(1-x)BaTiO3-x(Na0.5K0.5)NbO3 ceramics for multilayer ceramic capacitors

Chang Hak Choi; Cheol Woo Ahn; Sahn Nahm; Jung Oh Hong; Jung Soo Lee

doi:10.1063/1.2717559

(1-x)BaTiO₃-x(Na_0.5K_0.5)NbO₃ ceramics for multilayer ceramic capacitors

Chang Hak Choi, Cheol Woo Ahn, Sahn Nahm, Jung Oh Hong, Jung Soo Lee

Department of Materials Science and Engineering

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

28 Citations (Scopus)

Abstract

(1-x)BaTiO₃-x(Na_0.5K_0.5)NbO₃ ceramics with 0.0 ≤x≤0.08 formed a homogeneous solid solution. As (Na _0.5K_0.5)NbO₃ (NKN) was added, the Curie temperature of the BaTiO₃ (BT) ceramics decreased and specimens became a relaxor as x exceeded 0.04. The grain size of the BT ceramics decreased with increasing NKN. The average grain size was approximately 0.4 μm at x =0.06. The dielectric constant (ε_r) of the specimen increased with increasing NKN and high ε_r of 7402 with low dielectric loss of < 1.0% was observed for the 0.94BT-0.06NKN ceramic. Therefore, the 0.94BT-0.06NKN ceramic is proposed as a promising candidate material for thin multilayer ceramic capacitors with high capacitance.

Original language	English
Article number	132905
Journal	Applied Physics Letters
Volume	90
Issue number	13
DOIs	https://doi.org/10.1063/1.2717559
Publication status	Published - 2007

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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title = "(1-x)BaTiO3-x(Na0.5K0.5)NbO3 ceramics for multilayer ceramic capacitors",

abstract = "(1-x)BaTiO3-x(Na0.5K0.5)NbO3 ceramics with 0.0 ≤x≤0.08 formed a homogeneous solid solution. As (Na 0.5K0.5)NbO3 (NKN) was added, the Curie temperature of the BaTiO3 (BT) ceramics decreased and specimens became a relaxor as x exceeded 0.04. The grain size of the BT ceramics decreased with increasing NKN. The average grain size was approximately 0.4 μm at x =0.06. The dielectric constant (εr) of the specimen increased with increasing NKN and high εr of 7402 with low dielectric loss of < 1.0% was observed for the 0.94BT-0.06NKN ceramic. Therefore, the 0.94BT-0.06NKN ceramic is proposed as a promising candidate material for thin multilayer ceramic capacitors with high capacitance.",

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T1 - (1-x)BaTiO3-x(Na0.5K0.5)NbO3 ceramics for multilayer ceramic capacitors

AU - Choi, Chang Hak

AU - Ahn, Cheol Woo

AU - Nahm, Sahn

AU - Hong, Jung Oh

AU - Lee, Jung Soo

PY - 2007

Y1 - 2007

N2 - (1-x)BaTiO3-x(Na0.5K0.5)NbO3 ceramics with 0.0 ≤x≤0.08 formed a homogeneous solid solution. As (Na 0.5K0.5)NbO3 (NKN) was added, the Curie temperature of the BaTiO3 (BT) ceramics decreased and specimens became a relaxor as x exceeded 0.04. The grain size of the BT ceramics decreased with increasing NKN. The average grain size was approximately 0.4 μm at x =0.06. The dielectric constant (εr) of the specimen increased with increasing NKN and high εr of 7402 with low dielectric loss of < 1.0% was observed for the 0.94BT-0.06NKN ceramic. Therefore, the 0.94BT-0.06NKN ceramic is proposed as a promising candidate material for thin multilayer ceramic capacitors with high capacitance.

AB - (1-x)BaTiO3-x(Na0.5K0.5)NbO3 ceramics with 0.0 ≤x≤0.08 formed a homogeneous solid solution. As (Na 0.5K0.5)NbO3 (NKN) was added, the Curie temperature of the BaTiO3 (BT) ceramics decreased and specimens became a relaxor as x exceeded 0.04. The grain size of the BT ceramics decreased with increasing NKN. The average grain size was approximately 0.4 μm at x =0.06. The dielectric constant (εr) of the specimen increased with increasing NKN and high εr of 7402 with low dielectric loss of < 1.0% was observed for the 0.94BT-0.06NKN ceramic. Therefore, the 0.94BT-0.06NKN ceramic is proposed as a promising candidate material for thin multilayer ceramic capacitors with high capacitance.

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(1-x)BaTiO₃-x(Na_0.5K_0.5)NbO₃ ceramics for multilayer ceramic capacitors

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