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Title: Solving a Historical Puzzle

Abstract

We report x-ray absorption near edge structure (XANES) measurements of four closely related perovskite materials: SrTiO3, CaTiO3, CaZrO3, and SrZrO3. This data is used to address the conceptually important, early EXAFS experiment of Perel and Deslattes. That experiment attempted to distinguish between the then-competing short-range and long-range theories of EXAFS by cross-material comparison of the EXAFS for the metal ions in the four perovskites reported here. Their inconclusive result is surprising, given the modern understanding of EXAFS. Our new measurements show strong disagreements with the prior results at multiple edges. When analyzed in qualitative, conceptual framework of the original study, our new results are in strong agreement with the short-range order theory. This solves a historical puzzle in the early scientific development of x-ray absorption spectroscopy.

Authors:
; ;  [1];  [2]
  1. Department of Physics, University of Washington, Seattle, WA 98195 (United States)
  2. Advance Photon Source, Argonne National Laboratory, Argonne, IL 60439 (United States)
Publication Date:
OSTI Identifier:
21054583
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 882; Journal Issue: 1; Conference: XAFS13: 13. international conference on X-ray absorption fine structure, Stanford, CA (United States), 9-14 Jul 2006; Other Information: DOI: 10.1063/1.2644463; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ABSORPTION SPECTROSCOPY; CALCIUM COMPOUNDS; COMPARATIVE EVALUATIONS; CRYSTAL STRUCTURE; FINE STRUCTURE; IONS; PEROVSKITE; STRONTIUM TITANATES; X-RAY SPECTROSCOPY; ZIRCONATES

Citation Formats

Groves, M., Stern, E. A., Seidler, G., and Balasubramanian, M. Solving a Historical Puzzle. United States: N. p., 2007. Web. doi:10.1063/1.2644463.
Groves, M., Stern, E. A., Seidler, G., & Balasubramanian, M. Solving a Historical Puzzle. United States. doi:10.1063/1.2644463.
Groves, M., Stern, E. A., Seidler, G., and Balasubramanian, M. Fri . "Solving a Historical Puzzle". United States. doi:10.1063/1.2644463.
@article{osti_21054583,
title = {Solving a Historical Puzzle},
author = {Groves, M. and Stern, E. A. and Seidler, G. and Balasubramanian, M.},
abstractNote = {We report x-ray absorption near edge structure (XANES) measurements of four closely related perovskite materials: SrTiO3, CaTiO3, CaZrO3, and SrZrO3. This data is used to address the conceptually important, early EXAFS experiment of Perel and Deslattes. That experiment attempted to distinguish between the then-competing short-range and long-range theories of EXAFS by cross-material comparison of the EXAFS for the metal ions in the four perovskites reported here. Their inconclusive result is surprising, given the modern understanding of EXAFS. Our new measurements show strong disagreements with the prior results at multiple edges. When analyzed in qualitative, conceptual framework of the original study, our new results are in strong agreement with the short-range order theory. This solves a historical puzzle in the early scientific development of x-ray absorption spectroscopy.},
doi = {10.1063/1.2644463},
journal = {AIP Conference Proceedings},
number = 1,
volume = 882,
place = {United States},
year = {Fri Feb 02 00:00:00 EST 2007},
month = {Fri Feb 02 00:00:00 EST 2007}
}