A new low-loss dielectric using CaTiO3-modified (Mg0.95Mn0.05)TiO3 ceramics for microwave applications

Cheng-Liang Huang, Jhih Yong Chen, Guan Sian Huang

研究成果: Article

14 引文 (Scopus)

摘要

The microwave dielectric properties of the (1 - x)(Mg0.95Mn0.05)TiO3-xCaTiO3 ceramic system prepared by mixed oxide route have been investigated. The microstructures of the ceramics were characterized by SEM. Ilmenite-structured (Mg0.95Mn0.05)TiO3 and perovskite-structured CaTiO3 were coexisted and the two-phase system was confirmed by the XRD and EDX analysis. The microwave dielectric properties are strongly related to the density and matrix of the specimen. Combination of (Mg0.95Mn0.05)TiO3 and CaTiO3 forms a two-phase system and leads to a near-zero τf. With increasing x, the microwave Q × f decreased and εr increased. A new microwave dielectric material, 0.93(Mg0.95Mn0.05)TiO3-0.07CaTiO3 possesses excellent microwave dielectric properties with a dielectric constant (εr) of ∼22.67, a Q × f of ∼90,700 GHz (where f = 9 GHz, is the resonant frequency) and a τf value of ∼0.8 ppm/°C at 1270 °C for 4 h. It is proposed as a suitable material candidate for applications requiring low microwave dielectric loss.

原文English
頁(從 - 到)48-52
頁數5
期刊Journal of Alloys and Compounds
499
發行號1
DOIs
出版狀態Published - 2010 六月 4

指紋

Dielectric losses
Microwaves
Dielectric properties
Ilmenite
Perovskite
Oxides
perovskite
Energy dispersive spectroscopy
Natural frequencies
Permittivity
Microstructure
Scanning electron microscopy

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

引用此文

@article{ec627631c7474fdba3c55d20b4a16f97,
title = "A new low-loss dielectric using CaTiO3-modified (Mg0.95Mn0.05)TiO3 ceramics for microwave applications",
abstract = "The microwave dielectric properties of the (1 - x)(Mg0.95Mn0.05)TiO3-xCaTiO3 ceramic system prepared by mixed oxide route have been investigated. The microstructures of the ceramics were characterized by SEM. Ilmenite-structured (Mg0.95Mn0.05)TiO3 and perovskite-structured CaTiO3 were coexisted and the two-phase system was confirmed by the XRD and EDX analysis. The microwave dielectric properties are strongly related to the density and matrix of the specimen. Combination of (Mg0.95Mn0.05)TiO3 and CaTiO3 forms a two-phase system and leads to a near-zero τf. With increasing x, the microwave Q × f decreased and εr increased. A new microwave dielectric material, 0.93(Mg0.95Mn0.05)TiO3-0.07CaTiO3 possesses excellent microwave dielectric properties with a dielectric constant (εr) of ∼22.67, a Q × f of ∼90,700 GHz (where f = 9 GHz, is the resonant frequency) and a τf value of ∼0.8 ppm/°C at 1270 °C for 4 h. It is proposed as a suitable material candidate for applications requiring low microwave dielectric loss.",
author = "Cheng-Liang Huang and Chen, {Jhih Yong} and Huang, {Guan Sian}",
year = "2010",
month = "6",
day = "4",
doi = "10.1016/j.jallcom.2010.01.014",
language = "English",
volume = "499",
pages = "48--52",
journal = "Journal of Alloys and Compounds",
issn = "0925-8388",
publisher = "Elsevier BV",
number = "1",

}

A new low-loss dielectric using CaTiO3-modified (Mg0.95Mn0.05)TiO3 ceramics for microwave applications. / Huang, Cheng-Liang; Chen, Jhih Yong; Huang, Guan Sian.

於: Journal of Alloys and Compounds, 卷 499, 編號 1, 04.06.2010, p. 48-52.

研究成果: Article

TY - JOUR

T1 - A new low-loss dielectric using CaTiO3-modified (Mg0.95Mn0.05)TiO3 ceramics for microwave applications

AU - Huang, Cheng-Liang

AU - Chen, Jhih Yong

AU - Huang, Guan Sian

PY - 2010/6/4

Y1 - 2010/6/4

N2 - The microwave dielectric properties of the (1 - x)(Mg0.95Mn0.05)TiO3-xCaTiO3 ceramic system prepared by mixed oxide route have been investigated. The microstructures of the ceramics were characterized by SEM. Ilmenite-structured (Mg0.95Mn0.05)TiO3 and perovskite-structured CaTiO3 were coexisted and the two-phase system was confirmed by the XRD and EDX analysis. The microwave dielectric properties are strongly related to the density and matrix of the specimen. Combination of (Mg0.95Mn0.05)TiO3 and CaTiO3 forms a two-phase system and leads to a near-zero τf. With increasing x, the microwave Q × f decreased and εr increased. A new microwave dielectric material, 0.93(Mg0.95Mn0.05)TiO3-0.07CaTiO3 possesses excellent microwave dielectric properties with a dielectric constant (εr) of ∼22.67, a Q × f of ∼90,700 GHz (where f = 9 GHz, is the resonant frequency) and a τf value of ∼0.8 ppm/°C at 1270 °C for 4 h. It is proposed as a suitable material candidate for applications requiring low microwave dielectric loss.

AB - The microwave dielectric properties of the (1 - x)(Mg0.95Mn0.05)TiO3-xCaTiO3 ceramic system prepared by mixed oxide route have been investigated. The microstructures of the ceramics were characterized by SEM. Ilmenite-structured (Mg0.95Mn0.05)TiO3 and perovskite-structured CaTiO3 were coexisted and the two-phase system was confirmed by the XRD and EDX analysis. The microwave dielectric properties are strongly related to the density and matrix of the specimen. Combination of (Mg0.95Mn0.05)TiO3 and CaTiO3 forms a two-phase system and leads to a near-zero τf. With increasing x, the microwave Q × f decreased and εr increased. A new microwave dielectric material, 0.93(Mg0.95Mn0.05)TiO3-0.07CaTiO3 possesses excellent microwave dielectric properties with a dielectric constant (εr) of ∼22.67, a Q × f of ∼90,700 GHz (where f = 9 GHz, is the resonant frequency) and a τf value of ∼0.8 ppm/°C at 1270 °C for 4 h. It is proposed as a suitable material candidate for applications requiring low microwave dielectric loss.

UR - http://www.scopus.com/inward/record.url?scp=77953134633&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77953134633&partnerID=8YFLogxK

U2 - 10.1016/j.jallcom.2010.01.014

DO - 10.1016/j.jallcom.2010.01.014

M3 - Article

AN - SCOPUS:77953134633

VL - 499

SP - 48

EP - 52

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

SN - 0925-8388

IS - 1

ER -