Veber, Philippe ; Benabdallah, Feres ; Liu, Hairui ; Buse, Gabriel ; Josse, Michael ; Maglione, Mario (2015):
Growth and Characterization of Lead-free
Piezoelectric Single Crystals.
In: Materials, 8 (11), pp. 7962-7978. MDPI Publishing, ISSN 1996-1944,
[Article]
Abstract
Lead-free piezoelectric materials attract more and more attention owing to the environmental toxicity of lead-containing materials. In this work, we review our first attempts of single crystal grown by the top-seeded solution growth method of BaTiO3 substituted with zirconium and calcium (BCTZ) and (K0.5Na0.5)NbO3 substituted with lithium, tantalum, and antimony (KNLSTN). The growth methodology is optimized in order to reach the best compositions where enhanced properties are expected. Chemical analysis and electrical characterizations are presented for both kinds of crystals. The compositionally-dependent electrical performance is investigated for a better understanding of the relationship between the composition and electrical properties. A cross-over from relaxor to ferroelectric state in BCTZ solid solution is evidenced similar to the one reported in ceramics. In KNLSTN single crystals, we observed a substantial evolution of the orthorhombic-to-tetragonal phase transition under minute composition changes.
| Item Type: | Article |
|---|---|
| Erschienen: | 2015 |
| Creators: | Veber, Philippe ; Benabdallah, Feres ; Liu, Hairui ; Buse, Gabriel ; Josse, Michael ; Maglione, Mario |
| Title: | Growth and Characterization of Lead-free Piezoelectric Single Crystals |
| Language: | English |
| Abstract: | Lead-free piezoelectric materials attract more and more attention owing to the environmental toxicity of lead-containing materials. In this work, we review our first attempts of single crystal grown by the top-seeded solution growth method of BaTiO3 substituted with zirconium and calcium (BCTZ) and (K0.5Na0.5)NbO3 substituted with lithium, tantalum, and antimony (KNLSTN). The growth methodology is optimized in order to reach the best compositions where enhanced properties are expected. Chemical analysis and electrical characterizations are presented for both kinds of crystals. The compositionally-dependent electrical performance is investigated for a better understanding of the relationship between the composition and electrical properties. A cross-over from relaxor to ferroelectric state in BCTZ solid solution is evidenced similar to the one reported in ceramics. In KNLSTN single crystals, we observed a substantial evolution of the orthorhombic-to-tetragonal phase transition under minute composition changes. |
| Journal or Publication Title: | Materials |
| Volume of the journal: | 8 |
| Issue Number: | 11 |
| Publisher: | MDPI Publishing |
| Uncontrolled Keywords: | crystal growth; lead-free materials; piezoelectrics |
| Divisions: | 11 Department of Materials and Earth Sciences 11 Department of Materials and Earth Sciences > Material Science 11 Department of Materials and Earth Sciences > Material Science > Nonmetallic-Inorganic Materials |
| Date Deposited: | 23 Mar 2016 13:00 |
| URL / URN: | http://pubs.rsc.org/en/Content/ArticleLanding/2016/CE/C5CE02... |
| Identification Number: | doi:10.3390/ma8115436 |
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