منابع مشابه
Thermal equation of state of (Mg0.9Fe0.1)2SiO4 olivine
In situ synchrotron X-ray diffraction measurements have been carried out on San Carlos olivine (Mg0.9Fe0.1)2SiO4 up to 8 GPa and 1073 K. Data analysis using the high-temperature Birch–Murnaghan (HTBM) equation of state (EoS) yields the temperature derivative of the bulk modulus (∂KT/∂T)P =−0.019± 0.002 GPa K−1. The thermal pressure (TH) approach gives αKT = 4.08± 0.10× 10−3 GPa K−1, from which ...
متن کاملThermal elasticity of (Fex,Mg1 x)2SiO4 olivine and wadsleyite
[1] We present first-principles results for elastic moduli (bulk, K, and shear, G) and acoustic velocities (compressional, VP, shear, VS, and bulk VΦ) of olivine (a) and wadsleyite (b) (Fex,Mg1 x)2SiO4, at high pressure (P) and temperature (T) with varying iron content (0≤ x≤ 0.125). Pressure and temperature derivatives of these properties are analyzed. We show that adding 12.5% of Fe in forste...
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I n t r o d u c t i o n THE structures of the cancrinite-group minerals are character ized by parallel s ix-membered rings consisting of alternating A104 and SiO4 tetrahedra. The hexagonal symmetry is the result of the stacking of such six-membered rings in an AB... sequence. This stacking leads to large continuous channels that are formed by twelve-membered rings of alternating A1Oa and SiO4 t...
متن کاملFundamentals of Thermal Expansion and Thermal Contraction
Thermal expansion is an important property of substances. Its theoretical prediction has been challenging, particularly in cases the volume decreases with temperature, i.e., thermal contraction or negative thermal expansion at high temperatures. In this paper, a new theory recently developed by the authors has been reviewed and further examined in the framework of fundamental thermodynamics and...
متن کاملFiber - Optic Sensing of Linear Thermal Expansion (RESEARCH NOTES)
The use of a LED fiber-optic sensor to measure displacement and linear thermal expansion is described. It has a sensitivity of about 0.6 mV/mm, a resolution of 1.25 mm, and a dynamic rang of 400 mm for displacement measurements. For thermal expansion, it shows a sensitivity of about 3.5 mV/C, and the experimental linear expansion values are in agreement with those calculated. The reported senso...
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ژورنال
عنوان ژورنال: Proceedings of the Imperial Academy
سال: 1934
ISSN: 0369-9846,1881-1140
DOI: 10.2183/pjab1912.10.83