Journal ArticleDOI
The vibrational spectrum of zircon (zrsio4)
TLDR
In this paper, the 36 k=0 modes of vibration were classified using group theoretical methods using kramers-kronig theory and the dielectric parameters were derived from the reflection spectrum using kramer-krusig theory.Abstract:
This paper reports polarized infrared and raman studies on zircon, zrsio4. The 36 k=0 modes of vibration are classified using group theoretical methods. The dielectric parameters epsilon minutes and epsilonseconds have been derived from the reflection spectrum using kramers-kronig theory. Measurements have also been made on the elements of the raman polarizability tensor, and the angular dependence of the scattered intensity has been studied for several bands. The crystal field splittings of the vibrational levels of the silicate ions are large, but some simple force constant considerations lead to the conclusion that the silicate ions are essentially molecular units.read more
Citations
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Journal ArticleDOI
Further characterisation of the 91500 zircon crystal
Michael Wiedenbeck,John M. Hanchar,William H. Peck,Paul J. Sylvester,John W. Valley,Martin J. Whitehouse,Andreas Kronz,Yuichi Morishita,Lutz Nasdala,Jens Fiebig,Ian A. Franchi,J.-P. Girard,Richard C. Greenwood,R. W. Hinton,Noriko T. Kita,Paul R.D. Mason,Marc D. Norman,M. Ogasawara,Philip M. Piccoli,Dieter Rhede,Hisao Satoh,B. Schulz-Dobrick,Øyvind Skår,Mj. Spicuzza,Kentaro Terada,Andrew G. Tindle,Shigeko Togashi,Torsten Vennemann,Q. Xie,Yong-Fei Zheng +29 more
TL;DR: In this article, the results from a second characterisation of the 91500 zircon, including data from electron probe microanalysis, laser ablation inductively coupled plasma-mass spectrometer (LA-ICP-MS), secondary ion mass spectrometry (SIMS), and laser fluorination analyses, were reported.
Journal ArticleDOI
Co-operative Jahn-Teller effects
G A Gehring,K A Gehring +1 more
TL;DR: The co-operative Jahn-Teller effect is a phase transition which is driven by the interaction between localized orbital electronic states and the crystal lattice as mentioned in this paper, and the possible origins, symmetries and properties of the electron-lattice interactions and how they lead to possible hamiltonians for the coupled system are discussed.
Journal ArticleDOI
Raman spectra of the rare earth orthophosphates
TL;DR: In this article, the Raman spectra of anhydrous crystalline samples of all of the lanthanide orthophosphates (with the exception of PmP04) have been obtained.
Journal ArticleDOI
Thermodynamics and lattice vibrations of minerals: 2. Vibrational characteristics of silicates
TL;DR: In this paper, the properties of the lattice vibrational properties of minerals are discussed, particularly those properties which strongly influence the thermodynamic behavior of the minerals, and a method is given for enumeration of the fraction of total vibrational modes which are internal stretching modes.
Journal ArticleDOI
Metamictization of zircon: Raman spectroscopic study
Ming Zhang,Ekhard K. H. Salje,Ian Farnan,Ann Graeme-Barber,Philippe Daniel,Rodney C. Ewing,Andrew M Clark,Hugues Leroux +7 more
TL;DR: Raman spectroscopy of radiation-damaged natural zircon samples shows increased line broadening and shifts of phonon frequencies with increasing radiation dose as discussed by the authors, which can be used to determine the degree of radiation damage.
References
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Journal ArticleDOI
Infrared and Raman spectra of polyatomic molecules
TL;DR: In this article, the authors present a series on molecular spectra and molecular structure, and a large number of tables have also been included in which theoretical results are summarized, or observed data collected, for the benefit of those carrying out research work in the field of infrared and Raman spectra or related fields.
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The Raman effect in crystals
TL;DR: A review of progress in the theoretical and experimental study of the Raman effect in crystals during the past ten years is given in this article, where the theory of those properties of long-wavelength lattice vibrations in both cubic and uniaxial crystals which can be studied by Raman scattering.
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Raman Effect in Zinc Oxide
TL;DR: In this paper, the frequency and symmetry character of the fundamental modes of the Raman effect in zinc oxide has been determined using the continuous helium-neon and ionized argon lasers as sources.
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Raman Spectra of Ti O 2 , Mg F 2 , Zn F 2 , Fe F 2 , and Mn F 2
TL;DR: In this paper, the first-order Raman spectra have been measured at room temperature in five materials of the point group: Ti${\mathrm{O}}_{2}$, Mg${1g}$, Zn${2g}, Fe${3g} and Mn${4g}.
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Motions of Molecules in Condensed Systems: I. Selection Rules, Relative Intensities, and Orientation Effects for Raman and Infra‐Red Spectra
TL;DR: In this paper, the distribution of point symmetries within space groups and the population of the unit cell were used to derive selection rules for Raman and infra-red spectra of crystals.