Giant piezoelectric voltage coefficient in grain-oriented modified PbTiO3 material
- Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States). Center for Energy Harvesting Materials and Systems (CEHMS); Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States). Inst. for Critical Technology and Applied Science (ICTAS); Virginia Tech
- Michigan Technological Univ., Houghton, MI (United States). Dept. of Materials Science and Engineering
- Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States). Center for Energy Harvesting Materials and Systems (CEHMS)
- Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States). Center for Energy Harvesting Materials and Systems (CEHMS); Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States). Inst. for Critical Technology and Applied Science (ICTAS)
A rapid surge in the research on piezoelectric sensors is occurring with the arrival of the Internet of Things. Single-phase oxide piezoelectric materials with giant piezoelectric voltage coefficient (g, induced voltage under applied stress) and high Curie temperature (Tc) are crucial towards providing desired performance for sensing, especially under harsh environmental conditions. Here, we report a grain-oriented (with 95% <001> texture) modified PbTiO3 ceramic that has a high Tc (364°C) and an extremely large g33 (115 × 10-3 Vm N-1) in comparison with other known single-phase oxide materials. Our results reveal that self-polarization due to grain orientation along the spontaneous polarization direction plays an important role in achieving large piezoelectric response in a domain motion-confined material. Finally, the phase field simulations confirm that the large piezoelectric voltage coefficient g33 originates from maximized piezoelectric strain coefficient d33 and minimized dielectric permittivity ε33 in [001]-textured PbTiO3 ceramics where domain wall motions are absent.
- Research Organization:
- Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States)
- Sponsoring Organization:
- National Science Foundation (NSF); USDOE Office of Science (SC)
- Grant/Contract Number:
- SC0002196
- OSTI ID:
- 1393406
- Journal Information:
- Nature Communications, Journal Name: Nature Communications Vol. 7; ISSN 2041-1723
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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