start-ver=1.4
cd-journal=joma
no-vol=128
cd-vols=
no-issue=10
article-no=
start-page=843
end-page=846
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2020
dt-pub=2020101
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Crystal structure of Ca(Fe0.4Si0.6)O2.8 oxygen-deficient perovskite
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=The crystal structure of Ca(Fe3+0.4Si0.6)O2.8 oxygen-deficient perovskite phase synthesized at 12 GPa and 1400 ��C was studied using synchrotron powder X-ray diffraction. The phase is isostructural to low-pressure phase of Ca(Al0.4Si0.6)O2.8. The structure was refined by the Rietveld method and is consists of a perovskite-like triple-layer of corner-shared (Fe3+,Si)O6 octahedra and a double-layer of SiO4 tetrahedra those are stacked alternatively in the [111] direction of ideal cubic perovskite. Small degree of Fe3+/Si disorder was detected between two octahedral sites. The structure is compared with other oxygen-deficient perovskites.
en-copyright=
kn-copyright=

en-aut-name=KanzakiMasami
en-aut-sei=Kanzaki
en-aut-mei=Masami
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

affil-num=1
en-affil=Institute for Planetary Materials, Okayama University
kn-affil=
en-keyword=Crystal structure
kn-keyword=Crystal structure
en-keyword=Rietveld refinement
kn-keyword=Rietveld refinement
en-keyword=Oxygen-deficient perovskite
kn-keyword=Oxygen-deficient perovskite
en-keyword=High-pressure silicate
kn-keyword=High-pressure silicate
END