Abstract
Microwave-assisted magnetization reversal utilizing a transient precession of magnetization was demonstrated in a permalloy hexagon by applying a 25-ns-wide microwave field and a 500-ps-wide pulsed field with a tunable delay to the microwave field. The switching field in a combination of these two fields becomes smaller than that in only the microwave field, and this additional reduction in switching field oscillates relative to the delay time. From the comparison with the results of micromagnetic simulations, we found that the oscillatory behavior is attributed to the beats in transient precession that occurs in the early stage of microwave-field-induced magnetization excitation.
| Original language | English |
|---|---|
| Article number | 063001 |
| Journal | Applied Physics Express |
| Volume | 9 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 2016 Jun 1 |
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ASJC Scopus subject areas
- Engineering(all)
- Physics and Astronomy(all)
Cite this
Microwave-assisted magnetization reversal using transient precession of magnetization in permalloy hexagons. / Okano, Genki; Nozaki, Yukio.
In: Applied Physics Express, Vol. 9, No. 6, 063001, 01.06.2016.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Microwave-assisted magnetization reversal using transient precession of magnetization in permalloy hexagons
AU - Okano, Genki
AU - Nozaki, Yukio
PY - 2016/6/1
Y1 - 2016/6/1
N2 - Microwave-assisted magnetization reversal utilizing a transient precession of magnetization was demonstrated in a permalloy hexagon by applying a 25-ns-wide microwave field and a 500-ps-wide pulsed field with a tunable delay to the microwave field. The switching field in a combination of these two fields becomes smaller than that in only the microwave field, and this additional reduction in switching field oscillates relative to the delay time. From the comparison with the results of micromagnetic simulations, we found that the oscillatory behavior is attributed to the beats in transient precession that occurs in the early stage of microwave-field-induced magnetization excitation.
AB - Microwave-assisted magnetization reversal utilizing a transient precession of magnetization was demonstrated in a permalloy hexagon by applying a 25-ns-wide microwave field and a 500-ps-wide pulsed field with a tunable delay to the microwave field. The switching field in a combination of these two fields becomes smaller than that in only the microwave field, and this additional reduction in switching field oscillates relative to the delay time. From the comparison with the results of micromagnetic simulations, we found that the oscillatory behavior is attributed to the beats in transient precession that occurs in the early stage of microwave-field-induced magnetization excitation.
UR - http://www.scopus.com/inward/record.url?scp=84973494179&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84973494179&partnerID=8YFLogxK
U2 - 10.7567/APEX.9.063001
DO - 10.7567/APEX.9.063001
M3 - Article
VL - 9
JO - Applied Physics Express
JF - Applied Physics Express
SN - 1882-0778
IS - 6
M1 - 063001
ER -