A simple route to synthesize nanocrystalline nickel ferrite (NiFe2O4) in the presence of octanoic acid as a surfactant

被引：173

作者：

Salavati-Niasari, Masoud ^{[1
,2
]}

Davar, Fatemeh ^{[1
,2
]}

Mahmoudi, Tahmineh ^{[1
]}

机构：

[1] Univ Kashan, Inst Nano Sci & Nano Technol, Kashan, Iran

[2] Univ Kashan, Fac Sci, Dept Chem, Kashan, Iran

来源：

POLYHEDRON | 2009年 / 28卷 / 08期

关键词：

Magnetic nanoparticles; Nickel ferrite; Magnetite; Chemical method; Octanoic acid; NANOPARTICLES; POWDER; SPINEL;

D O I：

10.1016/j.poly.2009.03.020

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Nanocrystalline nickel ferrite (NiFe2O4) powder was prepared by a co-precipitation method from Ni and Fe chlorides. The as-prepared samples were characterized by powder X-ray diffractometry (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR) and vibrating sample magnetometry (VSM). SEM and TEM indicated that the particles were spherical with particle sizes in the range 25 +/- 5 nm. The magnetic properties of the sample were measured by using a vibrating sample magnetometer, which showed that the sample exhibited typical ferromagnetic behavior at room temperature, while a finite coercivity of 245.5 Oe was present at 300 K. The saturation magnetization of the sample (23.13 emu/g) was significantly lower than that for the reported multidomain bulk particles (55 emu/g), reflecting the ultrafine nature of the sample. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：1455 / 1458

页数：4

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