Crossref journal-article
AIP Publishing
Applied Physics Letters (317)
Abstract

While the lattice volume in the solid-solution Ba1−xCaxTiO3 decreases with increasing x, the Curie temperature remains unaffected, in contrast to Ba1−xSrxTiO3. We have determined the origin of this phenomenon by comparing the local structures in (Ba,Ca)TiO3 and (Ba,Sr)TiO3. Reverse Monte Carlo refinements of instantaneous atomic positions using simultaneous fitting of multiple types of experimental data (neutron total scattering, X-ray absorption fine structure, patterns of diffuse scattering in electron diffraction) reveal both ferroelectric Ca displacements and their amplification of the Ti off-centering, which mitigate the lattice-volume effects. The activity of Ca is triggered by the anomalously strained Ca-O bonds.

Bibliography

Levin, I., Krayzman, V., & Woicik, J. C. (2013). Local-structure origins of the sustained Curie temperature in (Ba,Ca)TiO3 ferroelectrics. Applied Physics Letters, 102(16).

Authors 3
  1. Igor Levin (first)
  2. Victor Krayzman (additional)
  3. Joseph C. Woicik (additional)
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Dates
Type When
Created 12 years, 3 months ago (April 26, 2013, 9:41 a.m.)
Deposited 2 years, 1 month ago (July 1, 2023, 8:26 p.m.)
Indexed 1 day, 4 hours ago (Aug. 23, 2025, 9:45 p.m.)
Issued 12 years, 4 months ago (April 22, 2013)
Published 12 years, 4 months ago (April 22, 2013)
Published Online 12 years, 4 months ago (April 25, 2013)
Published Print 12 years, 4 months ago (April 22, 2013)
Funders 1
  1. U.S. Department of Energy 10.13039/100000015

    Region: Americas

    gov (National government)

    Labels8
    1. Energy Department
    2. Department of Energy
    3. United States Department of Energy
    4. ENERGY.GOV
    5. US Department of Energy
    6. USDOE
    7. DOE
    8. USADOE
    Awards2
    1. DE-AC02-98CH10886
    2. DE-AC52-06NA25396

@article{Levin_2013, title={Local-structure origins of the sustained Curie temperature in (Ba,Ca)TiO3 ferroelectrics}, volume={102}, ISSN={1077-3118}, url={http://dx.doi.org/10.1063/1.4802996}, DOI={10.1063/1.4802996}, number={16}, journal={Applied Physics Letters}, publisher={AIP Publishing}, author={Levin, Igor and Krayzman, Victor and Woicik, Joseph C.}, year={2013}, month=apr }