Stabilization of Polar Nanoregions in Pb-free Ferroelectrics
(2018) In Physical Review Letters 120(20).- Abstract
The formation of polar nanoregions through solid-solution additions is known to enhance significantly the functional properties of ferroelectric materials. Despite considerable progress in characterizing the microscopic behavior of polar nanoregions (PNR), understanding their real-space atomic structure and dynamics of their formation remains a considerable challenge. Here, using the method of dynamic pair distribution function, we provide direct insights into the role of solid-solution additions towards the stabilization of polar nanoregions in the Pb-free ferroelectric of Ba(Zr,Ti)O3. It is shown that for an optimum level of substitution of Ti by larger Zr ions, the dynamics of atomic displacements for ferroelectric polarization are... (More)
The formation of polar nanoregions through solid-solution additions is known to enhance significantly the functional properties of ferroelectric materials. Despite considerable progress in characterizing the microscopic behavior of polar nanoregions (PNR), understanding their real-space atomic structure and dynamics of their formation remains a considerable challenge. Here, using the method of dynamic pair distribution function, we provide direct insights into the role of solid-solution additions towards the stabilization of polar nanoregions in the Pb-free ferroelectric of Ba(Zr,Ti)O3. It is shown that for an optimum level of substitution of Ti by larger Zr ions, the dynamics of atomic displacements for ferroelectric polarization are slowed sufficiently below THz frequencies, which leads to increased local correlation among dipoles within PNRs. The dynamic pair distribution function technique demonstrates a unique capability to obtain insights into locally correlated atomic dynamics in disordered materials, including new Pb-free ferroelectrics, which is necessary to understand and control their functional properties.
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- author
- Pramanick, A. ; Dmowski, W. ; Egami, T. ; Budisuharto, A. Setiadi ; Weyland, F. ; Novak, N. ; Christianson, A. D. ; Borreguero, J. M. ; Abernathy, D. L. and Jørgensen, M. R.V. LU
- organization
- publishing date
- 2018-05-18
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review Letters
- volume
- 120
- issue
- 20
- article number
- 207603
- publisher
- American Physical Society
- external identifiers
-
- scopus:85047190013
- pmid:29864364
- ISSN
- 0031-9007
- DOI
- 10.1103/PhysRevLett.120.207603
- language
- English
- LU publication?
- yes
- id
- 740fb66f-0ce2-4d3d-8301-70e2158799c9
- date added to LUP
- 2018-06-01 13:25:15
- date last changed
- 2024-08-05 18:26:48
@article{740fb66f-0ce2-4d3d-8301-70e2158799c9, abstract = {{<p>The formation of polar nanoregions through solid-solution additions is known to enhance significantly the functional properties of ferroelectric materials. Despite considerable progress in characterizing the microscopic behavior of polar nanoregions (PNR), understanding their real-space atomic structure and dynamics of their formation remains a considerable challenge. Here, using the method of dynamic pair distribution function, we provide direct insights into the role of solid-solution additions towards the stabilization of polar nanoregions in the Pb-free ferroelectric of Ba(Zr,Ti)O3. It is shown that for an optimum level of substitution of Ti by larger Zr ions, the dynamics of atomic displacements for ferroelectric polarization are slowed sufficiently below THz frequencies, which leads to increased local correlation among dipoles within PNRs. The dynamic pair distribution function technique demonstrates a unique capability to obtain insights into locally correlated atomic dynamics in disordered materials, including new Pb-free ferroelectrics, which is necessary to understand and control their functional properties.</p>}}, author = {{Pramanick, A. and Dmowski, W. and Egami, T. and Budisuharto, A. Setiadi and Weyland, F. and Novak, N. and Christianson, A. D. and Borreguero, J. M. and Abernathy, D. L. and Jørgensen, M. R.V.}}, issn = {{0031-9007}}, language = {{eng}}, month = {{05}}, number = {{20}}, publisher = {{American Physical Society}}, series = {{Physical Review Letters}}, title = {{Stabilization of Polar Nanoregions in Pb-free Ferroelectrics}}, url = {{http://dx.doi.org/10.1103/PhysRevLett.120.207603}}, doi = {{10.1103/PhysRevLett.120.207603}}, volume = {{120}}, year = {{2018}}, }