Magnetic Properties of ZnO Nanoparticles

We experimentally show that it is possible to induce room-temperature ferromagnetic-like behavior in ZnO nanoparticles without doping with magnetic impurities but simply inducing an alteration of their electronic configuration. Capping ZnO nanoparticles (∼10 nm size) with different organic molecules...

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Bibliographic Details
Published in:Nano letters 2007-06, Vol.7 (6), p.1489-1494
Main Authors: Garcia, M. A., Merino, J. M., Fernández Pinel, E., Quesada, A., de la Venta, J., Ruíz González, M. L., Castro, G. R., Crespo, P., Llopis, J., González-Calbet, J. M., Hernando, A.
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Cross-disciplinary physics: materials science
rheology
Crystallization - methods
Exact sciences and technology
Macromolecular Substances - chemistry
Magnetic properties and materials
Magnetics
Materials science
Materials Testing
Molecular Conformation
Nanoscale materials and structures: fabrication and characterization
Nanostructures - chemistry
Nanostructures - ultrastructure
Nanotechnology - methods
Other topics in nanoscale materials and structures
Particle Size
Physics
Small particles and nanoscale materials
Studies of specific magnetic materials
Surface Properties
Zinc Oxide - chemistry
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Summary:We experimentally show that it is possible to induce room-temperature ferromagnetic-like behavior in ZnO nanoparticles without doping with magnetic impurities but simply inducing an alteration of their electronic configuration. Capping ZnO nanoparticles (∼10 nm size) with different organic molecules produces an alteration of their electronic configuration that depends on the particular molecule, as evidenced by photoluminescence and X-ray absorption spectroscopies and altering their magnetic properties that varies from diamagnetic to ferromagnetic-like behavior.
ISSN:1530-6984
1530-6992
DOI:10.1021/nl070198m