Schneider, M. and Hoffmann, Horst (1999) Magnetization loops of submicron ferromagnetic permalloy dot arrays. JOURNAL OF APPLIED PHYSICS, 86 (8). pp. 4539-4543. ISSN 0021-8979,
Full text not available from this repository.Abstract
Polycrystalline Permalloy films were deposited onto silicon substrates by rf sputtering. Arrays of cylindrical dots with diameter d between 150 and 550 nm were patterned by optical holographic lithography. The dots were arranged on a square lattice with period p, ranging from 310 to 1030 nm. The height h of dots, given by the thickness of the permalloy films, ranged between 10 and 80 nm. The shape of the magnetization loops of the dot arrays depends strongly on the aspect ratio r = d/h. The in-plane saturation field is given by the intrinsic demagnetization field of single, isolated dots. The dipolar interaction between the dots is negligible. For cylinders with elliptical base plane, the magnetization loop depends on the field direction. The measured magnetization loops of the arrays are the superposition of the magnetization loops of the single dots without dipolar interaction. A model of magnetization reversal in applied fields is given. (C) 1999 American Institute of Physics. [S0021-8979(99)01920-9].
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | HYSTERESIS; FABRICATION; PARTICLES; FILMS; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 13 Dec 2022 14:16 |
| Last Modified: | 13 Dec 2022 14:16 |
| URI: | https://pred.uni-regensburg.de/id/eprint/48921 |
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