Structural and electrical properties of (Na0.5K 0.5)NbO3 ceramics with addition of BiTiO3

Tae Ho Lee; Dae Young Kim; Seo Hyeon Jo; Gwang Ho Jeong; Sung Gap Lee

doi:10.5370/KIEE.2011.60.11.2093

Structural and electrical properties of (Na_0.5K _0.5)NbO₃ ceramics with addition of BiTiO₃

Tae Ho Lee, Dae Young Kim, Seo Hyeon Jo, Gwang Ho Jeong, Sung Gap Lee

Materials Engineering

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

3 Scopus citations

Abstract

In this study, lead-free (Na_0.5K_0.5)NbO ₃-BiTiO₃ ceramics were fabricated by a conventional mixed oxide method. Structural and electrical properties of lead-free (Na _0.5K_0.5)NbO₃ ceramics with the variation of BiTiO₃ were investigated. The results of X-ray diffraction analysis showed a typical polycrystalline perovskite structure without presence of the second phase in all specimens. Sintered density increased with an increasing of BTO and the specimen added with 0.07 mol% of BiTiO₃ showed the maximum value of 97.8%. Average grain size decreased and densification increased with an increasing of BiTiO₃ contents. The electromechanical coupling factor of the0.01 mol% BiTiO₃ doped NKN specimens was 0.32. Dielectric constant, dielectric loss and Curie temperature of the 0.07 mol% BiTiO₃ doped NKN specimens were 1185, 0.145% and 400°C, respectively.

Original language	English
Pages (from-to)	2093-2096
Number of pages	4
Journal	Transactions of the Korean Institute of Electrical Engineers
Volume	60
Issue number	11
DOIs	https://doi.org/10.5370/KIEE.2011.60.11.2093
State	Published - Nov 2011

Keywords

BTO
Dielectric constant
Electrical properties
NKN
Piezoelectric

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10.5370/KIEE.2011.60.11.2093

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@article{eae77d44171c42c5acc15ba1c66504ed,

title = "Structural and electrical properties of (Na0.5K 0.5)NbO3 ceramics with addition of BiTiO3",

abstract = "In this study, lead-free (Na0.5K0.5)NbO 3-BiTiO3 ceramics were fabricated by a conventional mixed oxide method. Structural and electrical properties of lead-free (Na 0.5K0.5)NbO3 ceramics with the variation of BiTiO3 were investigated. The results of X-ray diffraction analysis showed a typical polycrystalline perovskite structure without presence of the second phase in all specimens. Sintered density increased with an increasing of BTO and the specimen added with 0.07 mol\% of BiTiO3 showed the maximum value of 97.8\%. Average grain size decreased and densification increased with an increasing of BiTiO3 contents. The electromechanical coupling factor of the0.01 mol\% BiTiO3 doped NKN specimens was 0.32. Dielectric constant, dielectric loss and Curie temperature of the 0.07 mol\% BiTiO3 doped NKN specimens were 1185, 0.145\% and 400°C, respectively.",

keywords = "BTO, Dielectric constant, Electrical properties, NKN, Piezoelectric",

author = "Lee, \{Tae Ho\} and Kim, \{Dae Young\} and Jo, \{Seo Hyeon\} and Jeong, \{Gwang Ho\} and Lee, \{Sung Gap\}",

year = "2011",

month = nov,

doi = "10.5370/KIEE.2011.60.11.2093",

language = "English",

volume = "60",

pages = "2093--2096",

journal = "Transactions of the Korean Institute of Electrical Engineers",

issn = "1975-8359",

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TY - JOUR

T1 - Structural and electrical properties of (Na0.5K 0.5)NbO3 ceramics with addition of BiTiO3

AU - Lee, Tae Ho

AU - Kim, Dae Young

AU - Jo, Seo Hyeon

AU - Jeong, Gwang Ho

AU - Lee, Sung Gap

PY - 2011/11

Y1 - 2011/11

N2 - In this study, lead-free (Na0.5K0.5)NbO 3-BiTiO3 ceramics were fabricated by a conventional mixed oxide method. Structural and electrical properties of lead-free (Na 0.5K0.5)NbO3 ceramics with the variation of BiTiO3 were investigated. The results of X-ray diffraction analysis showed a typical polycrystalline perovskite structure without presence of the second phase in all specimens. Sintered density increased with an increasing of BTO and the specimen added with 0.07 mol% of BiTiO3 showed the maximum value of 97.8%. Average grain size decreased and densification increased with an increasing of BiTiO3 contents. The electromechanical coupling factor of the0.01 mol% BiTiO3 doped NKN specimens was 0.32. Dielectric constant, dielectric loss and Curie temperature of the 0.07 mol% BiTiO3 doped NKN specimens were 1185, 0.145% and 400°C, respectively.

AB - In this study, lead-free (Na0.5K0.5)NbO 3-BiTiO3 ceramics were fabricated by a conventional mixed oxide method. Structural and electrical properties of lead-free (Na 0.5K0.5)NbO3 ceramics with the variation of BiTiO3 were investigated. The results of X-ray diffraction analysis showed a typical polycrystalline perovskite structure without presence of the second phase in all specimens. Sintered density increased with an increasing of BTO and the specimen added with 0.07 mol% of BiTiO3 showed the maximum value of 97.8%. Average grain size decreased and densification increased with an increasing of BiTiO3 contents. The electromechanical coupling factor of the0.01 mol% BiTiO3 doped NKN specimens was 0.32. Dielectric constant, dielectric loss and Curie temperature of the 0.07 mol% BiTiO3 doped NKN specimens were 1185, 0.145% and 400°C, respectively.

KW - BTO

KW - Dielectric constant

KW - Electrical properties

KW - NKN

KW - Piezoelectric

UR - https://www.scopus.com/pages/publications/82255160712

U2 - 10.5370/KIEE.2011.60.11.2093

DO - 10.5370/KIEE.2011.60.11.2093

M3 - Article

AN - SCOPUS:82255160712

SN - 1975-8359

VL - 60

SP - 2093

EP - 2096

JO - Transactions of the Korean Institute of Electrical Engineers

JF - Transactions of the Korean Institute of Electrical Engineers

IS - 11

ER -

Structural and electrical properties of (Na_0.5K _0.5)NbO₃ ceramics with addition of BiTiO₃

Abstract

Keywords

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