Journal article
Temperature-Dependent Phase Transitions in the Lead-Free Piezoceramics (1 – x – y)(Bi1/2Na1/2)TiO3–xBaTiO3–y(K0.5Na0.5)NbO3 Observed by in situ Transmission Electron Microscopy and Dielectric Measurements
Lead-free piezoelectric (1 – x – y)(Bi1/2Na1/2)TiO3–xBaTiO3–y(K0.5Na0.5)NbO3 (BNT–BT–KNN) ceramics were examined in situ under increasing temperature in the transmission electron microscope. Changing superstructure reflections indicate a transition from rhombohedral to tetragonal to cubic phase with broad coexistence regions.
The additional evolution of the microstructure in combination with dielectric measurements leads to a model of two relaxor-type phase evolutions with temperature.
Language: | English |
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Year: | 2013 |
Pages: | 3312-3324 |
ISSN: | 00027820 and 15512916 |
Types: | Journal article |
DOI: | 10.1111/jace.12493 |
ORCIDs: | Kling, Jens |