ISIS Neutron and Muon Source Data Journal
This is a page describing data taken during an experiment at the ISIS Neutron and Muon Source. Information about the ISIS Neutron and Muon Source can be found at https://www.isis.stfc.ac.uk.
Local Structure in (K,Na)NbO3 Piezoelectric Ceramics
Abstract: KxNa1-xNbO3 (KNN)-based solid solutions are promising lead-free piezoelectrics for ceramic actuators. In this system, the long-range order of octahedral rotations and ferroelectric displacements coexists with significant local disorder of both types of displacements. Industrially relevant KNN compositions are those around the morphotropic phase boundary (MPB) at x=0.5 that separates polar orthorhombic (O) and monoclinic (M) structures. On heating, both phases transform to a tetragonal (T) polymorph. Enhanced piezoelectric properties are observed at this polymorphic phase boundary (PPB), but the exact role of this PPB in the enhancement of a piezoelectric response remains unclear. The goal of the proposed experiments is to provide critical neutron total scattering data to determine the relationships between the local and average atomic displacements across the MPB and PPB.
Principal Investigator: Dr Igor Levin
Experimenter: Dr Matthew Tucker
DOI: 10.5286/ISIS.E.RB1520268
ISIS Experiment Number: RB1520268
| Part DOI | Instrument | Public release date | Download Link |
|---|---|---|---|
| 10.5286/ISIS.E.63846669 | POLARIS | 12 October 2018 | Download |
Publisher: STFC ISIS Neutron and Muon Source
Data format: RAW/Nexus
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Data Citation
The recommended format for citing this dataset in a research
publication is as:
[author], [date], [title], [publisher],
[doi]
For Example:
Dr Igor Levin et al; (2015): Local Structure in (K,Na)NbO3 Piezoelectric Ceramics, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1520268
