Microstructure and piezoelectric properties of 0.95(Na 0.5K 0.5)NbO 3-0.05BaTiO 3 ceramics

Hwi Yeol Park; Cheol Woo Ahn; Hyun Cheol Song; Jong Heun Lee; Sahn Nahm; Kenji Uchino; Hyeung Gyu Lee; Hwack Joo Lee

doi:10.1063/1.2335816

Microstructure and piezoelectric properties of 0.95(Na _0.5K _0.5)NbO ₃-0.05BaTiO ₃ ceramics

Hwi Yeol Park, Cheol Woo Ahn, Hyun Cheol Song, Jong Heun Lee, Sahn Nahm, Kenji Uchino, Hyeung Gyu Lee, Hwack Joo Lee

Materials Research Institute (MRI)

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

265 Scopus citations

Abstract

For 0.95(Na _0.5K _0.5)NbO ₃-0.05BaTiO ₃ (0.95NKN-0.05BT) ceramics sintered at 1040-1075°C, abnormal grain growth occurred but the grain size decreased when the sintering temperature exceeded 1075°C. The dielectric constant (∈ ₃ ^T/∈ ₃), electromechanical coupling factor (k _p), and piezoelectric constant (d ₃₃) were considerably increased with increasing relative density and grain size. Evaporation of Na ₂O deteriorated the piezoelectric properties by decreasing the resistivity. To minimize Na ₂O evaporation, specimens were muffled with 0.95NKN-0.05BT powders during the sintering. Improved piezoelectric properties of d ₃₃=225 pC/N, k _p=36%, and ∈ ₃ ^T∈ ₃ = 1058 were obtained for specimen sintered at 1060°C for 2h with muffling.

Original language	English (US)
Article number	062906
Journal	Applied Physics Letters
Volume	89
Issue number	6
DOIs	https://doi.org/10.1063/1.2335816
State	Published - 2006

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

Access to Document

10.1063/1.2335816

Cite this

@article{cfc120d3092c4547b52904356613af4f,

title = "Microstructure and piezoelectric properties of 0.95(Na 0.5K 0.5)NbO 3-0.05BaTiO 3 ceramics",

abstract = "For 0.95(Na 0.5K 0.5)NbO 3-0.05BaTiO 3 (0.95NKN-0.05BT) ceramics sintered at 1040-1075°C, abnormal grain growth occurred but the grain size decreased when the sintering temperature exceeded 1075°C. The dielectric constant (∈ 3 T/∈ 3), electromechanical coupling factor (k p), and piezoelectric constant (d 33) were considerably increased with increasing relative density and grain size. Evaporation of Na 2O deteriorated the piezoelectric properties by decreasing the resistivity. To minimize Na 2O evaporation, specimens were muffled with 0.95NKN-0.05BT powders during the sintering. Improved piezoelectric properties of d 33=225 pC/N, k p=36%, and ∈ 3 T∈ 3 = 1058 were obtained for specimen sintered at 1060°C for 2h with muffling.",

author = "Park, {Hwi Yeol} and Ahn, {Cheol Woo} and Song, {Hyun Cheol} and Lee, {Jong Heun} and Sahn Nahm and Kenji Uchino and Lee, {Hyeung Gyu} and Lee, {Hwack Joo}",

year = "2006",

doi = "10.1063/1.2335816",

language = "English (US)",

volume = "89",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

number = "6",

}

TY - JOUR

T1 - Microstructure and piezoelectric properties of 0.95(Na 0.5K 0.5)NbO 3-0.05BaTiO 3 ceramics

AU - Park, Hwi Yeol

AU - Ahn, Cheol Woo

AU - Song, Hyun Cheol

AU - Lee, Jong Heun

AU - Nahm, Sahn

AU - Uchino, Kenji

AU - Lee, Hyeung Gyu

AU - Lee, Hwack Joo

PY - 2006

Y1 - 2006

N2 - For 0.95(Na 0.5K 0.5)NbO 3-0.05BaTiO 3 (0.95NKN-0.05BT) ceramics sintered at 1040-1075°C, abnormal grain growth occurred but the grain size decreased when the sintering temperature exceeded 1075°C. The dielectric constant (∈ 3 T/∈ 3), electromechanical coupling factor (k p), and piezoelectric constant (d 33) were considerably increased with increasing relative density and grain size. Evaporation of Na 2O deteriorated the piezoelectric properties by decreasing the resistivity. To minimize Na 2O evaporation, specimens were muffled with 0.95NKN-0.05BT powders during the sintering. Improved piezoelectric properties of d 33=225 pC/N, k p=36%, and ∈ 3 T∈ 3 = 1058 were obtained for specimen sintered at 1060°C for 2h with muffling.

AB - For 0.95(Na 0.5K 0.5)NbO 3-0.05BaTiO 3 (0.95NKN-0.05BT) ceramics sintered at 1040-1075°C, abnormal grain growth occurred but the grain size decreased when the sintering temperature exceeded 1075°C. The dielectric constant (∈ 3 T/∈ 3), electromechanical coupling factor (k p), and piezoelectric constant (d 33) were considerably increased with increasing relative density and grain size. Evaporation of Na 2O deteriorated the piezoelectric properties by decreasing the resistivity. To minimize Na 2O evaporation, specimens were muffled with 0.95NKN-0.05BT powders during the sintering. Improved piezoelectric properties of d 33=225 pC/N, k p=36%, and ∈ 3 T∈ 3 = 1058 were obtained for specimen sintered at 1060°C for 2h with muffling.

UR - http://www.scopus.com/inward/record.url?scp=33747090654&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33747090654&partnerID=8YFLogxK

U2 - 10.1063/1.2335816

DO - 10.1063/1.2335816

M3 - Article

AN - SCOPUS:33747090654

SN - 0003-6951

VL - 89

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 6

M1 - 062906

ER -

Microstructure and piezoelectric properties of 0.95(Na _0.5K _0.5)NbO ₃-0.05BaTiO ₃ ceramics

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this