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Modern Concepts in Material Science - MCMS

ISSN: 2692-5397

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Open Access Opinion

Phase Stability of Rare-Earth Sesquioxides - New Approach

Giora Kimmel1* and Witold Lojkowski2

1Department of Materials Engineering, Ben-Gurion University of the Negev, Israel

2Institute of High-Pressure Physics, Polish Academy of Sciences, Poland

Corresponding Author

Received Date: December 17, 2019;  Published Date: January 03, 2020

Abstract

Based on low temperature synthesis it was stated that solid rare earth sesquioxides (RESOX) below 2000 °C belong to three structure types as function of temperature and metallic ionic radius. (I) Hexagonal for La2O3sub> and Nd2O3 with the highest metallic ionic radius, (II) Low Temperature (LT) cubic and High Temperature (HT) monoclinic for Sm2O3, Eu2O3 and Gd2O3 with medium metallic ionic radius, (III) cubic for Dy2O3, Y2O3, Ho2O3, Er2O3, Tm2O 3sub>, Yb2O3, Lu2O3 and Sc2O3 with low metallic ionic radius [1,2].

Article Details
Citation

  • Giora Kimmel, Witold Lojkowski. Phase Stability of Rare-Earth Sesquioxides - New Approach. Mod Concept Material Sci. 2(3): 2020. MCMS.MS.ID.000540.

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