Journal Article

PUBDB-2023-05971

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Chemical Pressure Effect on the Stabilization of Rock-Salt ZnO—Li$_{n−2}$MeO$_{n−1}$ Solid Solutions Synthesized at High Pressure

Sokolov, P. S.Extern* ; Baranov, A. N.Extern* ; Solozhenko, V. L. (Corresponding author)Extern*

2023
MDPI Basel

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Please use a persistent id in citations: doi:10.3390/ma16155336  doi:10.3204/PUBDB-2023-05971

Abstract: Metastable ZnO—Lin$_{n−2}$MeO$_{n−1}$ (Me = Sc$^{3+}$, Ti$^{4+}$, Ta$^{5+}$) solid solutions with a rock-salt structure were synthesized through the solid-state reaction of ZnO with Li$_{n−2}$Me$^{n+}$O$_{n−2}$ (n = 3, 4, 5) complex oxides at 7.7 GPa and 1300–1500 K. In all investigated systems, single-phase rock-salt solid solutions can be quenched down to ambient conditions in a wide (up to 80 mol% ZnO) concentration range. The phase composition, thermal stability, and thermal expansion of the recovered rock-salt solid solutions were studied by synchrotron powder X-ray diffraction. At ambient pressure, these solid solutions exhibit high thermal stability (up to 1000 K), with the decomposition temperature and decomposition products depending on the nature of the multiple charge cations.

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Contributing Institute(s):

1. DOOR-User (DOOR ; HAS-User)

Research Program(s):

1. 899 - ohne Topic (POF4-899) (POF4-899)
2. FS-Proposal: I-20070033 EC (I-20070033-EC) (I-20070033-EC)
3. FS-Proposal: I-20100234 EC (I-20100234-EC) (I-20100234-EC)

Experiment(s):

1. DORIS Beamline B2 (DORIS III)
2. DORIS Beamline F2.1 (DORIS III)

Appears in the scientific report 2023

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