Average and local structure of the Pb-free ferroelectric perovskites and
- Univ. of California, Santa Barbara, CA (United States). Materials Research Laboratory
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Chemical and Engineering Materials Division
- Murata Manufacturing, Co., Ltd., Nagaokakyo, Kyoto (Japan)
- Univ. of California, Santa Barbara, CA (United States). Materials Department and Materials Research Laboratory
The characteristic structural off -centering of Pb2+ in oxides, associated with its 6s2 lone pair, allows it to play a dominant role in polar materials, and makes it a somewhat ubiquitous component of ferroelectrics. In this work, we examine the compounds Sr0.9Sn0.1TiO3 and Ba0.79Ca0.16Sn0.05TiO3 using neutron total scattering techniques with data acquired at di erent temperatures. In these compounds, previously reported as ferroelectrics, Sn2+ appears to display some of the characteristics of Pb2+. We compare the local and long-range structures of the Sn2+-substituted compositions to the unsubstituted parent compounds SrTiO3 and BaTiO3. Lastly, we find that even at these small substitution levels, the Sn2+ lone pairs drive the local ordering behavior, with the local structure of both compounds more similar to the structure of PbTiO3 rather than the parent compounds.
- Research Organization:
- Univ. of California, Santa Barbara, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE
- Grant/Contract Number:
- DMR-1403862
- OSTI ID:
- 1254476
- Alternate ID(s):
- OSTI ID: 1229913
- Journal Information:
- Physical Review. B, Condensed Matter and Materials Physics, Vol. 92, Issue 21; ISSN 1098-0121
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Structure–Curie temperature relationships in BaTiO 3 -based ferroelectric perovskites: Anomalous behavior of ( Ba , Cd ) TiO 3 from DFT, statistical inference, and experiments
|
journal | April 2016 |
Local Structural Heterogeneity and Electromechanical Responses of Ferroelectrics: Learning from Relaxor Ferroelectrics
|
journal | July 2018 |
Effect of A‐site substitutions on energy storage properties of BaTiO 3 ‐BiScO 3 weakly coupled relaxor ferroelectrics
|
journal | April 2019 |
Similar Records
New stable ternary alkaline-earth metal Pb(II) oxides: and
Fermi surface of the flat-band intermetallics