Non-resonant electromechanical energy harvesting using inter-ferroelectric phase transitions

Journal Article · Mon Oct 26 04:00:00 EDT 2015 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4934591· OSTI ID:22485969

Pérez Moyet, Richard; Stace, Joseph; Amin, Ahmed ^[1]; Finkel, Peter ^[2]

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1. Sensors and Sonar Systems Department, Naval Undersea Warfare Center Newport, Newport, Rhode Island 02841 (United States)
2. Materials Science and Technology Division, Naval Research Laboratory, Washington, DC 20375 (United States)

Non-resonant electromechanical energy harvesting is demonstrated under low frequency excitation (<50 Hz) using [110]{sub C}-poled lead indium niobate-lead magnesium niobate-lead titanate relaxor ferroelectric single crystals with compositions near the morphotropic phase boundary. The efficiency of power generation at the stress-induced phase transition between domain-engineered rhombohedral and orthorhombic ferroelectric states is as much as four times greater than is obtained in the linear piezoelectric regime under identical measurement conditions but during loading below the coercive stress of the phase change. The phase transition mode of electromechanical transduction holds potential for non-resonant energy harvesting from low-frequency vibrations and does not require mechanical frequency up-conversion.

• OSTI ID: 22485969
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 17 Vol. 107; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
EFFICIENCY
EXCITATION
FERROELECTRIC MATERIALS
INDIUM
LEAD
MAGNESIUM
MONOCRYSTALS
NIOBATES
ORTHORHOMBIC LATTICES
PHASE TRANSFORMATIONS
PIEZOELECTRICITY
POWER GENERATION
STRESSES
TITANATES
TRIGONAL LATTICES