Microwave dielectric properties of (1-x)CaTiO3-xNd(Mg 1/2Ti1/2)O3 ceramics system

Cheng-Liang Huang, Yuan Bin Chen, Ching Wen Lo

Research output: Contribution to journalArticle

Abstract

The microwave dielectric properties of (1-x)CaTiO3-xNd(Mgi 1/2Ti1/2)O3(0.1≤x≤1.0) have been investigated. The system forms a solid solution throughout the entire compositional range. The dielectric constant decreases from 152 to 27 as x varies from 0.1 to 1.0. In the (1-x)CaTiO3-xNd(Mgi 1/2Ti1/2)O3 system, the microwave dielectric properties can be effectively controlled by varying the x value. A maximum quality factor Qxf = 43000GHz (where f is the resonant frequency) was achieved for samples with x=0.9, although the dielectric properties varied with sintering temperature. The Qxf value of (1-x)CaTiO3-xNd(Mgi 1/2Ti1/2)O3 almost increased up to 1500°C , after which it decreased. At 1400°C, 0.1CaTiO3-0.9Nd(Mg 1/2Ti1/2)O3 ceramics gives a dielectric constant εr of 42 , a Qxf value of 35000 (GHz) and a τf value of -10 (ppm/°C).

Original languageEnglish
Pages (from-to)53-58
Number of pages6
JournalMaterials Research Society Symposium - Proceedings
Volume783
Publication statusPublished - 2003

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Dielectric properties
dielectric properties
Microwaves
ceramics
microwaves
Permittivity
permittivity
resonant frequencies
Q factors
Solid solutions
Natural frequencies
sintering
solid solutions
Sintering
perovskite
Temperature
temperature

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials

Cite this

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title = "Microwave dielectric properties of (1-x)CaTiO3-xNd(Mg 1/2Ti1/2)O3 ceramics system",
abstract = "The microwave dielectric properties of (1-x)CaTiO3-xNd(Mgi 1/2Ti1/2)O3(0.1≤x≤1.0) have been investigated. The system forms a solid solution throughout the entire compositional range. The dielectric constant decreases from 152 to 27 as x varies from 0.1 to 1.0. In the (1-x)CaTiO3-xNd(Mgi 1/2Ti1/2)O3 system, the microwave dielectric properties can be effectively controlled by varying the x value. A maximum quality factor Qxf = 43000GHz (where f is the resonant frequency) was achieved for samples with x=0.9, although the dielectric properties varied with sintering temperature. The Qxf value of (1-x)CaTiO3-xNd(Mgi 1/2Ti1/2)O3 almost increased up to 1500°C , after which it decreased. At 1400°C, 0.1CaTiO3-0.9Nd(Mg 1/2Ti1/2)O3 ceramics gives a dielectric constant εr of 42 , a Qxf value of 35000 (GHz) and a τf value of -10 (ppm/°C).",
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Microwave dielectric properties of (1-x)CaTiO3-xNd(Mg 1/2Ti1/2)O3 ceramics system. / Huang, Cheng-Liang; Chen, Yuan Bin; Lo, Ching Wen.

In: Materials Research Society Symposium - Proceedings, Vol. 783, 2003, p. 53-58.

Research output: Contribution to journalArticle

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AB - The microwave dielectric properties of (1-x)CaTiO3-xNd(Mgi 1/2Ti1/2)O3(0.1≤x≤1.0) have been investigated. The system forms a solid solution throughout the entire compositional range. The dielectric constant decreases from 152 to 27 as x varies from 0.1 to 1.0. In the (1-x)CaTiO3-xNd(Mgi 1/2Ti1/2)O3 system, the microwave dielectric properties can be effectively controlled by varying the x value. A maximum quality factor Qxf = 43000GHz (where f is the resonant frequency) was achieved for samples with x=0.9, although the dielectric properties varied with sintering temperature. The Qxf value of (1-x)CaTiO3-xNd(Mgi 1/2Ti1/2)O3 almost increased up to 1500°C , after which it decreased. At 1400°C, 0.1CaTiO3-0.9Nd(Mg 1/2Ti1/2)O3 ceramics gives a dielectric constant εr of 42 , a Qxf value of 35000 (GHz) and a τf value of -10 (ppm/°C).

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