Effect of Mg doping on microwave dielectric properties of translucent polycrystalline alumina ceramic

Huijun Wang; Wei Li; Carl Ternström; Huixing Lin; Jianlin Shi

doi:10.1016/j.ceramint.2012.07.110

Effect of Mg doping on microwave dielectric properties of translucent polycrystalline alumina ceramic

Huijun Wang
, Wei Li^*
, Carl Ternström
, Huixing Lin
, Jianlin Shi

^*Corresponding author for this work

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

19 Scopus citations

Abstract

In this paper, the microstructure and microwave dielectric properties of translucent polycrystalline alumina (PCA) with various addition amounts of MgO were investigated. Translucent PCA was obtained by adding ∼500-2000 ppm MgO. Compared with the undoped PCA, the translucent PCA doped with 500 ppm MgO showed a higher density and a much higher Q×f value. As the MgO content further increased, the dielectric constants (ε_r) of the translucent PCA samples showed no significant change, while the Q×f values decreased rapidly. The increased amount of impurities (MgO or spinel) was believed to be the main reason for the lower Q×f values.

Original language	English
Pages (from-to)	1583-1586
Number of pages	4
Journal	Ceramics International
Volume	39
Issue number	2
DOIs	https://doi.org/10.1016/j.ceramint.2012.07.110
State	Published - Mar 2013
Externally published	Yes

Keywords

B. Grain size
C. Dielectric properties
D. AlO
MgO

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10.1016/j.ceramint.2012.07.110

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title = "Effect of Mg doping on microwave dielectric properties of translucent polycrystalline alumina ceramic",

abstract = "In this paper, the microstructure and microwave dielectric properties of translucent polycrystalline alumina (PCA) with various addition amounts of MgO were investigated. Translucent PCA was obtained by adding ∼500-2000 ppm MgO. Compared with the undoped PCA, the translucent PCA doped with 500 ppm MgO showed a higher density and a much higher Q×f value. As the MgO content further increased, the dielectric constants (εr) of the translucent PCA samples showed no significant change, while the Q×f values decreased rapidly. The increased amount of impurities (MgO or spinel) was believed to be the main reason for the lower Q×f values.",

keywords = "B. Grain size, C. Dielectric properties, D. AlO, MgO",

author = "Huijun Wang and Wei Li and Carl Ternstr{\"o}m and Huixing Lin and Jianlin Shi",

year = "2013",

month = mar,

doi = "10.1016/j.ceramint.2012.07.110",

language = "英语",

volume = "39",

pages = "1583--1586",

journal = "Ceramics International",

issn = "0272-8842",

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}

TY - JOUR

T1 - Effect of Mg doping on microwave dielectric properties of translucent polycrystalline alumina ceramic

AU - Wang, Huijun

AU - Li, Wei

AU - Ternström, Carl

AU - Lin, Huixing

AU - Shi, Jianlin

PY - 2013/3

Y1 - 2013/3

N2 - In this paper, the microstructure and microwave dielectric properties of translucent polycrystalline alumina (PCA) with various addition amounts of MgO were investigated. Translucent PCA was obtained by adding ∼500-2000 ppm MgO. Compared with the undoped PCA, the translucent PCA doped with 500 ppm MgO showed a higher density and a much higher Q×f value. As the MgO content further increased, the dielectric constants (εr) of the translucent PCA samples showed no significant change, while the Q×f values decreased rapidly. The increased amount of impurities (MgO or spinel) was believed to be the main reason for the lower Q×f values.

AB - In this paper, the microstructure and microwave dielectric properties of translucent polycrystalline alumina (PCA) with various addition amounts of MgO were investigated. Translucent PCA was obtained by adding ∼500-2000 ppm MgO. Compared with the undoped PCA, the translucent PCA doped with 500 ppm MgO showed a higher density and a much higher Q×f value. As the MgO content further increased, the dielectric constants (εr) of the translucent PCA samples showed no significant change, while the Q×f values decreased rapidly. The increased amount of impurities (MgO or spinel) was believed to be the main reason for the lower Q×f values.

KW - B. Grain size

KW - C. Dielectric properties

KW - D. AlO

KW - MgO

UR - https://www.scopus.com/pages/publications/84870292216

U2 - 10.1016/j.ceramint.2012.07.110

DO - 10.1016/j.ceramint.2012.07.110

M3 - 文章

AN - SCOPUS:84870292216

SN - 0272-8842

VL - 39

SP - 1583

EP - 1586

JO - Ceramics International

JF - Ceramics International

IS - 2

ER -

Effect of Mg doping on microwave dielectric properties of translucent polycrystalline alumina ceramic

Abstract

Keywords

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