Charles A. Geiger
University of Salzburg
129 Papers
1.2K Citations
Charles A. Geiger is an academic researcher from University of Salzburg. The author has contributed to research in topics: Pyrope & Grossular. The author has an hindex of 33, co-authored 123 publications. Previous affiliations of Charles A. Geiger include University of Bayreuth & University of Kiel.
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Papers
Crystal chemistry and stability of "Li7La3Zr2O12" garnet: a fast lithium-ion conductor
Charles A. Geiger,Evgeny V. Alekseev,Biljana Lazic,Martin Fisch,Thomas Armbruster,Ramona Langner,Michael Fechtelkord,Namjun Kim,Thomas Pettke,Werner Weppner +9 more
TL;DR: Several crystal chemical properties appear to promote the high Li-ion conductivity in cubic Al-containing Li(7)La(3)Zr(2)O(12) garnet, which is the best conducting Li-oxide garnet discovered to date.
672
Raman spectra of silicate garnets
B. A. Kolesov,Charles A. Geiger +1 more
TL;DR: In this article, the single-crystal polarized Raman spectra of four natural silicate garnets with compositions close to end-members almandine, grossular, andradite, and uvarovite, were measured, along with the powder Spectra of synthetic pyrope-grossular and Almandine-spessartine solid solutions.
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•Journal Article
Single-crystal X-ray structure study of synthetic pyrope almandine garnets at 100 and 293 K
TL;DR: The crystal structures of synthetic pyrope (Mg3AI2Si3012), almandine (FeI2Si 3012), and the solid-solution garnet compositions PY8o-Alm2o, PY6o-alm4o, and PY2oAlm8o have been refined in space group Ia1d from high-precision X-ray diffraction data with sin 0/>..> 0.4 A-I measured at 100 and 293 K.
141
DFT Study of the Role of Al3+ in the Fast Ion-Conductor Li7–3xAl3+xLa3Zr2O12 Garnet
Daniel Rettenwander,Peter Blaha,Robert Laskowski,Karlheinz Schwarz,Patrick Bottke,Martin Wilkening,Charles A. Geiger,Georg Amthauer +7 more
TL;DR: It is shown that Al3+ prefers the tetrahedrally coordinated 24d site and a distorted 4-fold coordinated 96h site, while broad 27Al NMR resonances result reflecting the distribution of different isotropic chemical shifts and quadrupole coupling constants.
120
A Raman spectroscopic study of Fe–Mg olivines
B. A. Kolesov,Charles A. Geiger +1 more
- 01 Apr 2004
TL;DR: In this paper, the properties of the internal SiO4 tetrahedra of polycrystalline forsterite and fayalite were investigated using Raman spectroscopy.
118