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本文研究了单晶钛酸钡、钛酸锶和多晶试样BaTiO_3,SrTiO_3,(Ba,Sr)TiO_3,PbTiO_3,CaTiO_3和TiO_2。测量是在超高频的厘米波段进行的,温度为一196～1000℃。测量的频率范围与较早期的研究增大了,钛酸钡就有可能在顺电相中开始介质色散,在50～60千兆赫时,介电常数ε随频率下降,而损耗tgδ随频率增大。相反,钛酸钡在铁电相中,在向毫米波段过渡时,所熟知的多晶试样的超高频色散实际
In this paper, BaTiO_3, SrTiO_3, (Ba, Sr) TiO_3, PbTiO_3, CaTiO_3 and TiO_2 of single crystal barium titanate, strontium titanate and polycrystalline samples were studied. Measurements are made in the UHF centimeter band at a temperature of 196-1000 ° C. The measured frequency range increases with earlier studies where it is possible for barium titanate to begin dielectric dispersion in the paraelectric phase with a dielectric constant ε decreasing with frequency while the loss tgδ increasing with frequency . In contrast, ultra-high frequency dispersion of the known polycrystalline sample in the ferroelectric phase of barium titanate during the transition to the millimeter wave band