Correlation between the 1:2 atomic order and microwave dielectric loss in the off-stoichiometric Ba(Zn1/3Ta2/3)O3

被引：14

作者：

Padchasri, Jintara ^{[1
,2
]}

Yimnirun, Rattikorn ^{[3
]}

Kolodiazhnyi, Taras ^{[4
]}

机构：

[1] Suranaree Univ Technol, Inst Sci, Sch Phys, Nakhon Ratchasima 30000, Thailand

[2] Suranaree Univ Technol, NANOTEC SUT COE Adv Funct Nanomat, Nakhon Ratchasima 30000, Thailand

[3] Vidyasirimedhi Inst Sci & Technol, Sch Energy Sci & Engn, Rayong 21210, Thailand

[4] Natl Inst Mat Sci, 1-1 Namiki, Tsukuba, Ibaraki 3050044, Japan

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2018年 / 38卷 / 09期

关键词：

Perovskites; Dielectric loss; Stoichiometry; Microwave resonators; Atomic ordering; NONSTOICHIOMETRY; CERAMICS; CRYSTAL;

D O I：

10.1016/j.jeurceramsoc.2018.03.036

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We report close correlation between the 1:2 atomic order and microwave dielectric loss in the off-stoichiometric Ba(Zn1/3Ta2/3)O-3 (BZT). Small off-stoichiometric deviations have a large effect on the ordering and Q x f values. The Ba4Ta2O9-BZT-'Zn4Ta2O9' pseudo tie line separating the Ta-rich and Ta-poor regions also demarcates the 1:2 ordered and disordered BZT. The low-loss off-stoichiometric BZT ceramics are located in the 1:2 ordered region of the BaO-ZnO-Ta2O5 phase diagram. Without exception the disordered BZT ceramics show high dielectric loss. Stoichiometric BZT with 1:2 atomic order shows Q x f = 113 THz. The off-stoichiometric 1:2 ordered BZT ceramics with the highest Q x f > 200 THz are located in the ZnO-deficient part of the ternary phase diagram.

引用

页码：3412 / 3415

页数：4

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