement in the saturation magnetization Ms and coercivity Hc of yttrium iron garnet (YIG) films has been obtained by a simple method of surface infiltration of CoO. Deposition of a CoO overlayer under specific conditions by a low-pressure chemical-vapor deposition process over the crystallized YIG film has been observed to show high out-of-plane Hc and Ms values of 282.7 and 85.7 kA/m, respectively. The effect of the CoO deposition rate, temperature dependence of coercivity Hc, and annealing studies have been described that indicate CoO infiltration during the growth, resulting in a Co-rich YIG layer, and generation of interfacial stress are responsible for this unusual effect. Delineation of the interface by ion-beam etching in conjunction with magnetic studies has led to the understanding of the nature of the Co-rich YIG interfacial layer. Enhanced Hc and Ms values without the usual method of Ce4+ compensation of Co-doped YIG films described in this letter are of considerable use for application in high-density magneto-optic recording media.

Bibliography

Rastogi, A. C., Moorthy, V. N., & Dhara, S. (2001). Cobaltous oxide infiltrated yttrium iron garnet thin films as high-coercivity media for data storage. Applied Physics Letters, 78(12), 1709â1711.

Authors 3

A. C. Rastogi (first)
V. N. Moorthy (additional)
Sandip Dhara (additional)

References 14 Referenced 4

10.1016/0304-8853(90)90099-C / J. Magn. Magn. Mater. (1990)
{'key': '2024020319454483700_r2'}
10.1063/1.124053 / Appl. Phys. Lett. (1999)
{'key': '2024020319454483700_r4'}
{'key': '2024020319454483700_r5'}
10.1109/20.801081 / IEEE Trans. Magn. (1999)
{'key': '2024020319454483700_r7'}
10.1063/1.360877 / J. Appl. Phys. (1996)
{'key': '2024020319454483700_r9', 'first-page': '1865', 'volume': '14', 'year': '1999', 'journal-title': 'J. Mater. Res.'} / J. Mater. Res. (1999)
{'key': '2024020319454483700_r10', 'first-page': '309', 'volume': '11', 'year': '1987', 'journal-title': 'J. Magn. Soc. Jpn.'} / J. Magn. Soc. Jpn. (1987)
10.1063/1.338597 / J. Appl. Phys. (1987)
10.1134/1.1131115 / Phys. Solid State (1999)
10.1109/20.801115 / IEEE Trans. Magn. (1999)
{'key': '2024020319454483700_r14'}

Dates

Type	When
Created	23 years, 1 month ago (July 26, 2002, 10:14 a.m.)
Deposited	1 year, 6 months ago (Feb. 3, 2024, 2:45 p.m.)
Indexed	1 year, 6 months ago (Feb. 3, 2024, 3:10 p.m.)
Issued	24 years, 5 months ago (March 19, 2001)
Published	24 years, 5 months ago (March 19, 2001)
Published Print	24 years, 5 months ago (March 19, 2001)

Funders 0

None

BibTeX

@article{Rastogi_2001, title={Cobaltous oxide infiltrated yttrium iron garnet thin films as high-coercivity media for data storage}, volume={78}, ISSN={1077-3118}, url={http://dx.doi.org/10.1063/1.1355671}, DOI={10.1063/1.1355671}, number={12}, journal={Applied Physics Letters}, publisher={AIP Publishing}, author={Rastogi, A. C. and Moorthy, V. N. and Dhara, Sandip}, year={2001}, month=mar, pages={1709–1711} }

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