Local Piezoelectric Behavior of Potassium Sodium Niobate Prepared by a Facile Synthesis via Water Soluble Precursors

Nina Senes; Antonio Iacomini; Neus Domingo; Stefano Enzo; Gabriele Mulas; Santiago Cuesta-Lopez; Sebastiano Garroni

doi:10.1002/pssa.201700921

Local Piezoelectric Behavior of Potassium Sodium Niobate Prepared by a Facile Synthesis via Water Soluble Precursors

Nina Senes, Antonio Iacomini, Neus Domingo, Stefano Enzo, Gabriele Mulas, Santiago Cuesta-Lopez, Sebastiano Garroni

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

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 K_0.5Na_0.5NbO₃ 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 K_0.5Na_0.5NbO₃ (2 g citric acid) and K_0.3Na_0.7NbO₃ (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). K_0.5Na_0.5NbO₃ exhibits a much higher response with respect to the other phase, which relates to the larger crystallinity and to the chemical composition.

Original language	English
Article number	1700921
Journal	Physica Status Solidi (A) Applications and Materials Science
Volume	215
Issue number	16
DOIs	https://doi.org/10.1002/pssa.201700921
State	Published - Aug 22 2018
Externally published	Yes

Funding

This work has been partially funded by the H2020-MSCA-IF-2015 grant number #707954. The activity of N. Senes is supported by a PhD program in a collaborative scheme between the University of Sassari and Cagliari of Italy, which is especially endorsed by Autonomous Regional Administration of Sardinia (RAS). The authors acknowledge the support of the “Servizi di Ateneo per la Ricerca (CeSAR)” of the Sassari University where preliminary XRD experiments, using the Rigaku Smart Lab rotating anode diffractometer, and SEM analyses, were conducted. Financial support was obtained under project from the Spanish Ministerio de Economía y Competitividad (MINECO) under project FIS2015-73932-JIN. ICN2 acknowledges support from the Severo Ochoa Program (MINECO, Grant No. SEV-2013-0295). All the Authors contributed equally to this work. This work has been partially funded by the H2020-MSCA-IF-2015 grant number #707954. The activity of N. Senes is supported by a PhD program in a collaborative scheme between the University of Sassari and Cagliari of Italy, which is especially endorsed by Autonomous Regional Administration of Sardinia (RAS). The authors acknowledge the support of the ?Servizi di Ateneo per la Ricerca (CeSAR)? of the Sassari University where preliminary XRD experiments, using the Rigaku Smart Lab rotating anode diffractometer, and SEM analyses, were conducted. Financial support was obtained under project from the Spanish Ministerio de Econom?a y Competitividad (MINECO) under project FIS2015-73932-JIN. ICN2 acknowledges support from the Severo Ochoa Program (MINECO, Grant No. SEV-2013-0295). All the Authors contributed equally to this work.

Funders	Funder number
Autonomous Regional Administration of Sardinia
H2020-MSCA-IF-2015
Horizon 2020 Framework Programme	707954
Rochester Academy of Science
Ministerio de Economía y Competitividad	FIS2015-73932-JIN, SEV-2013-0295

Keywords

X-ray diffraction
lead-free piezoceramics
modified-pechini method
piezoresponse force microscopy
potassium sodium niobate

Access to Document

10.1002/pssa.201700921

Cite this

@article{282973cd647b4dc0a519112093a38f28,

title = "Local Piezoelectric Behavior of Potassium Sodium Niobate Prepared by a Facile Synthesis via Water Soluble Precursors",

abstract = "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.",

keywords = "X-ray diffraction, lead-free piezoceramics, modified-pechini method, piezoresponse force microscopy, potassium sodium niobate",

author = "Nina Senes and Antonio Iacomini and Neus Domingo and Stefano Enzo and Gabriele Mulas and Santiago Cuesta-Lopez and Sebastiano Garroni",

note = "Publisher Copyright: {\textcopyright} 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim",

year = "2018",

month = aug,

day = "22",

doi = "10.1002/pssa.201700921",

language = "English",

volume = "215",

journal = "Physica Status Solidi (A) Applications and Materials Science",

issn = "1862-6300",

publisher = "wiley",

number = "16",

}

TY - JOUR

T1 - Local Piezoelectric Behavior of Potassium Sodium Niobate Prepared by a Facile Synthesis via Water Soluble Precursors

AU - Senes, Nina

AU - Iacomini, Antonio

AU - Domingo, Neus

AU - Enzo, Stefano

AU - Mulas, Gabriele

AU - Cuesta-Lopez, Santiago

AU - Garroni, Sebastiano

PY - 2018/8/22

Y1 - 2018/8/22

N2 - 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.

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.

KW - X-ray diffraction

KW - lead-free piezoceramics

KW - modified-pechini method

KW - piezoresponse force microscopy

KW - potassium sodium niobate

UR - http://www.scopus.com/inward/record.url?scp=85042417198&partnerID=8YFLogxK

U2 - 10.1002/pssa.201700921

DO - 10.1002/pssa.201700921

M3 - Article

AN - SCOPUS:85042417198

SN - 1862-6300

VL - 215

JO - Physica Status Solidi (A) Applications and Materials Science

JF - Physica Status Solidi (A) Applications and Materials Science

IS - 16

M1 - 1700921

ER -

Local Piezoelectric Behavior of Potassium Sodium Niobate Prepared by a Facile Synthesis via Water Soluble Precursors

Abstract

Funding

Keywords

Access to Document

Other files and links

Fingerprint

Cite this