Anzeige
Erschienen in:
05.11.2015
Preparation and electrical properties of SrBi2−x Sm x Nb2O9 lead-free piezoelectric ceramics
Erschienen in: Journal of Materials Science: Materials in Electronics | Ausgabe 2/2016
EinloggenAktivieren Sie unsere intelligente Suche, um passende Fachinhalte oder Patente zu finden.
Wählen Sie Textabschnitte aus um mit Künstlicher Intelligenz passenden Patente zu finden. powered by
Markieren Sie Textabschnitte, um KI-gestützt weitere passende Inhalte zu finden. powered by
Abstract
Sm-doped strontium bismuth niobate SrBi2−x
Sm
x
Nb2O9 (0 ≤ x ≤ 0.10) ceramics were prepared by a conventional solid-state reaction method. The X-ray diffraction study showed that the ceramics possess a pure structure and no secondary phase can be detected. The scanning electron microscopy indicates that the grains of all the samples are all well-defined. The dielectric, ferroelectric and piezoelectric properties of the SBSN-x ceramics were investigated and found that the optimum electrical properties can be obtained at x = 0.03, which are as follows: 2P
r
= 14 μC cm−2, d
33 = 19 pC/N, T
c
= 435 °C. In addition, after annealing at 400 °C, the piezoelectric constant (d
33) of this component ceramic sample remains 18 pC/N, so it has good temperature stability for high temperature applications.