X射线衍射分析表明：所有样品在1250℃保温2h烧结均形成铁电性的斜方钨青铜型结构（tungsten bronze structure,TB）。相对介电常数-温度（εr-θ）曲线表明：该体系具有高的θC（500～560℃）。
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tungsten-bronze structure 钨青铜结构
filled tungsten bronze structure 充满型钨青铜结构
tetragonal tungsten bronze structure 四方钨青铜结构
niobates with tungsten bronze structure 钨青铜型铌酸盐
tungsten bronze type structure 钨青铜型结构
tungsten bronze crystal structure 钨青铜型晶体结构
The results showed new compounds and ceramics were all phase pure and belonged to tetragonal tungsten bronze structure. Each diffraction peak was be indexed.
结果表明,合成的新化合物与陶瓷全部为纯相,具有四方钨青铜结构,并对X射线衍射数据进行了指标化,每个衍射峰都得到了较好的指标化。
参考来源 - 铌酸盐AIn second part of this paper, the Sr_(2-x)Ca_xNaNb_5O_(15) piezoelectric ceramics with tungsten bronze structure show the piezoelectric properties of d_(33)-70pC/N, dielectric constantε_1>1400, dielectric loss tgδ<1% and relatice densityρ>92%.
本论文中制备的钨青铜结构Sr_(2-x)Ca_xNaNb_5O_(15)(x=0-0．15)无铅压电陶瓷的d_(33)为70pC／N左右，室温介电常数大于1400，室温介电损耗小于1％，相对密度大于92％。
参考来源 - 两种铌酸盐无铅压电陶瓷的制备和物性研究·2,447,543篇论文数据，部分数据来源于NoteExpress
The results of XRD and SEM show that the main crystal phase is the non-full-filled tetragonal tungsten bronze structure.
SEM结构分析可知，主晶相为非填满型钨青铜结构四方晶相。
The general formula, cation site occupancy and its coordination number in the structure of tungsten bronze niobate crystals are discussed.
讨论了钨青铜结构铌酸盐晶体的化学通式， 晶体结构中的阳离子占位及其配位数。
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