Investigation on dielectric and piezoelectric properties of (1-x)(Na 0.5K0.5)NbO3-xSrTiO3 ceramics

K. Sasanuma; S. Tsukada; J. Kano; S. Kojima; R. Wang; K. Hanada; K. Matsusaki; H. Bando

doi:10.1080/00150190701196237

Investigation on dielectric and piezoelectric properties of (1-x)(Na _0.5K_0.5)NbO₃-xSrTiO₃ ceramics

K. Sasanuma, S. Tsukada, J. Kano, S. Kojima, R. Wang, K. Hanada, K. Matsusaki, H. Bando

Research output: Contribution to journal › Conference article › peer-review

2 Citations (Scopus)

Abstract

Lead-free piezoelectric (1-x)(Na0.5K0.5)NbO3-xSrTiO3 ((1-x)NKN- xST) solid solution has been fabricated around a morphotropic phase boundary (MPB) by Spark-Plasma-Sintering method. The phase diagram around MPB was studied by the dielectric measurement. The piezoelectric constant d33 and electromechanical constant kp measurements shows that MPB is about at x = 0.05. Inverse dielectric constants are well fitted by the extended Curie-Weiss law above the Curie temperature and its fitting result shows that the fitting parameters, C and n values show the maxima for 0.95NKN-0.05ST. We suggest the existence of another phase boundary around x = 0.05. To confirm the another phase boundary, the Raman spectra of 0.975NKN-0.025ST and 0.9NKN-0.1ST samples at the tetragonal phases have been measured and comparison has been done.

Original language	English
Pages (from-to)	106-112
Number of pages	7
Journal	Ferroelectrics
Volume	348
DOIs	https://doi.org/10.1080/00150190701196237
Publication status	Published - 2007
Externally published	Yes
Event	8th Russia/CIS/Baltic/Japan Symposium on Ferroelectricity, RCBJSF-8 - Tsukuba, Japan Duration: May 15 2006 → May 19 2006

Keywords

Dielectric
Diffuse phase transition
Ferroelectrics
Lead-free
MPB
Piezoelectric ceramics

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Access to Document

10.1080/00150190701196237

Cite this

@article{a716cf53ec6d44b6a86041748e53c962,

title = "Investigation on dielectric and piezoelectric properties of (1-x)(Na 0.5K0.5)NbO3-xSrTiO3 ceramics",

abstract = "Lead-free piezoelectric (1-x)(Na0.5K0.5)NbO3-xSrTiO3 ((1-x)NKN- xST) solid solution has been fabricated around a morphotropic phase boundary (MPB) by Spark-Plasma-Sintering method. The phase diagram around MPB was studied by the dielectric measurement. The piezoelectric constant d33 and electromechanical constant kp measurements shows that MPB is about at x = 0.05. Inverse dielectric constants are well fitted by the extended Curie-Weiss law above the Curie temperature and its fitting result shows that the fitting parameters, C and n values show the maxima for 0.95NKN-0.05ST. We suggest the existence of another phase boundary around x = 0.05. To confirm the another phase boundary, the Raman spectra of 0.975NKN-0.025ST and 0.9NKN-0.1ST samples at the tetragonal phases have been measured and comparison has been done.",

keywords = "Dielectric, Diffuse phase transition, Ferroelectrics, Lead-free, MPB, Piezoelectric ceramics",

author = "K. Sasanuma and S. Tsukada and J. Kano and S. Kojima and R. Wang and K. Hanada and K. Matsusaki and H. Bando",

year = "2007",

doi = "10.1080/00150190701196237",

language = "English",

volume = "348",

pages = "106--112",

journal = "Ferroelectrics",

issn = "0015-0193",

publisher = "Taylor and Francis Ltd.",

note = "8th Russia/CIS/Baltic/Japan Symposium on Ferroelectricity, RCBJSF-8 ; Conference date: 15-05-2006 Through 19-05-2006",

}

TY - JOUR

T1 - Investigation on dielectric and piezoelectric properties of (1-x)(Na 0.5K0.5)NbO3-xSrTiO3 ceramics

AU - Sasanuma, K.

AU - Tsukada, S.

AU - Kano, J.

AU - Kojima, S.

AU - Wang, R.

AU - Hanada, K.

AU - Matsusaki, K.

AU - Bando, H.

PY - 2007

Y1 - 2007

N2 - Lead-free piezoelectric (1-x)(Na0.5K0.5)NbO3-xSrTiO3 ((1-x)NKN- xST) solid solution has been fabricated around a morphotropic phase boundary (MPB) by Spark-Plasma-Sintering method. The phase diagram around MPB was studied by the dielectric measurement. The piezoelectric constant d33 and electromechanical constant kp measurements shows that MPB is about at x = 0.05. Inverse dielectric constants are well fitted by the extended Curie-Weiss law above the Curie temperature and its fitting result shows that the fitting parameters, C and n values show the maxima for 0.95NKN-0.05ST. We suggest the existence of another phase boundary around x = 0.05. To confirm the another phase boundary, the Raman spectra of 0.975NKN-0.025ST and 0.9NKN-0.1ST samples at the tetragonal phases have been measured and comparison has been done.

AB - Lead-free piezoelectric (1-x)(Na0.5K0.5)NbO3-xSrTiO3 ((1-x)NKN- xST) solid solution has been fabricated around a morphotropic phase boundary (MPB) by Spark-Plasma-Sintering method. The phase diagram around MPB was studied by the dielectric measurement. The piezoelectric constant d33 and electromechanical constant kp measurements shows that MPB is about at x = 0.05. Inverse dielectric constants are well fitted by the extended Curie-Weiss law above the Curie temperature and its fitting result shows that the fitting parameters, C and n values show the maxima for 0.95NKN-0.05ST. We suggest the existence of another phase boundary around x = 0.05. To confirm the another phase boundary, the Raman spectra of 0.975NKN-0.025ST and 0.9NKN-0.1ST samples at the tetragonal phases have been measured and comparison has been done.

KW - Dielectric

KW - Diffuse phase transition

KW - Ferroelectrics

KW - Lead-free

KW - MPB

KW - Piezoelectric ceramics

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