Abstract
The dynamic magnetization switching behavior of a nanostructured magnetic thin film under in-plane magnetic fields is well described by a switching phase diagram composed of two critical curves, one constructed at static and the other at dynamic conditions. The coherent magnetization switching occurs at high magnetic fields above the static critical curve while the incoherent magnetization switching occurs in the region enclosed by the static and the dynamic critical curves. In the incoherent switching region, an abnormal behavior of alternating non-switching/switching that cannot be explained by using the conventional switching phase diagram occurs under a strong transverse bias field. Analytically obtained energy profiles are successfully used to explain this abnormal switching behavior, and the key factor is identified to be the energy difference between the initial state and the saddle point. More extensive and systematic results for the switching phase diagram indicate that the location of the saddle point with respect to the initial state is another important factor affecting the abnormal alternating non-switching/switching behavior.
| Original language | English |
|---|---|
| Pages (from-to) | 1476-1480 |
| Number of pages | 5 |
| Journal | Journal of the Korean Physical Society |
| Volume | 61 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - 2012 Nov 1 |
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Keywords
- Magnetization dynamics
- Micromagnetic simulation
- Nanostructured magnetic thin film
- Switching phase diagram
ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
Effects of the transverse bias field on the dynamic magnetization switching behavior. / Lee, Jong Min; Lim, Sang Ho.
In: Journal of the Korean Physical Society, Vol. 61, No. 9, 01.11.2012, p. 1476-1480.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effects of the transverse bias field on the dynamic magnetization switching behavior
AU - Lee, Jong Min
AU - Lim, Sang Ho
PY - 2012/11/1
Y1 - 2012/11/1
N2 - The dynamic magnetization switching behavior of a nanostructured magnetic thin film under in-plane magnetic fields is well described by a switching phase diagram composed of two critical curves, one constructed at static and the other at dynamic conditions. The coherent magnetization switching occurs at high magnetic fields above the static critical curve while the incoherent magnetization switching occurs in the region enclosed by the static and the dynamic critical curves. In the incoherent switching region, an abnormal behavior of alternating non-switching/switching that cannot be explained by using the conventional switching phase diagram occurs under a strong transverse bias field. Analytically obtained energy profiles are successfully used to explain this abnormal switching behavior, and the key factor is identified to be the energy difference between the initial state and the saddle point. More extensive and systematic results for the switching phase diagram indicate that the location of the saddle point with respect to the initial state is another important factor affecting the abnormal alternating non-switching/switching behavior.
AB - The dynamic magnetization switching behavior of a nanostructured magnetic thin film under in-plane magnetic fields is well described by a switching phase diagram composed of two critical curves, one constructed at static and the other at dynamic conditions. The coherent magnetization switching occurs at high magnetic fields above the static critical curve while the incoherent magnetization switching occurs in the region enclosed by the static and the dynamic critical curves. In the incoherent switching region, an abnormal behavior of alternating non-switching/switching that cannot be explained by using the conventional switching phase diagram occurs under a strong transverse bias field. Analytically obtained energy profiles are successfully used to explain this abnormal switching behavior, and the key factor is identified to be the energy difference between the initial state and the saddle point. More extensive and systematic results for the switching phase diagram indicate that the location of the saddle point with respect to the initial state is another important factor affecting the abnormal alternating non-switching/switching behavior.
KW - Magnetization dynamics
KW - Micromagnetic simulation
KW - Nanostructured magnetic thin film
KW - Switching phase diagram
UR - http://www.scopus.com/inward/record.url?scp=84869446055&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84869446055&partnerID=8YFLogxK
U2 - 10.3938/jkps.61.1476
DO - 10.3938/jkps.61.1476
M3 - Article
VL - 61
SP - 1476
EP - 1480
JO - Journal of the Korean Physical Society
JF - Journal of the Korean Physical Society
SN - 0374-4884
IS - 9
ER -