Microwave dielectric properties of (1-x)CeO2-xRE2O3 (RE = La, Nd, Sm, Eu, Gd, Dy, Er, Tm, Yb and Y) (0 ≤ x ≤ 1) ceramics

被引：31

作者：

Anjana, Prabhakaran Sreekumari ^{[1
]}

Joseph, Tony ^{[1
]}

Sebastian, Mailadil Thomas ^{[1
]}

机构：

[1] CSIR, Natl Inst Interdisciplinary Sci & Technol, Mat & Minerals Div, Trivandrum 695019, Kerala, India

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2010年 / 490卷 / 1-2期

关键词：

Solid state reactions; Microwave dielectric properties; Ceria; Rare earths; Solid solutions; HYDROTHERMAL SYNTHESIS; CERIA; OXIDE; RAMAN; ELECTROLYTES; CONDUCTIVITY; PR;

D O I：

10.1016/j.jallcom.2009.09.057

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The (1 - x)CeO2-xRE(2)O(3) (RE = La, Nd, Sm, Eu, Gd, Dy, Er, Tm, Yb and Y) (0 <= x <= 1) ceramics have been prepared by solid state ceramic route. The solubility of different rare earths (RE) in ceria was investigated by using XRD, SEM and EDXA techniques. The microwave dielectric properties of the ceramics having different compositions were investigated. Several high Q dielectric resonator compositions were identified in (1 - x)CeO2-xRE(2)O(3) (RE = La, Nd, Sm, Eu, Gd, Dy, Er, Tm, Yb and Y), ceramics for 0 <= x <= 1. The best properties were obtained for 0.9CeO(2)-0.11 Eu2O3 (epsilon(r) = 25.4, Q(u) x f = 70,300 GHz, tau(f) = -64 ppm/degrees C), 0.8CeO(2)-0.2Dy(2)O(3) (epsilon(r) = 26.2, Q(u) x f = 70,150 GHz, tau(f) = -57 ppm/degrees C) and 0.3CeO(2)-0.7Sm(2)O(3) (epsilon(r) = 19.7, Q(u) x f = 79,450 GHz, tau(f) = -51 ppm/degrees C). (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：208 / 213

页数：6

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