Parekh, Vishal and Chunsheng, E and Smith, Darren and Ruiz, Ariel and Wolfe, John C and Ruchhoeft, Paul and Svedberg, Erik and Khizroev, Sakhrat and Litvinov, Dmitri (2006) Fabrication of a high anisotropy nanoscale patterned magnetic recording medium for data storage applications. Nanotechnology, 17 (9). pp. 2079-2082. ISSN 09574484
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Official URL: http://dx.doi.org/10.1088/0957-4484/17/9/001
Abstract
An approach to fabrication of a patterned magnetic recording medium for next generation data storage systems is presented. (Co/Pd)n magnetic multilayers are evaluated as candidates for patterned medium materials for their high and easily controllable magnetic anisotropy. The multilayer films deposited on a Ta seed layer enable high intergranular exchange coupling—an essential feature of a patterned magnetic recording medium. The quality of (Co/Pd)n superlattices was optimized via deposition conditions and monitored using low-angle x-ray diffraction. An estimated in-plane (hard-axis) magnetization saturation field in excess of 40 000 Oe was observed. Vertical (easy-axis) hysteresis loops for as-deposited continuous magnetic multilayers exhibited a low coercivity of 930 Oe, indicating highly uniform (magnetically) films with weak domain wall pinning. Ion-beam proximity lithography was used to pattern magnetic multilayers into 43 nm islands on a 135 nm pitch. Following patterning, easy-axis coercivity increased nearly 15-fold to 12.7 kOe.
| Item Type: | Article |
|---|---|
| Subjects: | Material Science > Nanofabrication processes and tools Physical Science > Nanomagnetics Engineering > Nanotechnology applications in ICT |
| ID Code: | 194 |
| Deposited By: | Lesley Tobin |
| Deposited On: | 14 Nov 2008 17:18 |
| Last Modified: | 30 Jan 2009 15:22 |
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