【摘 要】
：
The synthesis, structure and properties of a new A5B4O15-type cation-deficient perovskite Ba3La2Ti2Ta2O15 were discribed. The compound was prepared by the conve
【机 构】
：
Key Laboratory of New Processing Technology for Nonferrous Metals and Materials
【出 处】
：
武汉理工大学学报（材料科学版）（英文版）
【基金项目】
：
Opening Foundation of Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Ministry of Education;国家自然科学基金
论文部分内容阅读
The synthesis, structure and properties of a new A5B4O15-type cation-deficient perovskite Ba3La2Ti2Ta2O15 were discribed. The compound was prepared by the conventional solid-state reaction route. The phase and structure of the ceramics were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM). The results reveal that the compound is successfully synthesized. The compound crystallizes in the trigonal system with unit cell parameter a=5.6730(2) A, c=11.6511(2) A, V=324.93(1) A3 and Z=1. The microwave dielectric properties of the ceramic are studied using a network analyzer, and it shows a high dielectric constant of 45.1, a high quality factors with Q×f of 21029GHz, and a positive τf of 5.3ppm℃-1.
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