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Time dependence of magnetization reversal when beginning with pre-existing nucleation sites
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10.1063/1.4809762
/content/aip/journal/jap/113/22/10.1063/1.4809762
http://aip.metastore.ingenta.com/content/aip/journal/jap/113/22/10.1063/1.4809762
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) A magnetic relaxation process starting from saturation, under H = 109 mT; inset: typical hysteresis loop of the sample. (b) The same relaxation data presented using Eq. (5) . Lines are fits to linear areas of the data.

Image of FIG. 2.
FIG. 2.

Time dependence of remagnetization in after different “dwell times” in . is the time of field reversal. Inset: applied magnetic field as function of time in this experimental procedure.

Image of FIG. 3.
FIG. 3.

Example procedure to determine the “true” saturation field. (a) Time dependence of remagnetization under , for different values of between 100 mT and 1.4 T. Inset: experimental procedure illustrated over the hysteresis loop; arrows indicate the direction in which magnetization is driven, starting from . (b) Half-reversal times of remagnetization as function of the pulse field. Sets for 3 values of are presented: 112 mT, 115 mT (see Fig. 3(b) ), and 120 mT; dashed line indicates , above which is constant.

Image of FIG. 4.
FIG. 4.

(a) Successive relaxations under negative fields as function of elapsed time from application of the field; each iteration is followed by a remagnetization under positive field (not shown). Numbers indicate the iteration in the sequence. (b) (full circles, arb. units) fitted from the data in (a), and (open circles) as functions of the repetition number . Inset: magnetic field as function of time illustrating the experimental procedure.

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/content/aip/journal/jap/113/22/10.1063/1.4809762
2013-06-11
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Time dependence of magnetization reversal when beginning with pre-existing nucleation sites
http://aip.metastore.ingenta.com/content/aip/journal/jap/113/22/10.1063/1.4809762
10.1063/1.4809762
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