Magnetic properties of bacterial magnetosomes as potential diagnostic and therapeutic tools

被引：244
|
作者：
Hergt, R
Hiergeist, R
Zeisberger, M
Schüler, D
Heyen, U
Hilger, I
Kaiser, WA
机构：
[1] Inst Phys Hochtechnol EV, D-07702 Jena, Germany
[2] Max Planck Inst Marine Mikrobiol, D-28865 Bremen, Germany
[3] Univ Jena, Inst Diagnost & Intervent Radiol, D-07740 Jena, Germany
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2005年 / 293卷 / 01期
关键词：
nanoparticles; ferrofluids; magnetosome; Brown relaxation; Neel relaxation; magnetic susceptibility; AC losses; magnetic hyperthermia;
D O I：
10.1016/j.jmmm.2005.01.047
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Suspensions of bacterial magnetosomes are investigated with respect to magnetic losses. Mean core diameter of about 30 nm results from TEM, XRD and magnetic analysis. Specific loss power is determined from hysteresis loops, susceptibility spectra and calorimetry with a maximum value of 960 W/g at 410 kHz and field amplitude 10 kA/m. Results may be understood by relaxation effects on hysteresis. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：80 / 86
页数：7
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