Anisotropic lattice expansion determined during flash sintering of BiFeO3 by in-situ energy-dispersive X-ray diffraction
Journal Article
·
· Scripta Materialia
- Rutgers Univ., Piscataway, NJ (United States)
- Univ. of Seville, Seville (Spain)
- Univ. of Seville, Seville (Spain); Harvard Univ., Cambridge, MA (United States)
- Argonne National Lab. (ANL), Lemont, IL (United States)
BiFeO3 has a Curie temperature (TC) of 825 °C, making it difficult to sinter with conventional methods while maintaining the purity of the material, as unavoidably secondary phases appear at temperatures above Tc. Flash sintering is a relatively new technique that saves time and energy compared to other sintering methods. BiFeO3 was flash sintered at 500 °C to achieve 90% densification. In-situ energy dispersive X-ray diffraction (EDXRD) reflected that the material did not undergo any phase transformation, having been sintered well below the TC. Interestingly, anisotropic lattice expansion in the materialwas observed when the sample was exposed to the electric field.
- Research Organization:
- Argonne National Lab. (ANL), Lemont, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Scientific User Facilities Division
- Grant/Contract Number:
- AC02-06CH11357
- OSTI ID:
- 1526260
- Alternate ID(s):
- OSTI ID: 1703859
OSTI ID: 22831438
- Journal Information:
- Scripta Materialia, Journal Name: Scripta Materialia Journal Issue: C Vol. 162; ISSN 1359-6462
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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