Theory-Guided Synthesis of a Metastable Lead-Free Piezoelectric Polymorph
- National Renewable Energy Lab. (NREL), Golden, CO (United States)
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Berkeley, CA (United States)
- Pennsylvania State Univ., University Park, PA (United States). Dept. of Materials Science and Engineering. Materials Research Inst.
- Colorado School of Mines, Golden, CO (United States)
- SLAC National Accelerator Lab., Menlo Park, CA (United States). Applied Energy Programs
- SLAC National Accelerator Lab., Menlo Park, CA (United States). Applied Energy Programs. Stanford Synchrotron Radiation Lightsource
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Berkeley, CA (United States). Dept. of Materials Science and Engineering
Many technologically critical materials are metastable under ambient conditions, yet the understanding of how to rationally design and guide the synthesis of these materials is limited. This work presents an integrated approach that targets a metastable lead-free piezoelectric polymorph of SrHfO3. First-principles calculations predict that the previous experimentally unrealized, metastable P4mm phase of SrHfO3 should exhibit a direct piezoelectric response (d33) of 36.9 pC N-1(compared to d33= 0 for the ground state). Combining computationally optimized substrate selection and synthesis conditions lead to the epitaxial stabilization of the polar P4mm phase of SrHfO3 on SrTiO3. The films are structurally consistent with the theory predictions. A ferroelectric-induced large signal effective converse piezoelectric response of 5.2 pm V-1 for a 35 nm film is observed, indicating the ability to predict and target multifunctionality. This illustrates a coupled theory-experimental approach to the discovery and realization of new multifunctional polymorphs.
- Research Organization:
- Energy Frontier Research Centers (EFRC) (United States). Center for Next Generation of Materials by Design: Incorporating Metastability (CNGMD); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); National Renewable Energy Laboratory (NREL), Golden, CO (United States); Pennsylvania State Univ., University Park, PA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)
- Grant/Contract Number:
- AC02-76SF00515; AC36-08GO28308; DMR 1420620; DE‐AC36‐08GO28308; DE‐AC02‐76SF00515; AC02-05CH11231
- OSTI ID:
- 1462358
- Alternate ID(s):
- OSTI ID: 1436813; OSTI ID: 1479418
- Journal Information:
- Advanced Materials, Vol. 30, Issue 25; ISSN 0935-9648
- Publisher:
- WileyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Exploring new approaches towards the formability of mixed-ion perovskites by DFT and machine learning
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