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Donald J. Weidner

Researcher at Stony Brook University

Publications -  210
Citations -  11899

Donald J. Weidner is an academic researcher from Stony Brook University. The author has contributed to research in topics: Bulk modulus & Perovskite (structure). The author has an hindex of 64, co-authored 210 publications receiving 11355 citations. Previous affiliations of Donald J. Weidner include Centre national de la recherche scientifique & University College London.

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Journal ArticleDOI

Thermal equation of state of stishovite

Jun Liu, +5 more
- 16 Apr 1999 - 
TL;DR: In this article, a cubic anvil-based DIA-type, cubic-anvil apparatus (SAM85) interfaced with in situ synchrotron X-ray diffraction at the superconducting wiggler beamline (X-17B) was used to study the pressure-volume-temperature (P-V-T ) behavior in SiO 2 -stishovite.
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Electronic spin state of ferric iron in Al‐bearing perovskite in the lower mantle

Li Li, +7 more
- 01 Sep 2005 - 
TL;DR: In this paper, the effect of pressure on the electronic spin state of ferric iron on Al-bearing MgSiO3-perovskite using first-principle computations was investigated.
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Aluminum in magnesium silicate perovskite: Formation, structure, and energetics of magnesium‐rich defect solid solutions

Alexandra Navrotsky, +6 more
- 01 Jul 2003 - 
TL;DR: In this paper, the authors compare the energy properties of the stoichiometric and nonstoichiometric MgSiO3-MgAlO25 join in the lower mantle of perovskite.
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Phase stability of CaSiO3 perovskite at high pressure and temperature: Insights from ab initio molecular dynamics

Li Li, +8 more
- 16 May 2006 - 
TL;DR: In this paper, the authors reported the dynamics of the structure of CaSiO3 perovskite from ab initio molecular dynamics (AIMD) calculations at high pressure (P up to 130 GPa) and high temperature (T up to 5000 K).
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Effect of phase transitions on compressional-wave velocities in the Earth’s mantle

Li Li, +1 more
- 21 Aug 2008 - 
TL;DR: Experimental data are presented that demonstrate softening of the bulk modulus within the two-phase loop of olivine–ringwoodite, and the generalization of these observations to aluminium-controlled phase transitions raises the possibility of large velocity perturbations throughout the upper 1,000 km of the mantle.