Hydrothermal synthesis of Dy-doped BaTiO3 powders

Date

1999-12-01

Author

Oren, EE
Tas, AC

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Submicron-sized (similar to 200 nm), monodisperse, and spherical powders of pure and dysprosium (Dy)doped (0.8 at, pet) BaTiO3 have been prepared by "hydrothermal synthesis" at 90 degrees C in an air atmosphere. The powder preparation procedure developed in this work did not necessitate the use of strict and expensive processes, which were commonly required for the removal of free CO2 present in the atmosphere. The prepared powders were found to be crystalline, pure, and contained no BaCO3 as an impurity phase. Pure and Dy-doped BaTiO3 powders synthesized at 90 degrees C had the pseudocubic (space group: Pm-3m) crystal structure. Grain growth characteristics of pure and Dy-doped BaTiO3 pellets were compared during sintering in air over the temperature range from 1200 degrees C to 1500 degrees C. The Dy doping was found to be significantly effective in inhibiting the anomalous grain growth in BaTiO3 samples heated at or above 1200 degrees C.

Subject Keywords

Materials Chemistry, Mechanics of Materials, Condensed Matter Physics, Metals and Alloys

URI

https://hdl.handle.net/11511/64949

Journal

METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE

DOI

https://doi.org/10.1007/s11663-999-0115-5

Collections

Department of Metallurgical and Materials Engineering, Article

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Citation Formats

E. Oren and A. Tas, “Hydrothermal synthesis of Dy-doped BaTiO3 powders,” METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE, pp. 1089–1093, 1999, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/64949.