Effect of core size distribution on magnetic nanoparticle harmonics for thermometry

Zhongzhou Du; Yi Sun; Oji Higashi; Yuki Noguchi; Keiji Enpuku; Sebastian Draack; Klaas Julian Janssen; Tamara Kahmann; Jing Zhong; Thilo Viereck; Frank Ludwig; Takashi Yoshida

doi:10.7567/1347-4065/ab5c9b

Effect of core size distribution on magnetic nanoparticle harmonics for thermometry

Zhongzhou Du, Yi Sun, Oji Higashi, Yuki Noguchi, Keiji Enpuku, Sebastian Draack, Klaas Julian Janssen, Tamara Kahmann, Jing Zhong, Thilo Viereck, Frank Ludwig, Takashi Yoshida

Applied Energy Engineering

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

We investigated the effect of core size distribution on the performance of a magnetic nanoparticle thermometer (MNPT) in circumstances when Neél relaxation dominates the dynamic behavior of particles. Numerical simulations revealed the effects of excitation field strength and core size distribution on the temperature dependence of the amplitude and phase of harmonics. In MNPT, the field dependences of sensitivity deviated significantly from those calculated when the core size distribution was neglected. These simulation results were compared with those from experiments for which reasonable agreement was obtained. These findings must be carefully considered when designing an optimal MNPT system.

Original language	English
Article number	010904
Journal	Japanese journal of applied physics
Volume	59
Issue number	1
DOIs	https://doi.org/10.7567/1347-4065/ab5c9b
Publication status	Published - Jan 1 2020

All Science Journal Classification (ASJC) codes

Engineering(all)
Physics and Astronomy(all)

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title = "Effect of core size distribution on magnetic nanoparticle harmonics for thermometry",

abstract = "We investigated the effect of core size distribution on the performance of a magnetic nanoparticle thermometer (MNPT) in circumstances when Ne{\'e}l relaxation dominates the dynamic behavior of particles. Numerical simulations revealed the effects of excitation field strength and core size distribution on the temperature dependence of the amplitude and phase of harmonics. In MNPT, the field dependences of sensitivity deviated significantly from those calculated when the core size distribution was neglected. These simulation results were compared with those from experiments for which reasonable agreement was obtained. These findings must be carefully considered when designing an optimal MNPT system.",

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T1 - Effect of core size distribution on magnetic nanoparticle harmonics for thermometry

AU - Du, Zhongzhou

AU - Sun, Yi

AU - Higashi, Oji

AU - Noguchi, Yuki

AU - Enpuku, Keiji

AU - Draack, Sebastian

AU - Janssen, Klaas Julian

AU - Kahmann, Tamara

AU - Zhong, Jing

AU - Viereck, Thilo

AU - Ludwig, Frank

AU - Yoshida, Takashi

PY - 2020/1/1

Y1 - 2020/1/1

N2 - We investigated the effect of core size distribution on the performance of a magnetic nanoparticle thermometer (MNPT) in circumstances when Neél relaxation dominates the dynamic behavior of particles. Numerical simulations revealed the effects of excitation field strength and core size distribution on the temperature dependence of the amplitude and phase of harmonics. In MNPT, the field dependences of sensitivity deviated significantly from those calculated when the core size distribution was neglected. These simulation results were compared with those from experiments for which reasonable agreement was obtained. These findings must be carefully considered when designing an optimal MNPT system.

AB - We investigated the effect of core size distribution on the performance of a magnetic nanoparticle thermometer (MNPT) in circumstances when Neél relaxation dominates the dynamic behavior of particles. Numerical simulations revealed the effects of excitation field strength and core size distribution on the temperature dependence of the amplitude and phase of harmonics. In MNPT, the field dependences of sensitivity deviated significantly from those calculated when the core size distribution was neglected. These simulation results were compared with those from experiments for which reasonable agreement was obtained. These findings must be carefully considered when designing an optimal MNPT system.

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Effect of core size distribution on magnetic nanoparticle harmonics for thermometry

Abstract

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