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Meeting MS&T23: Materials Science & Technology
Symposium Phase Transformations in Ceramics: Science and Applications
Presentation Title Spinodal Decomposition in Ferroelectric Crystals
Author(s) Catherine Bishop
On-Site Speaker (Planned) Catherine Bishop
Abstract Scope Spinodal decomposition, as opposed to nucleation and growth, is a pathway to fine dispersions of new phases. Enhanced piezoelectric performance has been reported for ferroelectrics with polymorphic phase boundary (PPB) compositions and ferroelectric nanodomains, which could be achieved by a spinodal pathway. A few reports of spinodal decomposition in ferroelectrics have appeared recently, but no analysis of spinodal decomposition in ferroelectric crystals was found by the author. Here, the conditions for spinodal decomposition of a paraelectric crystal to ferroelectric states are determined and critical wavelengths are identified. Predictions are made for single phase ferroelectrics and PPB ferroelectrics using the ferroelectric multi-phasefield model. A rich set of behaviours are predicted, and specific predictions are made for barium titanate, PZT and two-phase BZT-50BCT. Critical wavelengths vary from tens of unit cells to hundreds of unit cells.


Computational Study of Site-disordered AgSbI4
Crystal Structure Solution and Phase Transformations of CaZr4(PO4)6 and SrZr4(PO4)6
Effect of Cations Decoration on Ti3C2Tx MXene, its Stability and Phase Transformation at High Temperatures
Elevated Temperature Phase Control of Two-dimensional Mo2TiC2Tx Carbide Through Defect Engineering
Enhancing Oxidation Resistance of Silicon Nitride Using Ca2+ Stabilizer
Microstructural Evolution and Associated Kinetics of Seeded Solid State Single Crystal Growth of CoTi2O5
Phase Stability and Cation Partitioning in Multi-rare Earth Aluminates and Zirconates
Phase Transformations in Ceramic Materials under Extreme External Forcing
Progress on Phase Stability of Substituted Rare Earth Disilicate Compositions for Environmental Barrier Coatings
Spinodal Decomposition in Ferroelectric Crystals
Structural Evolution of MgAl2O4 and NiAl2O4 Disordered Spinel Oxides Studied via In Situ Neutron Total Scattering
Using Total Scattering Techniques to Explore Fundamental Aspects of the Structural Organization in Weberite-type Tantalate Oxides

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