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Anisotropic lattice expansion determined during flash sintering of BiFeO3 by in-situ energy-dispersive X-ray diffraction

Journal Article · · Scripta Materialia
 [1];  [2];  [3];  [1];  [2];  [1];  [4];  [1]
  1. Rutgers Univ., Piscataway, NJ (United States)
  2. Univ. of Seville, Seville (Spain)
  3. Univ. of Seville, Seville (Spain); Harvard Univ., Cambridge, MA (United States)
  4. 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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Cited By (3)

Crystallization, non-isothermal kinetics and structural analysis of nanocrystalline multiferroic bismuth ferrite (BiFeO3) synthesized by combustion method journal April 2019
Processing and properties of Bi 0.98 R 0.02 FeO 3 (R = La, Sm, Y) ceramics flash sintered at ~650°C in <5 s journal August 2019
Selective laser flash sintering of 8‐YSZ journal September 2019

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