P
P. Dera
Researcher at University of Chicago
Publications - 11
Citations - 405
P. Dera is an academic researcher from University of Chicago. The author has contributed to research in topics: Mantle (geology) & Post-perovskite. The author has an hindex of 6, co-authored 11 publications receiving 390 citations. Previous affiliations of P. Dera include Carnegie Institution for Science & University of Hawaii at Manoa.
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Journal ArticleDOI
Electronic spin state of iron in lower mantle perovskite
Jie Li,Viktor V. Struzhkin,Ho-kwang Mao,Jinfu Shu,Russell J. Hemley,Yingwei Fei,Bjorn O. Mysen,P. Dera,Vitali B. Prakapenka,Guoyin Shen +9 more
TL;DR: Experimental evidence for spin-pairing transition in aluminum-bearing silicate perovskite (Mg,Fe)(Si,Al)O(3) under the lower mantle pressures is presented and it is demonstrated that as pressure increases, iron in perovkite transforms gradually from the initial high- spin state toward the final low-spin state.
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Intermediate-spin ferrous iron in lowermost mantle post-perovskite and perovskite
Jung-Fu Lin,Heather C. Watson,György Vankó,Esen E. Alp,Vitali B. Prakapenka,P. Dera,Viktor V. Struzhkin,Atsushi Kubo,Jiyong Zhao,Catherine McCammon,William J. Evans +10 more
TL;DR: The Earth's lowermost mantle displays an important mineralogical transition from perovskite to post-perovskites, but the spin state of iron in these phases remains poorly known.
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Polymorphic phase transition in Superhydrous Phase B
TL;DR: In this article, the authors synthesized superhydrous phase B (shy-B) at 22 GPa and two different temperatures: 1200°C (LT) and 1400°C(HT) using a multi-anvil apparatus.
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Elastic behavior and pressure-induced structure evolution of topaz up to 45 GPa
TL;DR: In this paper, the behavior of a natural topaz, Al2.00Si1.05O4.00(OH0.26F1.75), was investigated by means of in situ single-crystal synchrotron X-ray diffraction up to 45 GPa.
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A new mineral with an olivine structure and pyroxene composition in the shock-induced melt veins of Tenham L6 chondrite
TL;DR: In this article, the authors reported a new mineral that occurs in shock-induced melt veins of the Tenham L6 chondrite, identified by transmission electron microscopy (TEM).