Phase formation and dielectric characterization of the Bi2O3-TeO2 system prepared in an oxygen atmosphere
Phase formation and dielectric characterization of the Bi2O3-TeO2 system prepared in an oxygen atmosphere
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DOI：
10.1111/j.1551-2916.2004.00591.x
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发表时间：
2004-04-01
影响因子：
3.9
通讯作者：
Suvorov, D
中科院分区：
文献类型：
--
作者：
Udovic, M;Valant, M;Suvorov, D
Bi_2O_3-TeO_2体系的固相合成表明，在氧气气氛下，Te ~（4+）氧化为Te ~（6+），生成四种室温稳定的化合物：Bi_2Te_2O_8，Bi_2TeO_6，Bi_6Te_2O_（15），以及一种新的化合物，其名义组成为7 Bi（2），O（3+）_2TeO（2），.致密的陶瓷可以由所有这些化合物通过在氧气气氛下在650度和800度之间烧结来制备。这些化合物的介电常数从近似30到近似54，QXf值从1.100到41.000 GHz（近似5 GHz），谐振频率温度系数从-43到-144 ppm/K。Bi 6 Te 2 O 15和7 Bi（2）O（3）-2TeO（2）不与银反应，因此，它们具有用于低温共烧陶瓷（LTCC）技术的潜力。
Solid-state synthesis of compositions from the Bi2O3-TeO2 system show that, under an oxygen atmosphere, Te4+ oxidizes to Te6+ and yields four room-temperature stable compounds: Bi2Te2O8, Bi2TeO6, Bi6Te2O15, and new a compound with the nominal composition 7Bi(2),O(3+)2TeO(2),. Dense ceramics can be prepared from all these compounds by sintering between 650degrees and 800degreesC under an oxygen atmosphere. The permittivity of these compounds varies from similar to30 to similar to54, the QXf value from 1.100 to 41.000 GHz (similar to5 GHz), and the temperature coefficient of resonant frequency from -43 to -144 ppm/K. Bi6Te2O15 and 7Bi(2)O(3)-2TeO(2) do not react with silver, and, therefore, they have the potential to be used for applications in low-temperature cofired ceramic (LTCC) technology.