Mechanical and thermal energy transduction utilizing phase transformations in 32 mode relaxor-ferroelectric single crystals

Wen D. Dong; Peter Finkel; Christopher S. Lynch

doi:10.1117/12.2013767

10 April 2013 Mechanical and thermal energy transduction utilizing phase transformations in 32 mode relaxor-ferroelectric single crystals

Wen D. Dong, Peter Finkel, Christopher S. Lynch

Author Affiliations +

Proceedings Volume 8688, Active and Passive Smart Structures and Integrated Systems 2013; 86881O (2013) https://doi.org/10.1117/12.2013767
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2013, San Diego, California, United States

Abstract

This work presents experimental evidence of giant electromechanical and electrothermal transduction under ferroelectric/ferroelectric rhombohedral-orthorhombic phase transformation. Combinations of stress, electric field and temperature drive a phase transformation from rhombohedral to orthorhombic in [110]cut and poled ferroelectric single crystals. This phase transformation is accompanied by a large jump in polarization and strain. The results indicate that the ferroelectric crystals produce significant electrical energy density per cycle. Electrical transduction properties are measured from mechanical and thermal excitations applied to a ternary Pb(In_1/2Nb_1/2)O₃-Pb(Mg_1/3Nb_2/3)O₃-PbTiO₃ (PINPMN- PT) single crystal of composition just at the rhombohedral side of a morphotropic phase boundary. An overview of 32 mode phase transformation transduction characterization is discussed.

Citation Download Citation

Wen D. Dong, Peter Finkel, and Christopher S. Lynch "Mechanical and thermal energy transduction utilizing phase transformations in 32 mode relaxor-ferroelectric single crystals", Proc. SPIE 8688, Active and Passive Smart Structures and Integrated Systems 2013, 86881O (10 April 2013); https://doi.org/10.1117/12.2013767

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