Articles | Volume 33, issue 5
Eur. J. Mineral., 33, 591–603, 2021
https://doi.org/10.5194/ejm-33-591-2021

Special issue: Probing the Earth: experiments and mineral physics at mantle...

Eur. J. Mineral., 33, 591–603, 2021
https://doi.org/10.5194/ejm-33-591-2021

Research article 30 Sep 2021

Research article | 30 Sep 2021

Deformation of NaCoF3 perovskite and post-perovskite up to 30 GPa and 1013 K: implications for plastic deformation and transformation mechanism

Jeffrey P. Gay et al.

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Cited articles

Ammann, M. W., Brodholt, J. P., Wookey, J., and Dobson, D. P.: First-principles constraints on diffusion in lower-mantle minerals and a weak D′′ layer, Nature, 465, 462–465, https://doi.org/10.1038/nature09052, 2010. 
Bachmann, F., Hielscher, R., and Schaeben, H.: Solid State Phenomena, Texture Analysis with MTEX – Free and Open Source Software Toolbox, 160, 63–68, https://doi.org/10.4028/www.scientific.net/SSP.160.63 (last access 21 September 2021) 2010 (code available at: https://mtex-toolbox.github.io, last access: 21 September 2021). 
Beghein, C., Trampert, J., and van Heijst, H. J.: Radial anisotropy in seismic reference models of the mantle, J. Geophys. Res.-Sol. Ea., 111, B02303, https://doi.org/10.1029/2005JB003728, 2006. 
Boioli, F., Carrez, P., Cordier, P., Devincre, B., Gouriet, K., Hirel, P., Kraych, A., and Ritterbex, S.: Pure climb creep mechanism drives flow in Earth's lower mantle, Science Advances, 3, 1–7, https://doi.org/10.1126/sciadv.1601958​​​​​​​, 2017. 
Carrez, P., Ferré, D., and Cordier, P.: Implications for plastic flow in the deep mantle from modelling dislocations in MgSiO3 minerals, Nature, 446, 68–70, https://doi.org/10.1038/nature05593, 2007. 
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Short summary
We examined the experimental deformation and phase transition of a bridgmanite analogue, NaCoF3, using a resistive-heated diamond anvil cell and a synchrotron radiation source. We wanted to observe the behavior of NaCoF3 under uniaxial compression and its plastic properties, as well as to determine if it is a suitable analogue for natural samples. We observe 100 and 001 compression textures and link those to the dominant deformation mechanism in the perovskite structure.