Magnetic Hyperthermia With Fe3O4 Nanoparticles: The Influence of Particle Size on Energy Absorption

被引：89

作者：

Goya, Gerardo F. ^{[1
]}

Lima, Enio, Jr. ^{[3
]}

Arelaro, Amanda D. ^{[3
]}

Torres, Teobaldo ^{[1
]}

Rechenberg, Hercilio R. ^{[3
]}

Rossi, Liane ^{[4
]}

Marquina, Clara ^{[2
]}

Ricardo Ibarra, M. ^{[1
,2
]}

机构：

[1] Univ Zaragoza, INA, E-50009 Zaragoza, Spain

[2] Univ Zaragoza, CSIC, Inst Ciencia Mat Aragon, E-50009 Zaragoza, Spain

[3] Univ Sao Paulo, Inst Fis, BR-33618 Sao Paulo, Brazil

[4] Univ Sao Paulo, Inst Quim, BR-33618 Sao Paulo, Brazil

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2008年 / 44卷 / 11期

基金：

巴西圣保罗研究基金会;

关键词：

Electromagnetic heating; ferrimagnetic materials; hyperthermia; magnetic domains; magnetic losses;

D O I：

10.1109/TMAG.2008.2003508

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 [电气工程]; 0809 [电子科学与技术];

摘要：

We have studied the magnetic and power absorption properties of a series of magnetic nanoparticles (MNPs) of Fe3O4 with average sizes < d > ranging from 3 to 26 rim. Heating experiments as a function of particle size revealed a strong increase in the specific power absorption (SPA) values for particles with < d > = 25-30 mn. On the other side saturation magnetization M-s values of these MNPs remain essentially constant for particles with < d > above 10 rim, suggesting that the absorption mechanism is not determined by Ms. The largest SPA value obtained was 130 W/g, corresponding to a bimodal particle distribution with average size values of 17 and 26 nm.

引用

页码：4444 / 4447

页数：4

共 9 条

[1]

Uniform and water stable magnetite nanoparticles with diameters around the monodomain-multidomain limit [J].