Phase Transformation Process of Tb 2O 3 at Elevated Temperature

14 Pages Posted: 22 May 2019

See all articles by Junyu Zhang

Junyu Zhang

Chinese Academy of Sciences (CAS), Shanghai Institute of Ceramics, State Key Laboratory of High Performance Ceramics and Superfine Microstructure

Hetuo Chen

Chinese Academy of Sciences (CAS), Shanghai Institute of Ceramics, State Key Laboratory of High Performance Ceramics and Superfine Microstructure

Junping Wang

Chinese Academy of Sciences (CAS), Shanghai Institute of Ceramics, State Key Laboratory of High Performance Ceramics and Superfine Microstructure

Shiwei Wang

Chinese Academy of Sciences (CAS), Shanghai Institute of Ceramics, State Key Laboratory of High Performance Ceramics and Superfine Microstructure

Dewen Wang

Chinese Academy of Sciences (CAS), Shanghai Institute of Ceramics, State Key Laboratory of High Performance Ceramics and Superfine Microstructure

Dan Han

Chinese Academy of Sciences (CAS), Shanghai Institute of Ceramics, State Key Laboratory of High Performance Ceramics and Superfine Microstructure

Jian Zhang

Chinese Academy of Sciences (CAS) - Research Center for Transparent Ceramics

Date Written: May 21, 2019

Abstract

Phase transformation process of magneto-optical material Tb2O3 at elevated temperature has been investigated in different atmosphere. When heating in air, Tb2O3 is firstly oxidized to TbO1.81 at 500°C. Finally, TbO1.81 is respectively deoxidized to TbO1.714 at 600°C and Tb2O3 at 988°C. It is remarkable that the most stable phase at room temperature is not Tb2O3, but TbO1.81. While sintering in vacuum, the reversible phase transition of Tb2O3above 1600°C makes Tb2O3crack from inside to outside. These findings provide a deep understanding of controlling and avoiding the phase transformations of Tb2O3, which has great guiding significance to preparing Tb2O3materials.

Keywords: Phase Transformations, Terbium Oxide, Magneto-Optical Materials, Faraday Rotator, Oxidation

Suggested Citation

Zhang, Junyu and Chen, Hetuo and Wang, Junping and Wang, Shiwei and Wang, Dewen and Han, Dan and Zhang, Jian, Phase Transformation Process of Tb 2O 3 at Elevated Temperature (May 21, 2019). Available at SSRN: https://ssrn.com/abstract=3391561 or http://dx.doi.org/10.2139/ssrn.3391561

Junyu Zhang

Chinese Academy of Sciences (CAS), Shanghai Institute of Ceramics, State Key Laboratory of High Performance Ceramics and Superfine Microstructure

1295 Dingxi Road
Shanghai, 200050
China

Hetuo Chen

Chinese Academy of Sciences (CAS), Shanghai Institute of Ceramics, State Key Laboratory of High Performance Ceramics and Superfine Microstructure

1295 Dingxi Road
Shanghai, 200050
China

Junping Wang

Chinese Academy of Sciences (CAS), Shanghai Institute of Ceramics, State Key Laboratory of High Performance Ceramics and Superfine Microstructure

1295 Dingxi Road
Shanghai, 200050
China

Shiwei Wang (Contact Author)

Chinese Academy of Sciences (CAS), Shanghai Institute of Ceramics, State Key Laboratory of High Performance Ceramics and Superfine Microstructure ( email )

1295 Dingxi Road
Shanghai, 200050
China

Dewen Wang

Chinese Academy of Sciences (CAS), Shanghai Institute of Ceramics, State Key Laboratory of High Performance Ceramics and Superfine Microstructure

1295 Dingxi Road
Shanghai, 200050
China

Dan Han

Chinese Academy of Sciences (CAS), Shanghai Institute of Ceramics, State Key Laboratory of High Performance Ceramics and Superfine Microstructure

1295 Dingxi Road
Shanghai, 200050
China

Jian Zhang

Chinese Academy of Sciences (CAS) - Research Center for Transparent Ceramics ( email )

Shanghai, 200050
China

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