High Heat Generation Ability in AC Magnetic Field of Y3Fe5O12 Powder Prepared Using Bead Milling

被引：16

作者：

Aono, Hiromichi ^{[1
]}

Ebara, Hiroki ^{[1
]}

Senba, Ryota ^{[1
]}

Naohara, Takashi ^{[1
]}

Maehara, Tsunehiro ^{[1
]}

Hirazawa, Hideyuki ^{[2
]}

Watanabe, Yuji ^{[3
]}

机构：

[1] Ehime Univ, Grad Sch Sci & Engn, Matsuyama, Ehime 7908577, Japan

[2] Niihama Natl Coll Technol, Dept Environm Mat Engn, Niihama 7928580, Japan

[3] Ehime Univ, Dept Surg, Grad Sch Med, Toon 7910295, Japan

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2011年 / 94卷 / 12期

关键词：

REVERSE COPRECIPITATION METHOD; PARTICLES; THERAPY; FLUID;

D O I：

10.1111/j.1551-2916.2011.04879.x

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We found that the nano-sized Y3Fe5O12 powder prepared by bead milling has the highest heat generation ability in an AC magnetic field of reported superparamagnetic materials. The heat generation ability in an AC magnetic field was strongly improved by a decrease in the average crystallite size of the bead milled samples. The highest heat ability in the AC magnetic field was for the fine Y3Fe5O12 powder with ca. 15nm crystallite size (the samples milled for 4 h using 0.1 mm beads). The reasons for the high heat generation properties of the milled samples are ascribed to an increase in the Neel relaxation of the superparamagnetic material. The heat generation ability (W.g(-1)) can be estimated using a 3.58 x 10(-4)f.H-2 frequency (f/kHz) and the magnetic field (H/kA.m(-1)) for the sample milled for 4 h using 0.1mm phi beads.

引用

页码：4116 / 4119

页数：4

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