Role of SDS surfactant concentrations on the structural, morphological, dielectric and magnetic properties of CoFe2O4 nanoparticles

被引：61

作者：

Vadivel, M. ^{[1
]}

Babu, R. Ramesh ^{[1
]}

Arivanandhan, M. ^{[2
]}

Ramamurthi, K. ^{[3
]}

Hayakawa, Y. ^{[2
]}

机构：

[1] Bharathidasan Univ, Crystal Growth & Thin Film Lab, Dept Phys, Tiruchirappalli 620024, Tamil Nadu, India

[2] Shizuoka Univ, Elect Res Inst, Nanomat Lab, Hamamatsu, Shizuoka 4328011, Japan

[3] SRM Univ, Crystal Growth & Thin Film Lab, Dept Phys & Nanotechnol, Fac Engn & Technol, Kattankulathur 603203, Tamil Nadu, India

来源：

RSC ADVANCES | 2015年 / 5卷 / 34期

关键词：

COPRECIPITATION SYNTHESIS; HYDROTHERMAL SYNTHESIS; ELECTRICAL-PROPERTIES; NIFE2O4; SUBSTITUTION; FERRITES; SIZE;

D O I：

10.1039/c5ra01162k

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In this work, we report on the preparation of sodium dodecyl sulfate (SDS) surfactant added co balt ferrite (CoFe2O4) magnetic nanoparticles by a co-precipitation method at various concentrations (0.04, 0.08, 0.12, 0.16 and 0.20 M) of SDS. The formation of a single phase cubic spinel structure is confirmed by XRD analysis. FTIR study confirms the presence of Fe-O symmetrical stretching vibrations in the tetrahedral site. TEM images imply that the SDS surfactant significantly limits the agglomeration of CoFe2O4 nanoparticles. A dielectric study reveals that the SDS added CoFe2O4 has a higher dielectric constant than that of pure CoFe2O4 nanoparticles. Magnetic measurements showed the enhanced saturation magnetization (138.75 emu g(-1)), coercivity (775.69 Oe) and retentivity (60.23 emu g(-1)) for 0.08 M SDS added CoFe2O4 nanoparticles. Further, the results obtained in the present study suggest that the surfactant can significantly modify the size and morphology of the prepared CoFe2O4 nanoparticles.

引用

页码：27060 / 27068

页数：9

共 28 条

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