Electrical properties of Na0.5Bi2.5Ta 2O9-Sr1-xBi2+yTa2O 9 solid solution ceramics

H. Takeda; R. Aoyagi; S. Okamura; T. Shiosaki

Electrical properties of Na_0.5Bi_2.5Ta ₂O₉-Sr_1-xBi_2+yTa₂O ₉ solid solution ceramics

H. Takeda, R. Aoyagi, S. Okamura, T. Shiosaki

Department of Applied Physics

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

Abstract

The (1-x)[Na_0.5Bi_2.5Ta₂O₉] - x[Sr_0.8Bi_2.15Ta₂O₉] (0≤x≤1) solid solution ceramics were synthesized using a conventional sintering method. All the ceramic samples consisted of a single phase with an orthorhombic symmetry A2₁am and showed well-developed polarization-electric field hysteresis loops. The temperature dependence of the dielectric constant revealed that the Curie temperature T_c linearly decreased with an increase in x from 780°C(x=0) to 4100°C(x=1.0). The maximum electromechanical coupling factor (k_p = 8.6 %) and mechanical quality factor (Q _m = 7000) with a radial-extensional mode were obtained for the x=0.75 samples.

Original language	English
Pages (from-to)	1241-1244
Number of pages	4
Journal	Key Engineering Materials
Volume	264-268
Issue number	II
Publication status	Published - 2004
Event	Proceedings of the 8th Conference and Exhibition of the European Ceramic Society - Istanbul, Turkey Duration: 29 Jun 2003 → 3 Jul 2003

Keywords

Bismuth layered structured ferroelectrics
Ferroelectricity
Piezoelectricity
Solid solution

Cite this

@article{b581e5d3f2f24f91bacdaaa6cdbe62b2,

title = "Electrical properties of Na0.5Bi2.5Ta 2O9-Sr1-xBi2+yTa2O 9 solid solution ceramics",

abstract = "The (1-x)[Na0.5Bi2.5Ta2O9] - x[Sr0.8Bi2.15Ta2O9] (0≤x≤1) solid solution ceramics were synthesized using a conventional sintering method. All the ceramic samples consisted of a single phase with an orthorhombic symmetry A21am and showed well-developed polarization-electric field hysteresis loops. The temperature dependence of the dielectric constant revealed that the Curie temperature Tc linearly decreased with an increase in x from 780°C(x=0) to 4100°C(x=1.0). The maximum electromechanical coupling factor (kp = 8.6 %) and mechanical quality factor (Q m = 7000) with a radial-extensional mode were obtained for the x=0.75 samples.",

keywords = "Bismuth layered structured ferroelectrics, Ferroelectricity, Piezoelectricity, Solid solution",

author = "H. Takeda and R. Aoyagi and S. Okamura and T. Shiosaki",

year = "2004",

language = "English",

volume = "264-268",

pages = "1241--1244",

journal = "Key Engineering Materials",

issn = "1013-9826",

publisher = "Trans Tech Publications Ltd",

number = "II",

note = "Proceedings of the 8th Conference and Exhibition of the European Ceramic Society ; Conference date: 29-06-2003 Through 03-07-2003",

}

TY - JOUR

T1 - Electrical properties of Na0.5Bi2.5Ta 2O9-Sr1-xBi2+yTa2O 9 solid solution ceramics

AU - Takeda, H.

AU - Aoyagi, R.

AU - Okamura, S.

AU - Shiosaki, T.

PY - 2004

Y1 - 2004

N2 - The (1-x)[Na0.5Bi2.5Ta2O9] - x[Sr0.8Bi2.15Ta2O9] (0≤x≤1) solid solution ceramics were synthesized using a conventional sintering method. All the ceramic samples consisted of a single phase with an orthorhombic symmetry A21am and showed well-developed polarization-electric field hysteresis loops. The temperature dependence of the dielectric constant revealed that the Curie temperature Tc linearly decreased with an increase in x from 780°C(x=0) to 4100°C(x=1.0). The maximum electromechanical coupling factor (kp = 8.6 %) and mechanical quality factor (Q m = 7000) with a radial-extensional mode were obtained for the x=0.75 samples.

AB - The (1-x)[Na0.5Bi2.5Ta2O9] - x[Sr0.8Bi2.15Ta2O9] (0≤x≤1) solid solution ceramics were synthesized using a conventional sintering method. All the ceramic samples consisted of a single phase with an orthorhombic symmetry A21am and showed well-developed polarization-electric field hysteresis loops. The temperature dependence of the dielectric constant revealed that the Curie temperature Tc linearly decreased with an increase in x from 780°C(x=0) to 4100°C(x=1.0). The maximum electromechanical coupling factor (kp = 8.6 %) and mechanical quality factor (Q m = 7000) with a radial-extensional mode were obtained for the x=0.75 samples.

KW - Bismuth layered structured ferroelectrics

KW - Ferroelectricity

KW - Piezoelectricity

KW - Solid solution

UR - http://www.scopus.com/inward/record.url?scp=8744253458&partnerID=8YFLogxK

M3 - Conference article

AN - SCOPUS:8744253458

SN - 1013-9826

VL - 264-268

SP - 1241

EP - 1244

JO - Key Engineering Materials

JF - Key Engineering Materials

IS - II

T2 - Proceedings of the 8th Conference and Exhibition of the European Ceramic Society

Y2 - 29 June 2003 through 3 July 2003

ER -

Electrical properties of Na_0.5Bi_2.5Ta ₂O₉-Sr_1-xBi_2+yTa₂O ₉ solid solution ceramics

Abstract

Keywords

Other files and links

Fingerprint

Cite this