Exceeding natural resonance frequency limit of monodisperse Fe 3 O 4 nanoparticles via superparamagnetic relaxation

Ning Ning Song; Hai Tao Yang; Hao Liang Liu; Xiao Ren; Hao Feng Ding; Xiang Qun Zhang; Zhao Hua Cheng

doi:10.1038/srep03161

Exceeding natural resonance frequency limit of monodisperse Fe 3 O 4 nanoparticles via superparamagnetic relaxation

Ning Ning Song
, Hai Tao Yang
, Hao Liang Liu
, Xiao Ren
, Hao Feng Ding
, Xiang Qun Zhang
, Zhao Hua Cheng^*

^*Corresponding author for this work

CAS - Institute of Physics

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

128 Scopus citations

Abstract

Magnetic nanoparticles have attracted much research interest in the past decades due to their potential applications in microwave devices. Here, we adopted a novel technique to tune cut-off frequency exceeding the natural resonance frequency limit of monodisperse Fe 3 O 4 nanoparticles via superparamagnetic relaxation. We observed that the cut-off frequency can be enhanced from 5.3â€...GHz for Fe 3 O 4 to 6.9â€...GHz forFe 3 O 4 @SiO 2 core-shell structure superparamagnetic nanoparticles, which are much higher than the natural resonance frequency of 1.3â€...GHz for Fe 3 O 4 bulk material. This finding not only provides us a new approach to enhance the resonance frequency beyond the Snoek's limit, but also extend the application for superparamagnetic nanoparticles to microwave devices.

Original language	English
Article number	3161
Journal	Scientific Reports
Volume	3
DOIs	https://doi.org/10.1038/srep03161
State	Published - 7 Nov 2013
Externally published	Yes

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title = "Exceeding natural resonance frequency limit of monodisperse Fe 3 O 4 nanoparticles via superparamagnetic relaxation",

abstract = "Magnetic nanoparticles have attracted much research interest in the past decades due to their potential applications in microwave devices. Here, we adopted a novel technique to tune cut-off frequency exceeding the natural resonance frequency limit of monodisperse Fe 3 O 4 nanoparticles via superparamagnetic relaxation. We observed that the cut-off frequency can be enhanced from 5.3{\^a}€...GHz for Fe 3 O 4 to 6.9{\^a}€...GHz forFe 3 O 4 @SiO 2 core-shell structure superparamagnetic nanoparticles, which are much higher than the natural resonance frequency of 1.3{\^a}€...GHz for Fe 3 O 4 bulk material. This finding not only provides us a new approach to enhance the resonance frequency beyond the Snoek's limit, but also extend the application for superparamagnetic nanoparticles to microwave devices.",

author = "Song, \{Ning Ning\} and Yang, \{Hai Tao\} and Liu, \{Hao Liang\} and Xiao Ren and Ding, \{Hao Feng\} and Zhang, \{Xiang Qun\} and Cheng, \{Zhao Hua\}",

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doi = "10.1038/srep03161",

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T1 - Exceeding natural resonance frequency limit of monodisperse Fe 3 O 4 nanoparticles via superparamagnetic relaxation

AU - Song, Ning Ning

AU - Yang, Hai Tao

AU - Liu, Hao Liang

AU - Ren, Xiao

AU - Ding, Hao Feng

AU - Zhang, Xiang Qun

AU - Cheng, Zhao Hua

PY - 2013/11/7

Y1 - 2013/11/7

N2 - Magnetic nanoparticles have attracted much research interest in the past decades due to their potential applications in microwave devices. Here, we adopted a novel technique to tune cut-off frequency exceeding the natural resonance frequency limit of monodisperse Fe 3 O 4 nanoparticles via superparamagnetic relaxation. We observed that the cut-off frequency can be enhanced from 5.3â€...GHz for Fe 3 O 4 to 6.9â€...GHz forFe 3 O 4 @SiO 2 core-shell structure superparamagnetic nanoparticles, which are much higher than the natural resonance frequency of 1.3â€...GHz for Fe 3 O 4 bulk material. This finding not only provides us a new approach to enhance the resonance frequency beyond the Snoek's limit, but also extend the application for superparamagnetic nanoparticles to microwave devices.

AB - Magnetic nanoparticles have attracted much research interest in the past decades due to their potential applications in microwave devices. Here, we adopted a novel technique to tune cut-off frequency exceeding the natural resonance frequency limit of monodisperse Fe 3 O 4 nanoparticles via superparamagnetic relaxation. We observed that the cut-off frequency can be enhanced from 5.3â€...GHz for Fe 3 O 4 to 6.9â€...GHz forFe 3 O 4 @SiO 2 core-shell structure superparamagnetic nanoparticles, which are much higher than the natural resonance frequency of 1.3â€...GHz for Fe 3 O 4 bulk material. This finding not only provides us a new approach to enhance the resonance frequency beyond the Snoek's limit, but also extend the application for superparamagnetic nanoparticles to microwave devices.

UR - https://www.scopus.com/pages/publications/84889568866

U2 - 10.1038/srep03161

DO - 10.1038/srep03161

M3 - 文章

AN - SCOPUS:84889568866

SN - 2045-2322

VL - 3

JO - Scientific Reports

JF - Scientific Reports

M1 - 3161

ER -

Exceeding natural resonance frequency limit of monodisperse Fe 3 O 4 nanoparticles via superparamagnetic relaxation

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