Synthesis and characterization of Mg1+xFe2-2xTixO4 nanoparticles with an adjustable Curie point

被引：36

作者：

Ferk, Gregor ^{[1
]}

Drofenik, Miha ^{[1
,2
]}

Lisjak, Darja ^{[2
]}

Hamler, Anton ^{[3
]}

Jaglicic, Zvonko ^{[4
,5
]}

Makovec, Darko ^{[2
]}

机构：

[1] Univ Maribor, Fac Chem & Chem Engn, Maribor, Slovenia

[2] Jozef Stefan Inst, Ljubljana, Slovenia

[3] Univ Maribor, Fac Elect Engn & Comp Sci, Maribor, Slovenia

[4] Univ Ljubljana, Inst Math Phys & Mech, Ljubljana 61000, Slovenia

[5] Univ Ljubljana, Fac Civil & Geodet Engn, Ljubljana 61000, Slovenia

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2014年 / 350卷

关键词：

Spinel ferrite; Superparamagnetic; Curie temperature; Magnetic hyperthermia; SIZE;

D O I：

10.1016/j.jmmm.2013.09.037

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Mg1+xFe2-2xTixO4 ferrite nanoparticles for Self-Regulating Magnetic-Fluid Hyperthermia were synthesized by the co-precipitation of Fe3+, Mg2+ and Ti4+ ions using NaOH, The hydroxide precursors were heated to 1000 degrees C in air and the product, (Mg.Ti)-ferrite, was milled in the presence of a surfactant in a high-energy mill, resulting in the magnetic fluid. The magnetic particles were characterized with transmission electron microscopy. X-ray diffractiometry and magnetic measurements. The Mg1+xFe2-2xTixO4 nanoparticles with x=0.37 exhibited a room-temperature magnetization of 8 emu/g at 1 land a Curie temperature (T-c) of 46 degrees C. The heating ability of the nanoparticles in an AC magnetic field was measured using a calorimeter. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：124 / 128

页数：5

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