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Published on: March 27, 2018
Diffuse neutron scattering in relaxor ferroelectric PbMg1/3Nb2/3O3
Sergey Vakhrushev1, Alexandre Ivanov, Jiri Kulda
1Ioffe Physico-Technical Institute, 26, Politekhnicheskaya, 194021 St.-Petersburg, Russia. s.vakhrushev@mail.ioffe.ru
High-energy neutron spin-echo spectroscopy revealed static-like diffuse scattering in relaxor ferroelectric crystals. Both anisotropic and transverse components were found to be elastic, offering insights into their physical origins.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Crystallography
Background:
- Relaxor ferroelectric crystals exhibit complex dynamic behavior.
- Diffuse scattering has been previously observed in these materials, but its intrinsic properties remained unclear.
Purpose of the Study:
- To precisely measure the intrinsic width of diffuse scattering in relaxor ferroelectrics.
- To investigate the anisotropic and transverse components of this scattering.
- To determine the elastic or inelastic nature of the diffuse scattering contributions.
Main Methods:
- Utilized high-energy resolution neutron spin-echo spectroscopy.
- Performed measurements across different Brillouin zones.
- Achieved an experimental accuracy of 1 microeV.
Main Results:
- Measured the intrinsic width of diffuse scattering in relaxor ferroelectrics.
- Observed distinct anisotropic and transverse scattering components.
- Confirmed both components are elastic, with static-like behavior.
Conclusions:
- The diffuse scattering in relaxor ferroelectrics possesses static-like characteristics.
- The findings provide crucial data for understanding the underlying physical mechanisms of this scattering.
- Further theoretical and experimental investigations are warranted to fully elucidate the origins.
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