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Synthesis of Cationized Magnetoferritin for Ultra-fast Magnetization of Cells
Published on: December 13, 2016
Electron transport in nanogranular ferromagnets.
I S Beloborodov1, A Glatz, V M Vinokur
1Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA.
Physical Review Letters
|October 13, 2007
Summary
This study investigates electronic transport in ferromagnetic materials near their Curie temperature, revealing conductivity changes and magnetoresistance jumps. Findings apply to nanoparticle arrays and manganites, aiding future material development.
Area of Science:
- Condensed matter physics
- Materials science
- Nanotechnology
Background:
- Ferromagnetic materials and nanodomain structures exhibit unique electronic properties near the Curie temperature.
- Understanding charge transport is crucial for developing advanced magnetic materials.
Purpose of the Study:
- To investigate the electronic transport properties of ferromagnetic nanoparticle arrays and nanodomain materials.
- To calculate conductivity in Ohmic and non-Ohmic regimes and estimate magnetoresistance.
- To analyze materials near the Curie temperature with weak inter-grain coupling.
Main Methods:
- Theoretical calculation of conductivity.
- Analysis in the Ohmic and non-Ohmic transport regimes.
- Estimation of magnetoresistance jump at the transition temperature.
Main Results:
- Conductivity was calculated for ferromagnetic nanoparticle arrays and nanodomain materials.
- The magnetoresistance jump at the Curie temperature was estimated.
- The study considered the limit of weak coupling between grains.
Conclusions:
- The findings are applicable to artificially self-assembled nanoparticle arrays and certain manganites.
- The results provide insights into electronic transport in emerging ferromagnetic materials.
- Localization effects within clusters were considered negligible for these materials.
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