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Defective iron-oxide nanoparticles synthesised by high temperature plasma processing: a magnetic characterisation
C Balasubramanian1, B Joseph, P B Orpe
1FCIPT Division, Institute for Plasma Research, GIDC, Sector 25, Gandhinagar 382016, India.
Nanotechnology
|September 27, 2016
Summary
This study investigated iron-oxide nanoparticles synthesized using high-temperature plasma, revealing complex magnetic properties and phase evolution. The findings offer insights into nanoparticle behavior for industrial applications.
Area of Science:
- Materials Science
- Nanotechnology
- Condensed Matter Physics
Background:
- Iron-oxide nanoparticles exhibit unique magnetic properties.
- Understanding their phase composition and magnetic dynamics is crucial for applications.
- Plasma synthesis offers a scalable route for nanoparticle production.
Purpose of the Study:
- To investigate the magnetic properties and phase compositions of iron-oxide nanoparticles.
- To correlate magnetic behavior with synthesis conditions.
- To explore the potential of high-temperature plasma synthesis for industrial applications.
Main Methods:
- Mössbauer spectroscopy to determine iron-oxide fractions.
- High harmonic magnetic AC susceptibility measurements for phase dynamics.
- Correlation with morphological and structural properties.
Main Results:
- Precisely determined the presence of different iron-oxide fractions.
- Revealed metastable magnetic phases evolving with temperature and time.
- Established a link between synthesis conditions and magnetic properties.
Conclusions:
- High-temperature plasma arc route is effective for synthesizing iron-oxide nanoparticles.
- The study elucidates the magnetic properties and dynamics of these nanoparticles.
- This method is highly useful for large-scale nanoparticle synthesis for industry.
