2026-10-21T17:32:54Zhttps://riubu.ubu.es/oai/requestoai:riubu.ubu.es:10259/50562024-07-24T11:42:11Zcom_10259_9476com_10259.4_106com_10259_2604col_10259_9477
Repositorio Institucional de la Universidad de Burgos
author
Senes, Nina .
author
Iacomini, Antonio .
author
Domingo, Neus .
author
Enzo, Stefano
author
Mulas, Gabriele
author
Cuesta López, Santiago
author
Garroni, Sebastiano
2019-02-05T10:06:56Z
2018-08
1862-6300
http://hdl.handle.net/10259/5056
10.1002/pssa.201700921
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.
eng
modified‐pechini method
ead-free piezoceramics
piezoresponse forcemicroscop
potassium sodium niobate
X-ray diffraction
Local Piezoelectric Behavior of Potassium Sodium Niobate Prepared by a Facile Synthesis via Water Soluble Precursors
info:eu-repo/semantics/article
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URL
https://riubu.ubu.es/bitstream/10259/5056/3/PSSA-JOURNAL-S-17-01090.pdf
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https://riubu.ubu.es/bitstream/10259/5056/4/PSSA-JOURNAL-S-17-01090.pdf.txt
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PSSA-JOURNAL-S-17-01090.pdf.txt