Compositional Design of Zirconium Titanate Solid Solution for Microwave Dielectric Material and Low Expansive Material

1. ZrTiO_4-HfTiO_4系固溶体的介电性能最终组成和固溶体的良好烧结的颗粒经受以下两种热处理中的任一种。在1300 ° C下加热后，将这两种样品在空气中淬火（简称为淬火样品），并在1200 ° C下加热后缓慢炉冷至900 ° C（简称为冷却样品）。测量淬火和冷却样品的介电性质-在1 kHz和GHz下的相对介电常数（K '）、电容温度系数（TCC）、介电损耗系数（tan δ）和谐振频率温度系数（TCR）。结果总结如下。(1)淬火样品的相对介电常数随Hf含量的增加几乎呈线性下降。(2)冷却样品的成分-K'关系明显不同于淬火样品，K'在Zr_<0.75>Hf_<0.25>TiO_4处出现峰值。(3)淬火油的成分与TCC关系 ...更多信息 加热和冷却的样品分别类似于（1）和（2）中所述的那些。ZrTiO_4-SnO_2系固溶体的介电性质对该体系也作了类似的研究，发现与（1）、（2）和（3）的关系相似，这些一致性与对该化合物的工作假设所预言的一致性一致。据此，提出了一种新的微波介质谐振器结构。此外，该假设对预测相变和热膨胀具有较强的预测能力，可能对解释这些化合物的介电性能具有一定的作用.研究了ZrTiO_4-In_2O_3-Sb_2O_5和ZrTiO_4-In_2O_3-Ta_2O_5系统化合物的相变和热膨胀性能。发现ZrTi_<0.2>In_<0.4>Ta_<0.4>O_4和ZrTi0.1In0.45Ta0.4504的热膨胀小于HfTi 〇 4的热膨胀。而且，事实也正是假设所预测的。少

1. Dielectric Property of Solid Solutions in the ZrTiO_4-HfTiO_4 SystemWell sintered pellets of end compositions and solid solutions were suffered from either of the following two heat treatment. Those two were quenching in air after heating at 1300^ﾟC (abbreviated as quenched sample) and slow furnace cooling to 900^ﾟC after heating at 1200^ﾟ (abbreviated as cooled sample). Dielectric properties -- relative permittivity (K') at 1 kHz and GHz, temperature coefficient of capacitance (TCC), coefficient of dielectric loss (tan delta), and temperature coefficient of resonance frequency (TCR) -- of quenched and cooled samples were measured. Results are summarized as follow.(1) Realative permittivity of the quenched sample decreased almost linearly with increasing Hf content.(2) The composition vs. K' relation of the cooled sample was different significantly from that of the quenched sample taking a peak value of K' at Zr_<0.75>Hf_<0.25>TiO_4.(3) The composition vs. TCC relations of the quenc … More hed and cooled samples were similar to those written in (1) and (2), respectively.2. Dielectric Property of Solid Solutions in the ZrTiO_4-SnO_2 SystemA research analogical to that mentioned in 1. was made to this system also, and resembling respective relations to (1), (2), and (3) were found. These coincidence is that predicted by the working hypothesis on this compound. Accordingly, a new composition of microwave dielectric resonator was presented. Further, the hypothesis which is powerful to predict the phase transformation and thermal expansion, has been revealed might be effective to explain dielectric properties of these compounds.3. Design of Low Expansive Composition by the Working HypothesisPhase transformations and thermal expansion properties were investigated for compounds in systems ZrTiO_4-In_2O_3-Sb_2O_5 and ZrTiO_4-In_2O_3-Ta_2O_5. The thermal expansions of ZrTi_<0.2>In_<0.4>Ta_<0.4>O_4 and ZrTi0.1In0.45Ta0.4504 were found smaller than that of HfTi04. Further, the fact was that predicted by the hypothesis. Less