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Effects of Polarization of Radiofrequency Radiation in Polycrystalline ESR
V. E. Fainzilberg
Department of Chemistry, Long Island University, USA
Abstract
Radiofrequency radiation that is commonly used in ESR experiments is linearly-polarized. Utilization of a circular- polarized radiofrequency radiation is essential in exclusive cases, when the sign of gyromagnetic ratio may reveal the nature of the ground state. It permits also to determine signs of g-tensor components in the systems with ground state described as an effective spin level [1]. Multiple experiments and calculations on line shapes of mono- and polycrystalline ESR spectra have been carried out exclusively with linear-polarized radiation (see, for instance, [2]- [4]). Indeed, any linear-polarized radiation is a superposition of two circular components that revolve in opposite directions, and hence, while one of them may be silent, the other one is absorbed. We aim to show that polycrystalline spectrum in linear polarization has different line shape than that obtained in a circular polarization. The latter provides additional options to compare and validate theoretical models. In this paper the theory of polycrystalline ESR spectra that are generated by resonance absorption of a circular polarized radiofrequency radiation are examined.
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Download article (PDF)Redispersable Nanopowders for Wet Chemical Coatings Processes: Application to Transparent Conducting Coatings
N. Al-Dahoudi, M.A. Aegerter
Institut fuer Neue Materialien gem. GmbH - INM
Department of Coating Technology, Saarbruecken, Germany
Luminescent Materials, Recognition Phases of The Chemical Sensors and Heterogeneous Catalysts Prepared By Sol-Gel Method
Andrzej M. Kłonkowski
Faculty of Chemistry, University of Gdańsk, Poland
Spectroscopic Studies on the Inclusion Complexes of Tetrakis(2-hidroxy-5-nitrophenyl)porphyrin with α-Cyclodextrin in Solution and in Sol-Gel Matrix
A. O. Ribeiro, C. R. Neri, Y. Iamamoto and O. A. Serra
Rare Earth/Bioinorganic Laboratory - Chemistry Department - FFCLRP
University of São Paulo, Brasil
Comparison of Sol-Gel and Solid State Prepared Eu2+ Doped Calcium Aluminates
Tuomas Aitasalo1,2, Jorma Hölsä1,3, Högne Jungner 4, Mika Lastusaari1,2, Janne Niittykoski1,2
1University of Turku, Department of Chemistry, Finland
2Graduate School of Materials Research, Turku, Finland
3ENSCP, CNRS, Laboratoire de Chimie Appliquée de l'Etat Solide, Paris, France
4University of Helsinki, Dating Laboratory, Finland
Highly Porous Aerogels with Very Low Permability
J. Phalippou, T. Woignier, R. Sempéré, Ph. Dieudonné
Laboratoire des Verres - UMR CNRS 5587, Université de Montpellier, France
The Study of Thermal Disordering of The KSc(WO4)2 Crystal Structure by Raman Spectroscopy
M. M±czka, J. Hanuza, N. Sidorov and S. Kojima
Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Wrocław, Poland
The Electrochemical Redox Reactions in Solvated Silica Sol-Gel Glass
Marcin Opallo
Institute of Physical Chemistry, Polish Academy of Sciences, Warszawa, Poland
Structure, Spectroscopy and Dielectric Properties of BaTiO3:Eu3+ Nanocrystallites Prepared by The Sol-Gel Method
D. Hreniaka, E. Łukowiaka, K. Maruszewskia,b, R. P±zikc, and W. Stręka
aInstitute for Low Temperature and Structure Research, Polish Academy of Sciences, Wrocław, Poland
bMechanical Faculty, Institute of Materials Science and Applied Mechanics,Wrocław University of Technology, Poland
cChemistry Department, Opole University, Poland
Optical Behavior of Sol-Gel Derived Photonic Structures Formed by Submicron Silica Spheres
M. Jasiorski1, K. Maruszewski1,2 and W. Stręk1
1Institute for Low Temperature and Structure Research, Polish Academy of Sciences, Wrocław, Poland
2Mechanical Faculty, Institute of Materials Science and Applied Mechanics,Wrocław University of Technology, Poland
Lu2O3:Eu, a New X-ray Phosphor
E. Zych*, D. Hreniak and W. Strek
*Faculty of Chemistry, University of Wrocław, Poland
Institute for Low Temperature and Structure Research Polish Academy of Sciences, Wrocław, Poland
Review of Luminescence and Magnetic Properties of Antiferromagnetic KMnCl3, RbMnCl3, TlMnCl3 and (CnH2n+1NH3)2MnCl4 (n = 1, 2)
Małgorzata Pawłowska, Walter Wojciechowski
Institute of Inorganic Chemistry and Metallurgy of Rare Elements,
Wrocław University of Technology, Wrocław, Poland
Photochromic Hybrid Sol-Gel Coatings: Preparation, Properties, and Applications
A. Klukowska1, U. Posset1, G. Schottner1, M. L. Wis2,
C. Salemi-Delvaux 2, V. Malatesta2
1 Fraunhofer-Institut Silicatforschung (ISC), Würzburg, Germany
2 Great Lakes Chemical Corporation, San Donato Milanese, Italy
Opportunities for Sol-Gel Materials in Fuel Cells
Lisa C. Klein
Rutgers-the State University of New Jersey, Ceramic & Materials Engineering, NJ, USA
