Journal
APPLIED PHYSICS LETTERS
Volume 94, Issue 1, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3056660
Keywords
bismuth compounds; ferroelectric Curie temperature; ferroelectric switching; ferroelectric transitions; lead compounds; nanostructured materials; piezoceramics; plasma materials processing; sintering
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Funding
- MEC (Spain) [MAT2007-61884, MAT2008-02003/NAN]
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We have studied the macroscopic electrical properties of highly dense, nanostructured ceramics of BiScO3-PbTiO3 with high Curie temperature and piezoelectric activity. Materials were processed by spark plasma sintering of nanocrystalline powder obtained by mechanosynthesis. Results indicate that the nanostructured material still presents the ferroelectric transition above 700 K. Ferroelectric switching is unambiguously demonstrated. Furthermore, ceramic disks were poled and their radial piezoelectric resonance was excited, which has not been achieved in nanostructured BaTiO3 ceramics.
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