RT info:eu-repo/semantics/article
T1 Local Piezoelectric Behavior of Potassium Sodium Niobate Prepared by a Facile Synthesis via Water Soluble Precursors
A1 Senes, Nina .
A1 Iacomini, Antonio .
A1 Domingo, Neus .
A1 Enzo, Stefano
A1 Mulas, Gabriele
A1 Cuesta López, Santiago
A1 Garroni, Sebastiano
K1 modified‐pechini method
K1 ead-free piezoceramics
K1 piezoresponse forcemicroscop
K1 potassium sodium niobate
K1 X-ray diffraction
K1 Física
K1 Physics
AB Due to the ever‐increasing restrictions connected to the use of toxic lead‐based materials, the developing of lead‐free piezoceramics has become one of the most urgent tasks. In this context, potassium sodium niobate materials (KNN) have attracted a lot of interest as promising candidates due to their excellent piezo properties. For this reason, many efforts have been addressed to optimize the synthesis process now suffering by several drawbacks including the high volatilization of potassium and sodium at the conventional high temperature treatments and the use of expensive metal precursors. To overcome these issues, a new modified Pechini method to synthesize single phase K0.5Na0.5NbO3 powders, from water soluble metal precursors, is presented. Microstructural and structural parameters are characterized by X‐ray diffraction (XRD). Depending on the amount of citric acid added to the starting reagents, two pure single‐phase K0.5Na0.5NbO3 (2 g citric acid) and K0.3Na0.7NbO3 (0.2 g citric acid), respectively, are obtained with a good crystallinity at a moderate temperature of 500 °C. The piezo responses of the as calcined systems are tested by piezoresponse force microscopy (PFM). K0.5Na0.5NbO3 exhibits a much higher response with respect to the other phase, which relates to the larger crystallinity and to the chemical composition.
PB Wiley
SN 1862-6300
YR 2018
FD 2018-08
LK http://hdl.handle.net/10259/5056
UL http://hdl.handle.net/10259/5056
LA eng
NO H2020-MSCA-IF-2015 grantnumber #70795. panishMinisterio de Economía y Competitividad (MINECO) under projectFIS2015-73932-JIN.  ICN2 acknowledges support from the Severo OchoaProgram  (MINECO,  Grant  No.  SEV-2013-0295
DS Repositorio Institucional de la Universidad de Burgos
RD 23-nov-2024