A facile method to syntheses monodisperse γ-Fe2O3 nanocubes with high magnetic anisotropy density

被引：75
|
作者：
Mahmoud, Waleed E. [1 ,2 ]
Al-Hazmi, Faten [1 ]
Al-Noaiser, Fowzia [3 ]
Al-Ghamdi, A. A. [1 ]
Bronstein, Lyudmila M. [1 ,4 ]
机构：
[1] King Abdulaziz Univ, Fac Sci, Dept Phys, Jeddah, Saudi Arabia
[2] Suez Canal Univ, Fac Sci, Dept Phys, Ismailia, Egypt
[3] King Abdulaziz Univ, Fac Sci, Dept Chem, Jeddah, Saudi Arabia
[4] Indiana Univ, Dept Chem, Bloomington, IN 47405 USA
来源：
SUPERLATTICES AND MICROSTRUCTURES | 2014年 / 68卷
关键词：
Characterization; X-ray diffraction; Growth from solutions; Hydrothermal crystal growth; Nanomaterials; Magnetic materials; IRON-OXIDE; NANOPARTICLES;
D O I：
10.1016/j.spmi.2014.01.009
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The performance of iron oxides, as a clinical tool for hyperthermia application, is strongly depending on their size and structural morphology. The precise control of the iron oxide shape and morphology offers a unique strategy to modify the strength of the dipolar interactions between iron oxide nanoparticles through the engineering of the magnetic surface anisotropy density. This article presents a novel recipe to synthesize gamma-Fe2O3 nanocrystals with cubic morphology. The gamma-Fe2O3 nanocubes were prepared through microwave assisted solvothermal technique. The use of 2,3-oxidosqualene results in iron oxide with cubic shape. The gamma-Fe2O3 nanocubes were analyzed by X-ray diffractometer (XRD), transmission electron microscopy (TEM) and electron diffraction (SAED). The magnetic analysis revealed that the gamma-Fe2O3 nanocubes have a saturation magnetization of 62 emu/g and magnetic surface anisotropy density K-eff =2 x 10(5) erg/cm(3) compared to bulk iron oxide. (C) 2014 Elsevier Ltd. All rights reserved.
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页码：1 / 5
页数：5
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