Microwave dielectric properties of Ca[(Li1/3Nb2/3)1-xMx]O3-δ (M = Sn, Ti) ceramics

Ji Won Choi; Chong Yun Kang; Seok Jin Yoon; Hyun Jai Kim; Hyung Jin Jung; Ki Hyun Yoon

doi:10.1557/JMR.1999.0483

Microwave dielectric properties of Ca[(Li_1/3Nb_2/3)_1-xM_x]O_3-δ (M = Sn, Ti) ceramics

Ji Won Choi, Chong Yun Kang, Seok Jin Yoon, Hyun Jai Kim, Hyung Jin Jung, Ki Hyun Yoon

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

68 Citations (Scopus)

Abstract

The microwave dielectric properties of Ca[(Li_1/3Nb_2/3)_1-xM_x]O_3-δ(M = Sn, Ti, 0≤x≤0.5) ceramics were investigated. In general, the ceramics prepared were multiphase materials. However, single-phase specimens having orthorhombic perovskite structure similar to CaTiO₃ could be obtained in the vicinity of Sn = 0.2 to 0.3, and Ti = 0.2. As Sn concentration increased, the dielectric constant (ε_r) decreased and the quality factor (Q) significantly increased within the limited Sn concentration. As Ti concentration increased, the dielectric constant (ε_r) increased, the quality factor (Q) decreased, and the temperature coefficient of resonant frequency (τ_f) changed from a negative to positive value. The temperature coefficient of resonant frequency of 0 ppm/°C was realized at Ti = 0.2. The Q·f_o value and ε_r for this composition were found to be 26100 GHz and 38.6, respectively.

Original language	English
Pages (from-to)	3567-3570
Number of pages	4
Journal	Journal of Materials Research
Volume	14
Issue number	9
DOIs	https://doi.org/10.1557/JMR.1999.0483
Publication status	Published - 1999 Sept
Externally published	Yes

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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title = "Microwave dielectric properties of Ca[(Li1/3Nb2/3)1-xMx]O3-δ (M = Sn, Ti) ceramics",

abstract = "The microwave dielectric properties of Ca[(Li1/3Nb2/3)1-xMx]O3-δ(M = Sn, Ti, 0≤x≤0.5) ceramics were investigated. In general, the ceramics prepared were multiphase materials. However, single-phase specimens having orthorhombic perovskite structure similar to CaTiO3 could be obtained in the vicinity of Sn = 0.2 to 0.3, and Ti = 0.2. As Sn concentration increased, the dielectric constant (εr) decreased and the quality factor (Q) significantly increased within the limited Sn concentration. As Ti concentration increased, the dielectric constant (εr) increased, the quality factor (Q) decreased, and the temperature coefficient of resonant frequency (τf) changed from a negative to positive value. The temperature coefficient of resonant frequency of 0 ppm/°C was realized at Ti = 0.2. The Q·fo value and εr for this composition were found to be 26100 GHz and 38.6, respectively.",

author = "Choi, {Ji Won} and Kang, {Chong Yun} and Yoon, {Seok Jin} and Kim, {Hyun Jai} and Jung, {Hyung Jin} and Yoon, {Ki Hyun}",

year = "1999",

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doi = "10.1557/JMR.1999.0483",

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AU - Choi, Ji Won

AU - Kang, Chong Yun

AU - Yoon, Seok Jin

AU - Kim, Hyun Jai

AU - Jung, Hyung Jin

AU - Yoon, Ki Hyun

PY - 1999/9

Y1 - 1999/9

N2 - The microwave dielectric properties of Ca[(Li1/3Nb2/3)1-xMx]O3-δ(M = Sn, Ti, 0≤x≤0.5) ceramics were investigated. In general, the ceramics prepared were multiphase materials. However, single-phase specimens having orthorhombic perovskite structure similar to CaTiO3 could be obtained in the vicinity of Sn = 0.2 to 0.3, and Ti = 0.2. As Sn concentration increased, the dielectric constant (εr) decreased and the quality factor (Q) significantly increased within the limited Sn concentration. As Ti concentration increased, the dielectric constant (εr) increased, the quality factor (Q) decreased, and the temperature coefficient of resonant frequency (τf) changed from a negative to positive value. The temperature coefficient of resonant frequency of 0 ppm/°C was realized at Ti = 0.2. The Q·fo value and εr for this composition were found to be 26100 GHz and 38.6, respectively.

AB - The microwave dielectric properties of Ca[(Li1/3Nb2/3)1-xMx]O3-δ(M = Sn, Ti, 0≤x≤0.5) ceramics were investigated. In general, the ceramics prepared were multiphase materials. However, single-phase specimens having orthorhombic perovskite structure similar to CaTiO3 could be obtained in the vicinity of Sn = 0.2 to 0.3, and Ti = 0.2. As Sn concentration increased, the dielectric constant (εr) decreased and the quality factor (Q) significantly increased within the limited Sn concentration. As Ti concentration increased, the dielectric constant (εr) increased, the quality factor (Q) decreased, and the temperature coefficient of resonant frequency (τf) changed from a negative to positive value. The temperature coefficient of resonant frequency of 0 ppm/°C was realized at Ti = 0.2. The Q·fo value and εr for this composition were found to be 26100 GHz and 38.6, respectively.

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Microwave dielectric properties of Ca[(Li_1/3Nb_2/3)_1-xM_x]O_3-δ (M = Sn, Ti) ceramics

Abstract

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