An EPR Study of Small Magnetic Nanoparticles
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Alberto Cini
Abstract
Magnetic nanoparticles (MNPs) of spinel type iron oxide (of approximately 4 nm) mineralized inside the internal cavity of a mini ferritin-type protein have been investigated by means of electron magnetic resonance (EMR) spectroscopy. EMR measurements have been recorded at different temperatures in perpendicular and parallel configurations. The spectra have been interpreted using an approach based on the giant spin model. We confirm the quantum behavior of the MNPs, moreover, the thermal evolution of the spin system in terms of population of excited spin states is showed.
Dedicated to: Professor Dr. Kev Salikhov in occasion of his 80th birthday for his outstanding contribution in the field of magnetic resonance.
Acknowledgements
Dr. Silvia Sottini is acknowledged for her help during the EMR measurements.
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©2017 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
- Frontmatter
- Preface
- Basic and Combination Cross-Features in X- and Q-band HYSCORE of the 15N Labeled Bacteriochlorophyll a Cation Radical
- An EPR Study of Small Magnetic Nanoparticles
- Magnetic Resonance Study of the Spin-1/2 Quantum Magnet BaAg2Cu[VO4]2
- Triarylmethyl Radicals: An EPR Study of 13C Hyperfine Coupling Constants
- Natural Abundance Nitrogen-15 NMR in Thermotropic Liquid Crystals With Cyano-Group
- Surface Hydroxyl OH Defects of η-Al2O3 and χ-Al2O3 by Solid State NMR, XRD, and DFT Calculations
- THz ESR study of Spinel Compound GeCo2O4
- Self-Association of Glycyrrhizic Acid. NMR Study
- A Site-Specific Study of the Magnetic Field-Dependent Proton Spin Relaxation of an Iridium N-Heterocyclic Carbene Complex
- Multifrequency Multiresonance EPR Investigation of Halogen-bonded Complexes Involving Neutral Nitroxide Radicals
- Electron Paramagnetic Resonance and DFT Analysis of the Effects of Bulky Perfluoroalkyl Substituents on a Vanadyl Perfluoro Phthalocyanine
- Coordination of the Mn4+-Center in Layered Li[Co0.98Mn0.02]O2 Cathode Materials for Lithium-Ion Batteries
- Triarylmethyl Radical: EPR Signal to Noise at Frequencies between 250 MHz and 1.5 GHz and Dependence of Relaxation on Radical and Salt Concentration and on Frequency
Artikel in diesem Heft
- Frontmatter
- Preface
- Basic and Combination Cross-Features in X- and Q-band HYSCORE of the 15N Labeled Bacteriochlorophyll a Cation Radical
- An EPR Study of Small Magnetic Nanoparticles
- Magnetic Resonance Study of the Spin-1/2 Quantum Magnet BaAg2Cu[VO4]2
- Triarylmethyl Radicals: An EPR Study of 13C Hyperfine Coupling Constants
- Natural Abundance Nitrogen-15 NMR in Thermotropic Liquid Crystals With Cyano-Group
- Surface Hydroxyl OH Defects of η-Al2O3 and χ-Al2O3 by Solid State NMR, XRD, and DFT Calculations
- THz ESR study of Spinel Compound GeCo2O4
- Self-Association of Glycyrrhizic Acid. NMR Study
- A Site-Specific Study of the Magnetic Field-Dependent Proton Spin Relaxation of an Iridium N-Heterocyclic Carbene Complex
- Multifrequency Multiresonance EPR Investigation of Halogen-bonded Complexes Involving Neutral Nitroxide Radicals
- Electron Paramagnetic Resonance and DFT Analysis of the Effects of Bulky Perfluoroalkyl Substituents on a Vanadyl Perfluoro Phthalocyanine
- Coordination of the Mn4+-Center in Layered Li[Co0.98Mn0.02]O2 Cathode Materials for Lithium-Ion Batteries
- Triarylmethyl Radical: EPR Signal to Noise at Frequencies between 250 MHz and 1.5 GHz and Dependence of Relaxation on Radical and Salt Concentration and on Frequency
