Improved figure of merit of (Ba,Sr)TiO3-based ceramics by Sn substitution

Jong Yoon Ha; Liwei Lin; Dae Yong Jeong; Seok Jin Yoon; Ji Won Choi

doi:10.1143/JJAP.48.011402

Improved figure of merit of (Ba,Sr)TiO₃-based ceramics by Sn substitution

Jong Yoon Ha, Liwei Lin, Dae Yong Jeong, Seok Jin Yoon, Ji Won Choi

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

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Abstract

The dielectric properties of (Ba_0.6Sr_0.4)(Ti _1-xSn_x)03 (0 ≤ x ≤ 0.3) ceramics were investigated. Single-phase specimens having a cubic perovskite structure could be obtained. As Sn concentration increased, dielectric loss decreased untill a composition of x = 0.15 and slightly increased as Sn concentration increased further. The diffused phase transition appeared owing to substitution of Sn ions. When Sn was substituted at 0.1 mol in (Ba_0.6Sr_0.4)TiO₃ at 1400°C, the dielectric constant, dielectric loss, tunabllity, Curie point, and figure of merit (FOM) were 1400, 0.0027, 18%, -40°C, and 67, respectively. These compositions show excellent dielectric properties than those of (Ba_0.5Sr_0.5)TiO₃ ferroelectrics, which are limelight materials for tunable devices such as varactors, phase shifters, and frequency agile filters.

Original language	English
Article number	011402
Journal	Japanese Journal of Applied Physics
Volume	48
Issue number	1
DOIs	https://doi.org/10.1143/JJAP.48.011402
State	Published - 20 Jan 2009
Externally published	Yes

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title = "Improved figure of merit of (Ba,Sr)TiO3-based ceramics by Sn substitution",

abstract = "The dielectric properties of (Ba0.6Sr0.4)(Ti 1-xSnx)03 (0 ≤ x ≤ 0.3) ceramics were investigated. Single-phase specimens having a cubic perovskite structure could be obtained. As Sn concentration increased, dielectric loss decreased untill a composition of x = 0.15 and slightly increased as Sn concentration increased further. The diffused phase transition appeared owing to substitution of Sn ions. When Sn was substituted at 0.1 mol in (Ba0.6Sr0.4)TiO3 at 1400°C, the dielectric constant, dielectric loss, tunabllity, Curie point, and figure of merit (FOM) were 1400, 0.0027, 18%, -40°C, and 67, respectively. These compositions show excellent dielectric properties than those of (Ba0.5Sr0.5)TiO3 ferroelectrics, which are limelight materials for tunable devices such as varactors, phase shifters, and frequency agile filters.",

author = "Ha, {Jong Yoon} and Liwei Lin and Jeong, {Dae Yong} and Yoon, {Seok Jin} and Choi, {Ji Won}",

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T1 - Improved figure of merit of (Ba,Sr)TiO3-based ceramics by Sn substitution

AU - Ha, Jong Yoon

AU - Lin, Liwei

AU - Jeong, Dae Yong

AU - Yoon, Seok Jin

AU - Choi, Ji Won

PY - 2009/1/20

Y1 - 2009/1/20

N2 - The dielectric properties of (Ba0.6Sr0.4)(Ti 1-xSnx)03 (0 ≤ x ≤ 0.3) ceramics were investigated. Single-phase specimens having a cubic perovskite structure could be obtained. As Sn concentration increased, dielectric loss decreased untill a composition of x = 0.15 and slightly increased as Sn concentration increased further. The diffused phase transition appeared owing to substitution of Sn ions. When Sn was substituted at 0.1 mol in (Ba0.6Sr0.4)TiO3 at 1400°C, the dielectric constant, dielectric loss, tunabllity, Curie point, and figure of merit (FOM) were 1400, 0.0027, 18%, -40°C, and 67, respectively. These compositions show excellent dielectric properties than those of (Ba0.5Sr0.5)TiO3 ferroelectrics, which are limelight materials for tunable devices such as varactors, phase shifters, and frequency agile filters.

AB - The dielectric properties of (Ba0.6Sr0.4)(Ti 1-xSnx)03 (0 ≤ x ≤ 0.3) ceramics were investigated. Single-phase specimens having a cubic perovskite structure could be obtained. As Sn concentration increased, dielectric loss decreased untill a composition of x = 0.15 and slightly increased as Sn concentration increased further. The diffused phase transition appeared owing to substitution of Sn ions. When Sn was substituted at 0.1 mol in (Ba0.6Sr0.4)TiO3 at 1400°C, the dielectric constant, dielectric loss, tunabllity, Curie point, and figure of merit (FOM) were 1400, 0.0027, 18%, -40°C, and 67, respectively. These compositions show excellent dielectric properties than those of (Ba0.5Sr0.5)TiO3 ferroelectrics, which are limelight materials for tunable devices such as varactors, phase shifters, and frequency agile filters.

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JO - Japanese Journal of Applied Physics

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Improved figure of merit of (Ba,Sr)TiO₃-based ceramics by Sn substitution

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