TU Darmstadt / ULB / TUbiblio

Comparative study of two lead-free piezoceramics using diffraction techniques

Schmitt, Ljubomira Ana and Hinterstein, Manuel and Kleebe, Hans-Joachim and Fuess, Hartmut (2010):
Comparative study of two lead-free piezoceramics using diffraction techniques.
In: Journal of Applied Crystallography, pp. 805-810, 43, (4), ISSN 0021-8898,
[Online-Edition: http://dx.doi.org/10.1107/S0021889810015980],
[Article]

Abstract

A comparative study of two distinct lead-free piezoceramics, (Bi(0.5)Na(0.5)TiO(3))(0.92)-( BaTiO(3))(0.06)-( K(0.5)Na(0.5)NbO(3))(0.02) and (Bi(0.5)Na(0.5)TiO(3))(0.94)-(BaTiO(3))(0.05)-(K(0.5)Na(0.5)NbO(3))(0.01), termed 92-06-02 and 94-05-01, respectively, is presented. The samples were investigated by complementary diffraction techniques, namely X-ray, neutron and electron diffraction. Transmission electron microscopy (TEM) and powder diffraction experiments clearly revealed the presence of both rhombohedral and tetragonal phases in space groups R3c and P4bm, respectively. Superlattice reflections observed in the diffraction patterns were used to identify the two phases. It was found that sample 92-06-02, with a high proportion of the nonpolar tetragonal phase, shows a grainy contrast, whereas specimen 94-05-01 features domain-like contrast, related to a higher rhombohedral phase fraction. The combination of local scale analyses via TEM with X-ray and neutron diffraction provides the experimental basis for further structural investigations.

Item Type: Article
Erschienen: 2010
Creators: Schmitt, Ljubomira Ana and Hinterstein, Manuel and Kleebe, Hans-Joachim and Fuess, Hartmut
Title: Comparative study of two lead-free piezoceramics using diffraction techniques
Language: English
Abstract:

A comparative study of two distinct lead-free piezoceramics, (Bi(0.5)Na(0.5)TiO(3))(0.92)-( BaTiO(3))(0.06)-( K(0.5)Na(0.5)NbO(3))(0.02) and (Bi(0.5)Na(0.5)TiO(3))(0.94)-(BaTiO(3))(0.05)-(K(0.5)Na(0.5)NbO(3))(0.01), termed 92-06-02 and 94-05-01, respectively, is presented. The samples were investigated by complementary diffraction techniques, namely X-ray, neutron and electron diffraction. Transmission electron microscopy (TEM) and powder diffraction experiments clearly revealed the presence of both rhombohedral and tetragonal phases in space groups R3c and P4bm, respectively. Superlattice reflections observed in the diffraction patterns were used to identify the two phases. It was found that sample 92-06-02, with a high proportion of the nonpolar tetragonal phase, shows a grainy contrast, whereas specimen 94-05-01 features domain-like contrast, related to a higher rhombohedral phase fraction. The combination of local scale analyses via TEM with X-ray and neutron diffraction provides the experimental basis for further structural investigations.

Journal or Publication Title: Journal of Applied Crystallography
Volume: 43
Number: 4
Uncontrolled Keywords: TRANSMISSION ELECTRON-MICROSCOPY; PEROVSKITE STRUCTURES; NA0.5BI0.5TIO3; PHASE
Divisions: DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > B - Characterisation > Subproject B3: Structure Characterization of Piezoelectric Ceramics With Respect to Electrical Fatigue
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > B - Characterisation
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue
Zentrale Einrichtungen
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres
DFG-Collaborative Research Centres (incl. Transregio)
Date Deposited: 26 Sep 2011 11:59
Official URL: http://dx.doi.org/10.1107/S0021889810015980
Additional Information:

SFB 595 B3

Identification Number: doi:10.1107/S0021889810015980
Export:

Optionen (nur für Redakteure)

View Item View Item