Is the spin transition in Fe2+-bearing perovskite visible in seismology?
نویسندگان
چکیده
منابع مشابه
Thermoelasticity of Fe2+-bearing bridgmanite
We present local density approximation augmented by the Hubbard-type correction calculations of high-temperature elastic properties of bridgmanite with composition (Mg(1−x)Fe x )SiO3 for 0≤×≤0.125. Results of elastic moduli and acoustic velocities for the Mg end-member (x=0) agree very well with the latest high-pressure and high-temperature experimental measurements. In the iron-bearing system,...
متن کاملSpin transition in (Mg,Fe)SiO3 perovskite under pressure
Article history: We present a density functi Received 28 February 2008 Received in revised form 18 September 2008 Accepted 22 September 2008 Editor: R.D. van der Hilst
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[1] We investigate the effect of pressure on the electronic spin state of ferric iron on Al-bearing MgSiO3-perovskite using first-principle computations. Ferric iron (6.25 mol%) and Al (6.25 mol%) substitute for Mg and Si respectively. Five substitution models on different atomic position pairs are examined. Our results show that spin state transition from high spin (HS) to low spin (LS) occurs...
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چکیده ندارد.
15 صفحه اولSpin transition of Fe2+ in ringwoodite (Mg,Fe)2SiO4 at high pressures
Electronic spin transitions of iron in the Earth’s mantle minerals are of great interest to deep-Earth researchers because their effects on the physical and chemical properties of mantle minerals can significantly affect our understanding of the properties of the deep planet. Here we have studied the electronic spin states of iron in ringwoodite (Mg0.75Fe0.25)2SiO4 using synchrotron Mössbauer s...
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ژورنال
عنوان ژورنال: Geophysical Research Letters
سال: 2010
ISSN: 0094-8276
DOI: 10.1029/2010gl043320