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Optical in-situ spectroscopy of high-temperature properties of olivines
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Jianmin Shi
Published/Copyright:
November 30, 2010
Abstract
An in-situ optical spectroscopy investigation at high temperatures is reported into the defect chemistry and cation kinetics of cobalt-containing olivines. The equilibrium defect optical absorption is studied as a function of oxygen activity at high temperatures. The kinetics of cation redistribution between the two non-equivalent sites in the olivine crystal structure is investigated by temperature-jump relaxation experiments. It is found that both the compositional dependence of kinetics of the cation redistribution process and the dependence of point defect concentration on oxygen activity favor a defect model involving cation vacancies and electron holes (Co3+).
Published Online: 2010-11-30
Published in Print: 2011-01
© by Oldenbourg Wissenschaftsverlag, Braunschweig, Germany
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Keywords for this article
Olivine;
Optical spectroscopy;
Defect chemistry;
Cation distribution;
Kinetics
Articles in the same Issue
- Low amplitude, low frequency elastic measurements using Dynamic Mechanical Analyzer (DMA) spectroscopy
- Nascent zeolite frameworks grown from amorphous gels – identification and prospects for crystal engineering
- Crystallographic point groups in five dimensions
- New polyhedra – Part 1
- New polyhedra – Part 2
- Temperature-dependent structural transformations of hydrothermally synthesized cubic Li2TiO3 studied by in-situ neutron diffraction
- Synthesis, crystal structure, electrical and thermal transport properties of the skutterudite-derivative RhGe1.5–xSe1.5+x
- Structural study of mefloquinium salts with three isomeric n-nitrobenzoates (n = 2, 3, and 4)
- Structure, twinning, and ferroelasticity of bis(tetramethylammonium) hexafluorotitanate(IV), (TMA)2[TiF6]
- Ab-initio study of Al1–xGaxSb compound
- Optical in-situ spectroscopy of high-temperature properties of olivines
- Synthesis, structure and properties of Nd2BC containing the trans-dibora–(1,3)-butadiene [C=B–B=C]8–-unit
