Effect of nonstoichiometry on the structure and microwave dielectric properties of Ba(Co1/3Nb2/3)O3

被引:20
作者
Belous, A. G. [1 ]
Ovchar, O. V. [1 ]
Kramarenko, A. V. [1 ]
Jancar, Bostjan [2 ]
Bezjak, Jana [2 ]
Suvorov, Danilo [2 ]
机构
[1] Natl Acad Sci Ukraine, Vernadsky Inst Gen & Inorgan Chem, UA-03680 Kiev, Ukraine
[2] Jozef Stefan Inst, Ljubljana 1000, Slovenia
关键词
CATION ORDER;
D O I
10.1134/S002016851005016X
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Polycrystalline nonstoichiometric Ba(Co1/3Nb2/3)O-3 (BCN) materials have been synthesized and investigated. Deviations from stoichiometry have been shown to lead to the formation of crystalline Ba6CoNb9O30 (barium deficiency) and Ba8CoNb6O24 (cobalt deficiency). The effect of phase composition on the microwave dielectric properties of BCN has been studied. The results demonstrate that the dielectric properties of BCN-based materials can be tuned by varying cobalt content. The materials obtained are high-Q microwave dielectrics with temperature-stable properties.
引用
收藏
页码:529 / 533
页数:5
相关论文
共 15 条
[1]   The crystal structure of Ba8Ta6NiO24: Cation ordering in hexagonal perovskites [J].
Abakumov, AM ;
VanTendeloo, G ;
Scheglov, AA ;
Shpanchenko, RV ;
Antipov, EV .
JOURNAL OF SOLID STATE CHEMISTRY, 1996, 125 (01) :102-107
[2]   Effects of microstructure on the microwave dielectric properties of Ba(Co1/3Nb2/3)O3 and (1-x)Ba(Co1/3Nb2/3)O3-xBa(Zn1/3Nb2/3)O3 ceramics [J].
Ahn, CW ;
Jang, HJ ;
Nahm, S ;
Park, HM ;
Lee, HJ .
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2003, 23 (14) :2473-2478
[3]   Effect of cation order on microwave dielectric properties of Ba(Zn1/3Nb2/3)O3 ceramics [J].
Azough, F ;
Leach, C ;
Freer, R .
EURO CERAMICS VIII, PTS 1-3, 2004, 264-268 :1153-1156
[4]  
Davies PK, 1997, J AM CERAM SOC, V80, P1727, DOI 10.1111/j.1151-2916.1997.tb03046.x
[5]   Communicating with wireless perovskites: cation order and zinc volatilization [J].
Davies, PK ;
Borisevich, A ;
Thirumal, M .
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2003, 23 (14) :2461-2466
[6]  
ENDO K, 1987, J AM CERAM SOC, V70, pC215, DOI 10.1111/j.1151-2916.1987.tb05746.x
[7]  
FIEDZIUSZKO SJ, 2002, IEEE T MICROW THEORY, V50, P1188
[8]   Ba6CoNb9O30 and Ba6FeNb9O30: Two new tungsten-bronze-type ferroelectrics. Centrosymmetry of Ba5.2K0.8U2.4Nb7.6O30 at 300 K [J].
Foster, MC ;
Brown, GR ;
Nielson, RM ;
Abrahams, SC .
JOURNAL OF APPLIED CRYSTALLOGRAPHY, 1997, 30 :495-501
[9]   ORDERING IN COMPOUNDS OF A(B'0.33TA0.67)O3TYPE [J].
GALASSO, F ;
PYLE, J .
INORGANIC CHEMISTRY, 1963, 2 (03) :482-&
[10]   Niobate-based microwave dielectrics suitable for third generation mobile phone base stations [J].
Hughes, H ;
Iddles, DM ;
Reaney, IM .
APPLIED PHYSICS LETTERS, 2001, 79 (18) :2952-2954