Abstract
Reversible and irreversible magnetization processes of the single-domain elliptical permalloy dot are studied by simulation. The magnetization curve of the reversible process obtained by applying the field along the hard axis of the elliptical dot is almost linear, as is the case in the single-domain ellipsoidal particle. Due to the occurrence of the non uniform reversal, the switching field is reduced significantly compared to that predicted by the Stoner-Wohlfarth model. The nucleation fields of elliptical dots are calculated as a function of ellipse's aspect ratio, and the function reveals a step-like behavior.
| Original language | English |
|---|---|
| Pages (from-to) | 135-138 |
| Number of pages | 4 |
| Journal | Journal of Magnetism and Magnetic Materials |
| Volume | 282 |
| Issue number | 1-3 |
| DOIs | |
| Publication status | Published - 2004 Nov 1 |
| Event | International Symposium on Advanced Magnetic Technologies - Taipei, Taiwan Duration: 2003 Nov 13 → 2003 Nov 16 |
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All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
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Nonuniform magnetization reversals in elliptical permalloy dots. / Lai, Mei Feng; Wei, Zung Hang; Chang, Ching Ray; Usov, N. A.; Wu, Jong-Ching; Lai, Jun Yang.
In: Journal of Magnetism and Magnetic Materials, Vol. 282, No. 1-3, 01.11.2004, p. 135-138.Research output: Contribution to journal › Conference article
TY - JOUR
T1 - Nonuniform magnetization reversals in elliptical permalloy dots
AU - Lai, Mei Feng
AU - Wei, Zung Hang
AU - Chang, Ching Ray
AU - Usov, N. A.
AU - Wu, Jong-Ching
AU - Lai, Jun Yang
PY - 2004/11/1
Y1 - 2004/11/1
N2 - Reversible and irreversible magnetization processes of the single-domain elliptical permalloy dot are studied by simulation. The magnetization curve of the reversible process obtained by applying the field along the hard axis of the elliptical dot is almost linear, as is the case in the single-domain ellipsoidal particle. Due to the occurrence of the non uniform reversal, the switching field is reduced significantly compared to that predicted by the Stoner-Wohlfarth model. The nucleation fields of elliptical dots are calculated as a function of ellipse's aspect ratio, and the function reveals a step-like behavior.
AB - Reversible and irreversible magnetization processes of the single-domain elliptical permalloy dot are studied by simulation. The magnetization curve of the reversible process obtained by applying the field along the hard axis of the elliptical dot is almost linear, as is the case in the single-domain ellipsoidal particle. Due to the occurrence of the non uniform reversal, the switching field is reduced significantly compared to that predicted by the Stoner-Wohlfarth model. The nucleation fields of elliptical dots are calculated as a function of ellipse's aspect ratio, and the function reveals a step-like behavior.
UR - http://www.scopus.com/inward/record.url?scp=5744254461&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=5744254461&partnerID=8YFLogxK
U2 - 10.1016/j.jmmm.2004.04.032
DO - 10.1016/j.jmmm.2004.04.032
M3 - Conference article
AN - SCOPUS:5744254461
VL - 282
SP - 135
EP - 138
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
SN - 0304-8853
IS - 1-3
ER -