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Article

Phase Stability and Transport Properties of (ZrO2)0.91−x(Sc2O3)0.09(Yb2O3)x Crystals (x = 0–0.01)

1
Prokhorov General Physics Institute of the Russian Academy of Sciences, 38 Vavilov str., 119991 Moscow, Russia
2
Institute of Solid State Physics of the Russian Academy of Sciences, 2 Academician Osip’yan str., 142432 Chernogolovka, Moscow District, Russia
3
Institute of Physics and Chemistry, National Research Mordovia State University, 68 Bolshevistskaya str., 430005 Saransk, Republic of Mordovia, Russia
4
Department of Materials Science of Semiconductors and Dielectrics, National University of Science and Technology (MISIS), 4 Leninskiy prospekt, 119049 Moscow, Russia
*
Author to whom correspondence should be addressed.
Received: 10 December 2020 / Revised: 12 January 2021 / Accepted: 14 January 2021 / Published: 21 January 2021
Phase stability and transport properties of (ZrO2)0.91−x(Sc2O3)0.09(Yb2O3)x crystals (x = 0–0.01) have been studied before and after air annealing at 1000 °C for 400 h. The crystals have been grown by radio frequency (RF) heating in a cold crucible. The microstructure, phase composition, and electrical conductivity of the crystals have been studied using optical microscopy, X-ray diffraction, Raman spectroscopy, and impedance spectroscopy. Phase stability and degradation of ionic conductivity of the crystals upon long-term high-temperature heat treatment have been discussed. We show that the stabilization of ZrO2 co-doped with 9 mol.% Sc2O3 and 1 mol.% Yb2O3 provides transparent uniform crystals with the pseudocubic t″ phase structure having high phase stability. Crystals of this composition had the highest conductivity in the entire temperature range. Long-term high-temperature annealing of these crystals did not lead to conductivity degradation. View Full-Text
Keywords: directional melt crystallization; skull melting; single crystal; zirconia; scandia; dielectric materials; solid electrolytes; ionic conductors directional melt crystallization; skull melting; single crystal; zirconia; scandia; dielectric materials; solid electrolytes; ionic conductors
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MDPI and ACS Style

Borik, M.; Korableva, G.; Kulebyakin, A.; Kuritsyna, I.; Larina, N.; Lomonova, E.; Milovich, F.; Myzina, V.; Ryabochkina, P.; Sidorova, N.; Tabachkova, N.; Volkova, T. Phase Stability and Transport Properties of (ZrO2)0.91−x(Sc2O3)0.09(Yb2O3)x Crystals (x = 0–0.01). Crystals 2021, 11, 83. https://0-doi-org.brum.beds.ac.uk/10.3390/cryst11020083

AMA Style

Borik M, Korableva G, Kulebyakin A, Kuritsyna I, Larina N, Lomonova E, Milovich F, Myzina V, Ryabochkina P, Sidorova N, Tabachkova N, Volkova T. Phase Stability and Transport Properties of (ZrO2)0.91−x(Sc2O3)0.09(Yb2O3)x Crystals (x = 0–0.01). Crystals. 2021; 11(2):83. https://0-doi-org.brum.beds.ac.uk/10.3390/cryst11020083

Chicago/Turabian Style

Borik, Mikhail, Galina Korableva, Alexey Kulebyakin, Irina Kuritsyna, Nataliya Larina, Elena Lomonova, Filipp Milovich, Valentina Myzina, Polina Ryabochkina, Nataliya Sidorova, Nataliya Tabachkova, and Tatyana Volkova. 2021. "Phase Stability and Transport Properties of (ZrO2)0.91−x(Sc2O3)0.09(Yb2O3)x Crystals (x = 0–0.01)" Crystals 11, no. 2: 83. https://0-doi-org.brum.beds.ac.uk/10.3390/cryst11020083

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