Influence of cooling rate on the structure and microwave dielectric properties of Nd(Zn1/2Ti1/2)O3 ceramics

Jiamao Li; Chuangang Fan; Tai Qiu

doi:10.1016/j.ceramint.2015.08.033

Influence of cooling rate on the structure and microwave dielectric properties of Nd(Zn_1/2Ti_1/2)O₃ ceramics

Jiamao Li, Chuangang Fan, Tai Qiu

College of Materials Science and Engineering

Anhui University of Technology

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

5 Scopus citations

Abstract

Structure and microwave dielectric properties of Nd(Zn_1/2Ti_1/2)O₃ ceramics prepared by the conventional solid-state route were investigated as a function of cooling rate. The cooling rate had obvious effect on the structure and microwave dielectric properties of Nd(Zn_1/2Ti_1/2)O₃ ceramics. For the lattice parameters of Nd(Zn_1/2Ti_1/2)O₃, both the a-axis and unit cell volume decreased with the increase of the cooling rate. Meanwhile, the c-axis increased monotonically, leading to the increase in the dielectric constant of Nd(Zn_1/2Ti_1/2)O₃ ceramics. As the cooling rate decreased, the ordering of cations, average grain size and Q×f value of Nd(Zn_1/2Ti_1/2)O₃ ceramics increased. The improvement of the Q×f could be attributed to increase in grain size and ordering of cations. A maximum Q×f value of 165,300 GHz was obtained for Nd(Zn_1/2Ti_1/2)O₃ ceramics sintered at 1360 °C for 4 h with a cooling rate of 1 °C/min.

Original language	English
Pages (from-to)	14930-14934
Number of pages	5
Journal	Ceramics International
Volume	41
Issue number	10
DOIs	https://doi.org/10.1016/j.ceramint.2015.08.033
State	Published - 1 Dec 2015

Keywords

Cooling rate
Microwave dielectric properties
Nd(ZnTi)O
Structure

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10.1016/j.ceramint.2015.08.033

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title = "Influence of cooling rate on the structure and microwave dielectric properties of Nd(Zn1/2Ti1/2)O3 ceramics",

abstract = "Structure and microwave dielectric properties of Nd(Zn1/2Ti1/2)O3 ceramics prepared by the conventional solid-state route were investigated as a function of cooling rate. The cooling rate had obvious effect on the structure and microwave dielectric properties of Nd(Zn1/2Ti1/2)O3 ceramics. For the lattice parameters of Nd(Zn1/2Ti1/2)O3, both the a-axis and unit cell volume decreased with the increase of the cooling rate. Meanwhile, the c-axis increased monotonically, leading to the increase in the dielectric constant of Nd(Zn1/2Ti1/2)O3 ceramics. As the cooling rate decreased, the ordering of cations, average grain size and Q×f value of Nd(Zn1/2Ti1/2)O3 ceramics increased. The improvement of the Q×f could be attributed to increase in grain size and ordering of cations. A maximum Q×f value of 165,300 GHz was obtained for Nd(Zn1/2Ti1/2)O3 ceramics sintered at 1360 °C for 4 h with a cooling rate of 1 °C/min.",

keywords = "Cooling rate, Microwave dielectric properties, Nd(ZnTi)O, Structure",

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AU - Fan, Chuangang

AU - Qiu, Tai

PY - 2015/12/1

Y1 - 2015/12/1

N2 - Structure and microwave dielectric properties of Nd(Zn1/2Ti1/2)O3 ceramics prepared by the conventional solid-state route were investigated as a function of cooling rate. The cooling rate had obvious effect on the structure and microwave dielectric properties of Nd(Zn1/2Ti1/2)O3 ceramics. For the lattice parameters of Nd(Zn1/2Ti1/2)O3, both the a-axis and unit cell volume decreased with the increase of the cooling rate. Meanwhile, the c-axis increased monotonically, leading to the increase in the dielectric constant of Nd(Zn1/2Ti1/2)O3 ceramics. As the cooling rate decreased, the ordering of cations, average grain size and Q×f value of Nd(Zn1/2Ti1/2)O3 ceramics increased. The improvement of the Q×f could be attributed to increase in grain size and ordering of cations. A maximum Q×f value of 165,300 GHz was obtained for Nd(Zn1/2Ti1/2)O3 ceramics sintered at 1360 °C for 4 h with a cooling rate of 1 °C/min.

AB - Structure and microwave dielectric properties of Nd(Zn1/2Ti1/2)O3 ceramics prepared by the conventional solid-state route were investigated as a function of cooling rate. The cooling rate had obvious effect on the structure and microwave dielectric properties of Nd(Zn1/2Ti1/2)O3 ceramics. For the lattice parameters of Nd(Zn1/2Ti1/2)O3, both the a-axis and unit cell volume decreased with the increase of the cooling rate. Meanwhile, the c-axis increased monotonically, leading to the increase in the dielectric constant of Nd(Zn1/2Ti1/2)O3 ceramics. As the cooling rate decreased, the ordering of cations, average grain size and Q×f value of Nd(Zn1/2Ti1/2)O3 ceramics increased. The improvement of the Q×f could be attributed to increase in grain size and ordering of cations. A maximum Q×f value of 165,300 GHz was obtained for Nd(Zn1/2Ti1/2)O3 ceramics sintered at 1360 °C for 4 h with a cooling rate of 1 °C/min.

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KW - Microwave dielectric properties

KW - Nd(ZnTi)O

KW - Structure

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Influence of cooling rate on the structure and microwave dielectric properties of Nd(Zn_1/2Ti_1/2)O₃ ceramics

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