Browsing NTNU Open by Author "Madaro, Francesco"
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Piezoelectric K0.5Na0.5NbO3 Ceramics Textured Using Needlelike K0.5Na0.5NbO3 Templates
Haugen, Astri Bjørnetun; Olsen, Gerhard Henning; Madaro, Francesco; Morozov, Maxim; Tutuncu, Goknur; Jones, Jacob L.; Grande, Tor; Einarsrud, Mari-Ann (Journal article; Peer reviewed, 2014)Improved performance by texturing has become attractive in the field of lead-free ferroelectrics, but the effect depends heavily on the degree of texture, type of preferred orientation, and whether the material is a rotator ... -
Sintering of sub-micron K0.5Na0.5NbO3 powders fabricated by spray pyrolysis
Haugen, Astri Bjørnetun; Madaro, Francesco; Bjørkeng, Lars Petter; Grande, Tor; Einarsrud, Mari-Ann (Journal article; Peer reviewed, 2015)K0.5Na0.5NbO3 (KNN)-based ceramics are promising lead-free piezoelectrics, but processing of these materials is an ongoing challenge. Here, we present a spray pyrolysis route to highquality KNN-based powders. Fine-grained ... -
Synthesis of textured KxNa1-xNbO3 materials
Madaro, Francesco (Doktoravhandlinger ved NTNU, 1503-8181; 2010:124, Doctoral thesis, 2010)Lead-free piezoelectric and ferroelectric materials have recently gained increasing attention driven by the latest legislation to phase out the state of the art family of materials based on PbZrxTi1-xO3 (PZT). Alkali-niobate ...