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On the energy conversion efficiency in magnetic hyperthermia applications: A new perspective to analyze the departure from the linear regime
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10.1063/1.4705392
/content/aip/journal/jap/111/8/10.1063/1.4705392
http://aip.metastore.ingenta.com/content/aip/journal/jap/111/8/10.1063/1.4705392
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Efficiency vs. for different values of the reduced applied field amplitude (), ranging from to in steps of . The frequency is fixed at (or for ). The linear response efficiency [Eq. (4)] is shown in dashed. Also shown are the two characteristic values of ; namely, the linear response maxima and the zero-slope threshold , which separate the regions of increasing and decreasing slope as departs from the linear regime.

Image of FIG. 2.
FIG. 2.

Area and efficiency vs. the reduced applied field amplitude () fordifferent values of , with fixed . (a) Hysteresis loop area (); (b) efficiency (); (c) difference between and the linear response efficiency [Eq. (4)]; and (d) magnification of image (c) for small fields. Points were computed to Eqs. (7) and (8).

Image of FIG. 3.
FIG. 3.

(a) Area and (b) efficiency vs. with fixed . The color scale is in arbitrary units, with blue and red denoting small and largequantities, respectively. The resolution is and .

Image of FIG. 4.
FIG. 4.

(a) Next term, , in the power series expansion of [Eq. (7)], fitted from the initial values of up to . (b) Plot of vs. showing that all curves approximately overlap. The approximate expression given by Eq. (8) is presented in dashed.

Image of FIG. 5.
FIG. 5.

Poli-disperse efficiency vs. for three values of the dispersion parameter . Mono-disperse curves are shown in dashed. (a) , (b) , (c) , and (d) .

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/content/aip/journal/jap/111/8/10.1063/1.4705392
2012-04-26
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: On the energy conversion efficiency in magnetic hyperthermia applications: A new perspective to analyze the departure from the linear regime
http://aip.metastore.ingenta.com/content/aip/journal/jap/111/8/10.1063/1.4705392
10.1063/1.4705392
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