@article{b58c7db09e5e11dcbee902004c4f4f50,
title = "High-pressure optical spectroscopy and X-ray diffraction studies on synthetic cobalt aluminum silicate garnet",
abstract = "The pressure-induced behavior of spin-allowed dd-bands of VIIICo2+ in the absorption spectra of synthetic Co3Al2Si3O12 garnet was studied from 10-4 to 13 GPa. The plots of the peak energy vs. pressure for the three sharpest well resolved bands at ca. 5160, 17 680, and 18 740 cm-1 display small but discernible breaks in linear relations between 4 and 5 GPa. Datafromsingle-crystalX-raydiffractionData from single-crystal X-ray diffraction likewise show discontinuities in trends of CoO8 polyhedral volume and distortion, and Co-O and Si-O bond distances over this pressure range. These effects are related to a pressure-induced phase transition from the {\ss}- to a-isostructural polymorph of Co3Al2Si3O12.",
keywords = "Faculty of Science, High-pressure optical spectroscopy, phase transitions, cobalt-bearing garnet, high-pressure X-ray diffraction",
author = "{N. Taran}, Michail and Fabrizio Nestola and Haruo Ohashi and Monika Koch-M{\"u}ller and {Balic Zunic}, Tonci and Olsen, {Lars Arnskov}",
year = "2007",
language = "English",
volume = "92",
pages = "1616–1623",
journal = "American Mineralogist",
issn = "0003-004X",
publisher = "Mineralogical Society of America",
}