Investigation of phase boundaries in the system (KxNa1−x)1−yLiy(Nb1−zTaz)O3 using high-throughput experimentation (HTE)
✍ Scribed by Tobias A. Stegk; Henry Mgbemere; Ralf-Peter Herber; Rolf Janssen; Gerold A. Schneider
- Publisher
- Elsevier Science
- Year
- 2009
- Tongue
- English
- Weight
- 943 KB
- Volume
- 29
- Category
- Article
- ISSN
- 0955-2219
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✦ Synopsis
A high-throughput experimental (HTE) approach starting from dry, fine-grained powders was used to synthesize bulk samples in the system (K x Na 1-x ) 1-y Li y (Nb 1-z Ta z )O 3 , a doped variant of the piezoelectric (K 0.5 Na 0.5 )NbO 3 (KNN). Starting from the system (K 0.5 Na 0.5 ) 1-y Li y (Nb 1-z Ta z )O 3 known from the works of Saito et al. an effort was made to establish a higher order phase diagram. Special emphasis was put on expanding the known morphotropic phase boundary that constitutes a region of special interest for electroceramic materials as it features maximum piezoelectric properties. Analyses were performed using a HTE-compatible technique, namely automated powder X-ray diffraction (XRD).