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

Yoon, Bola; Yadav, Devinder; Raj, Rishi; Sortino, Emanuele P.; Ghose, Sanjit; Sarin, Pankaj; Shoemaker, Daniel

doi:10.1111/jace.15375

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

Journal Article · Fri Dec 29 00:00:00 EST 2017 · Journal of the American Ceramic Society

DOI:https://doi.org/10.1111/jace.15375· OSTI ID:1426460

^[1]; Yadav, Devinder ^[1]; ^[1]; Sortino, Emanuele P. ^[1]; Ghose, Sanjit ^[2]; Sarin, Pankaj ^[3]; ^[4]

Univ. of Colorado, Boulder, CO (United States). Materials Science and Engineering Program and Dept. of Mechanical Engineering
Brookhaven National Laboratory (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II). Energy Sciences Directorate/Photon Science Division
Oklahoma State Univ., Tulsa, OK (United States). School of Materials Science and Engineering
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.

View Accepted Manuscript (DOE)

Research Organization:: Brookhaven National Laboratory (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II)

Sponsoring Organization:: US Army Research Office (ARO); US Dept. of the Navy, Office of Naval Research (ONR); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)

Grant/Contract Number:: AC02-98CH10886; SC0012704

OSTI ID:: 1426460

Alternate ID(s):: OSTI ID: 1415153

Report Number(s):: BNL--203349-2018-JAAM

Journal Information:: Journal of the American Ceramic Society, Journal Name: Journal of the American Ceramic Society Journal Issue: 5 Vol. 101; ISSN 0002-7820

Publisher:: American Ceramic SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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Cited By (5)

Defect‐Mediated Anisotropic Lattice Expansion in Ceramics as Evidence for Nonthermal Coupling between Electromagnetic Fields and Matter Jha, Shikhar Krishn; Nakamura, Nathan; Zhang, Shuyan Advanced Engineering Materials, Vol. 21, Issue 12 https://doi.org/10.1002/adem.201900762	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 Yoon, Bola; Yadav, Devinder; Ghose, Sanjit Journal of the American Ceramic Society https://doi.org/10.1111/jace.15974	journal	October 2018
The effects of external fields in ceramic sintering Jha, Shikhar K.; Phuah, Xin Li; Luo, Jian Journal of the American Ceramic Society https://doi.org/10.1111/jace.16061	journal	September 2018
On the synchronicity of flash sintering and phase transformation Yoon, Bola; Yadav, Devinder; Ghose, Sanjit Journal of the American Ceramic Society, Vol. 102, Issue 6 https://doi.org/10.1111/jace.16335	journal	February 2019
Element‐specific displacements in defect‐enriched TiO ₂ : Indication of a flash sintering mechanism Jongmanns, Malte; Wolf, Dietrich E. Journal of the American Ceramic Society, Vol. 103, Issue 1 https://doi.org/10.1111/jace.16696	journal	July 2019

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