Dielectric properties of the "twinned" 8H-hexagonal perovskite Ba8Nb4Ti3O24

被引：26
作者：
Rawal, R
Feteira, A
Flores, AA
Hyatt, NC
West, AR
Sinclair, DC [1 ]
Sarma, K
Alford, NM
机构：
[1] Univ Sheffield, Dept Mat Engn, Sheffield S1 3JD, S Yorkshire, England
[2] S Bank Univ, London SE1 0AA, England
来源：
JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2006年 / 89卷 / 01期
关键词：
D O I：
10.1111/j.1551-2916.2005.00665.x
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：
The dielectric properties of dense ceramics of the "twinned" 8H-hexagonal perovskite Ba8Nb4Ti3O24 are reported. Single-phase powders were obtained from the mixed-oxide route at 1325 degrees C and ceramics (> 92% of the theoretical X-ray density) by sintering in air or flowing 02 at 1400 degrees-1450 degrees C. The ceramics are dc insulators with a band gap > 3.4 eV that resonate at microwave frequencies with relative permittivity, epsilon(r) similar to 44-48, quality factor, Q x f(r) similar to 21000-23500 GHz (at f(r) similar to 5.5 GHz) and temperature coefficient of resonant frequency, TCf similar to + 115 ppm/K.
引用
收藏
页码：336 / 339
页数：4
相关论文
共 9 条
  • [1] COLLA EL, 1994, JPN J APPL PHYS, V33, P3890
  • [2] High frequency dielectric properties of A5B4O15 microwave ceramics
    Kamba, S
    Petzelt, J
    Buixaderas, E
    Haubrich, D
    Vanek, P
    Kuzel, P
    Jawahar, IN
    Sebastian, MT
    Mohanan, P
    [J]. JOURNAL OF APPLIED PHYSICS, 2001, 89 (07) : 3900 - 3906
  • [3] Ba8ZnTa6O24:: a high-Q microwave dielectric from a potentially diverse homologous series
    Moussa, SM
    Claridge, JB
    Rosseinsky, MJ
    Clarke, S
    Ibberson, RM
    Price, T
    Iddles, DM
    Sinclair, DC
    [J]. APPLIED PHYSICS LETTERS, 2003, 82 (25) : 4537 - 4539
  • [4] Order-disorder phase transition in Ba(Zn1/3Ta2/3)O3
    Qazi, I
    Reaney, IM
    Lee, WE
    [J]. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2001, 21 (15) : 2613 - 2616
  • [5] TAMURA H, 1984, J AM CERAM SOC, V67, P59
  • [6] Structural study of the cation ordering in the ternary oxide Ba8Ti3Nb4O24
    Teneze, N
    Boullay, P
    Petricek, V
    Trolliard, G
    Mercurio, D
    [J]. SOLID STATE SCIENCES, 2002, 4 (09) : 1129 - 1136
  • [7] TEM study of cation-deficient-perovskite related AnBn-1O3ncompounds:: the twin-shift option
    Trolliard, G
    Ténèze, N
    Boullay, P
    Mercurio, D
    [J]. JOURNAL OF SOLID STATE CHEMISTRY, 2004, 177 (4-5) : 1188 - 1196
  • [8] Microwave dielectric properties of hexagonal, perovskites
    Vineis, C
    Davies, PK
    Negas, T
    Bell, S
    [J]. MATERIALS RESEARCH BULLETIN, 1996, 31 (05) : 431 - 437
  • [9] Microwave ceramics for resonators and filters
    Wersing, W
    [J]. CURRENT OPINION IN SOLID STATE & MATERIALS SCIENCE, 1996, 1 (05) : 715 - 731
1