Effects of (Zn1/3Nb2/3)4+ co-substitution on structure and microwave dielectric properties of 0.75CaTiO3-0.25SmAlO3 ceramics

被引：1
|
作者：
Luo, Shengmin [1 ,2 ]
Zhang, Yajuan [1 ,2 ]
Wang, Qiang [1 ,2 ]
Que, Tao [1 ,2 ]
Lu, Yang [1 ,2 ]
Shan, Yiting [1 ,2 ]
Zhou, Hongqing [1 ,2 ]
机构：
[1] Nanjing Tech Univ, Coll Mat Sci & Engn, Nanjing 210009, Peoples R China
[2] Jiangsu Collaborat Innovat Ctr Adv Inorgan Funct C, Nanjing 210009, Peoples R China
来源：
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS | 2023年 / 34卷 / 27期
关键词：
CRYSTAL-STRUCTURE; MICROSTRUCTURE; CA;
D O I：
10.1007/s10854-023-11275-z
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
0.75CaTi(1-x)( Zn1/3Nb2/3) O-x(3)-0.25SmAlO(3) ( CT(1-x)ZN(x)SA) ( 0 <= x <= 0.09) ceramics were synthesized by a solid-state reaction process. The effects of ( Zn1/3Nb2/3)(4)+ co- substitution on the structure and dielectric properties of the ceramics were investigated. Every sample presented a single orthogonal perovskite structure. Moderate amounts of ( Zn1/3Nb2/3)(4+) substitution effectively improved the densification, dielectric properties, flexural strength, and lowered the sintering temperature, while excessive substitution deteriorated the overall performance. Excellent properties were achieved for 0.75CaTi(0.97)(Zn1/3Nb2/3)(0.03)O-3-0.25SmAlO(3) ceramics sintered at 1450 degrees C for 5 h, including epsilon(r) = 54.23, Q x f = 31,063 GHz (at 4.85 GHz), iota(f) = + 16.7 ppm/degrees C, a = + 10.99 ppm/degrees C, R = 135.16 MPa.
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页数：12
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