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Title: Measurement of O and Ti atom displacements in TiO 2 during flash sintering experiments

Journal Article · · Journal of the American Ceramic Society
DOI:https://doi.org/10.1111/jace.15375· OSTI ID:1426460
ORCiD logo [1];  [1]; ORCiD logo [1];  [1];  [2];  [3]; ORCiD logo [4]
  1. Univ. of Colorado, Boulder, CO (United States). Materials Science and Engineering Program and Dept. of Mechanical Engineering
  2. Brookhaven National Laboratory (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II). Energy Sciences Directorate/Photon Science Division
  3. Oklahoma State Univ., Tulsa, OK (United States). School of Materials Science and Engineering
  4. Univ. of Illinois, Urbana, IL (United States). Dept. of Materials Science and Engineering

In-situ flash experiments on rutile TiO2 were performed at the synchrotron at the Brookhaven National Laboratory. Pair distribution function analysis of total X-ray scattering measurements yielded mean-square atomic displacements of oxygen and titanium atoms during the progression of the 3 stages of flash. The displacements are measured to be far greater for oxygen atoms than for titanium atoms. Thus, these large displacements may signal an “elastic softening” of the lattice, which, recently, has been predicted as a precursor to the onset of flash.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); US Dept. of the Navy, Office of Naval Research (ONR); US Army Research Office (ARO)
Grant/Contract Number:
SC0012704; N00014‐15‐1‐2505; W911NF‐17‐1‐0142; AC02-98CH10886
OSTI ID:
1426460
Alternate ID(s):
OSTI ID: 1415153
Report Number(s):
BNL-203349-2018-JAAM; TRN: US1802288
Journal Information:
Journal of the American Ceramic Society, Vol. 101, Issue 5; ISSN 0002-7820
Publisher:
American Ceramic SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 51 works
Citation information provided by
Web of Science

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Cited By (5)

Defect‐Mediated Anisotropic Lattice Expansion in Ceramics as Evidence for Nonthermal Coupling between Electromagnetic Fields and Matter journal September 2019
Reactive flash sintering: MgO and α‐Al 2 O 3 transform and sinter into single‐phase polycrystals of MgAl 2 O 4 journal October 2018
The effects of external fields in ceramic sintering journal September 2018
On the synchronicity of flash sintering and phase transformation journal February 2019
Element‐specific displacements in defect‐enriched TiO 2 : Indication of a flash sintering mechanism journal July 2019

Figures / Tables (4)