Fe_2O_3/SiO_2 Hybrid Nanocomposites Studied Mainly by Mössbauer Spectroscopy

• Authors: A. Lančok , P. Bezdička , M. Klementová , K. Závěta , C. Savii
• Languages of publication: EN

Abstracts

EN

Magnetic nanocomposites exhibit promising applications in many areas, for example optics, electronics, biology, medicine, etc. The main goal of this study was to synthesize magnetic ε-Fe_2O_3 nanoparticles embedded in amorphous SiO_2. These materials were prepared by the help of ultrasonic activation and subsequent annealing in nitrogen atmosphere or air with concentrations of iron oxide of about 20 and 30 wt.%. The structure and properties of the final product were analysed by the Mössbauer spectrometry as well as by X-ray diffraction, scanning electron microscopy, and high resolution transmission electron microscopy. They strongly depend on the initial conditions of preparation.

Keywords

EN

75.50.Tt; 76.80.+y

Discipline

• 76.80.+y: Mössbauer effect; other γ-ray spectroscopy(see also 33.45.+x Mössbauer spectra—in atomic and molecular physics; for biophysical applications, see 87.64.kx; for chemical analysis applications, see 82.80.Ej)
• 75.50.Tt: Fine-particle systems; nanocrystalline materials

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2008
• Volume: 113
• Issue: 1
• Pages: 577-581

Dates

published

2008-01

received

2007-07-09

Contributors

author

A. Lančok

• Joint Lab. of Low Temp., Inst. of Phys. ASCR, v.v.i., IIC ASCR, v.v.i., MFF UK, Fac. of Nat. Sc, V Holešovičkách 2, 180 00 Prague, Czech Republic
• Institute of Inorg. Chemistry ASCR, v.v.i., 250 68 Řežnear Prague, Czech Republic

author

P. Bezdička

• Institute of Inorg. Chemistry ASCR, v.v.i., 250 68 Řežnear Prague, Czech Republic

author

M. Klementová

• Institute of Inorg. Chemistry ASCR, v.v.i., 250 68 Řežnear Prague, Czech Republic

author

K. Závěta

• Joint Lab. of Low Temp., Inst. of Phys. ASCR, v.v.i., IIC ASCR, v.v.i., MFF UK, Fac. of Nat. Sc., V Holešovičkách 2, 180 00 Prague, Czech Republic
• Institute of Physics, ASCR, v.v.i., Na Slovance 2, 182 21 Prague, Czech Republic
• Institute of Chemistry, Romanian Academy, 24 Mihai Viteazul Blvd., Timisoara 300223, Romania

author

C. Savii

• Institute of Chemistry, Romanian Academy, 24 Mihai Viteazul Blvd., Timisoara 300223, Romania

References

• 1. Ya-Juan Hao, Guo-Qiang Jin, Xiao-Dong Han, Xiang-Yun Guo, Mater. Lett. 60, 1334 (2006)
• 2. Bong Kyun Oh, M.E. Robbins, B.J. Nablo, M.H. Schoenfisch, Biosensors Bioelectron. 21, 749 (2005)
• 3. R.A. Brand, NORMOS PROGRAMS, Duisburg University, 1989
• 4. A. Lančok, K. Závěta, C. Savii, K. Barčová, Czech. J. Phys. 56, E101 (2006)

Identifiers

DOI

10.12693/APhysPolA.113.577