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Composite powder material of the Y3Fe5O12–nSiC system was synthesized by a reverse coprecipitation method to study its heat generation property in an AC magnetic field. For Y3Fe5O12 (n = 0), the maximum heat generation ability of 0.45 W·g-1 in an AC magnetic field (370 kHz, 1.77 kA·m-1) was obtained for the sample calcined at 1100 ℃. The SiC addition helped to suppress the particle growth for Y3Fe5O12 at the calcination temperature. The heat generation ability was improved by the addition of the SiC powder, and the maximum value of 0.93 W·g-1 was obtained for the n = 0.3 sample calcined at 1250 ℃. The heat generation ability and the hysteresis loss value were proportional to the cube of the magnetic field (H3). The heat generation ability (W·g-1) of the Y3Fe5O12–0.3SiC sample calcined at 1250 ℃ could be expressed by the equation 4.5×10-4 · f · H3 using the frequency f (kHz) and the magnetic field H (kA·m-1).


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Heat generation properties in AC magnetic field for composite powder material of the Y3Fe5O12nSiC system prepared by reverse coprecipitation method

Show Author's information Hiromichi AONOa( )Yuhi YAMANOaTakashi NAOHARAaYoshiteru ITAGAKIaTsunehiro MAEHARAaHideyuki HIRAZAWAb
Graduate School of Science and Engineering, Ehime University, Matsuyama 790-8577, Japan
National Institute of Technology, Niihama College, Niihama 792-8580, Japan

Abstract

Composite powder material of the Y3Fe5O12–nSiC system was synthesized by a reverse coprecipitation method to study its heat generation property in an AC magnetic field. For Y3Fe5O12 (n = 0), the maximum heat generation ability of 0.45 W·g-1 in an AC magnetic field (370 kHz, 1.77 kA·m-1) was obtained for the sample calcined at 1100 ℃. The SiC addition helped to suppress the particle growth for Y3Fe5O12 at the calcination temperature. The heat generation ability was improved by the addition of the SiC powder, and the maximum value of 0.93 W·g-1 was obtained for the n = 0.3 sample calcined at 1250 ℃. The heat generation ability and the hysteresis loss value were proportional to the cube of the magnetic field (H3). The heat generation ability (W·g-1) of the Y3Fe5O12–0.3SiC sample calcined at 1250 ℃ could be expressed by the equation 4.5×10-4 · f · H3 using the frequency f (kHz) and the magnetic field H (kA·m-1).

Keywords: SiC, magnetic materials, composite material, Y3Fe5O12, heat generation ability, AC magnetic field

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Publication history
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Publication history

Received: 02 April 2016
Revised: 30 May 2016
Accepted: 17 June 2016
Published: 21 August 2016
Issue date: September 2016

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© The author(s) 2016

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