Synthesis and characterization of magnetic opal/Fe3O4 colloidal crystal

被引:33
作者
Carmona-Carmona, A. J. [1 ]
Palomino-Ovando, M. A. [1 ]
Hernandez-Cristobal, Orlando [2 ]
Sanchez-Mora, E. [3 ]
Toledo-Solano, M. [4 ]
机构
[1] Benemerita Univ Autonoma Puebla, Fac Ciencias Fis & Matemat, Postgrado & Fis Aplicada, Av San Claudio Av 18 Sun Col San Manuel Ciudad, Puebla 72570, Mexico
[2] Univ Nacl Autonoma Mexico, Escuela Super Nacl, Antigua Carretera Patzcuaro 8701,Colonia San Jose, Morelia, Michoacan 58089, Mexico
[3] Benemerita Univ Autonoma Puebla, Inst Fis Luis Rivera Terrazas, Av San Claudio Av 18 Sun Col San Manuel Ciudad, Puebla 72570, Mexico
[4] CONACYT Benemerita Univ Autonoma Puebla, Fac Ciencias Fis & Matemat, Av San Claudio Av 18 Sun Col San Manuel Ciudad, Puebla, Mexico
关键词
Characterization; X-ray diffraction; Nanostructures; Magnetic-optic materials; IRON-OXIDE NANOPARTICLES; MAGNETOOPTICAL PROPERTIES; RAMAN-SPECTROSCOPY; PHOTONIC CRYSTALS; FE3O4; SIO2; FABRICATION; NANOCOMPOSITE; PARTICLES; SIZE;
D O I
10.1016/j.jcrysgro.2016.12.105
中图分类号
O7 [晶体学];
学科分类号
070301 [无机化学];
摘要
We report an experimental study of colloidal crystals based on SiO2 artificial opals, infiltrated with 1.34(M1), 2.03(M2) and 24.4(M3) wt% Fe3O4 nanoparticles, using the co-assembly method. Scanning electron microscopy (SEM), X-ray diffraction (XRD), Raman spectroscopy and Vibration sample magnetometer (VSM) were used to study the structural, magnetic and optical properties of the samples. At 300 K all the samples exhibit superparamagnetic behavior due to the magnetic coupling of Fe3O4 nanoparticles infiltrated into opal. However, for higher concentration of nanoparticles this strong coupling distorts the opal network. The UV vis diffuse reflectance spectroscopy and Kubelka-Munk theory were applied to determine that the energy band gap of the opal-magnetite composites can be adjusted by varying the concentration of Fe3O4 nanoparticles. This values are between the energy band gap of SiO2 and Fe3O4.
引用
收藏
页码:6 / 11
页数:6
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