New Microwave Dielectric Ceramics of Zirconium Titanate Solid Solutions

新型钛酸锆固溶体微波介质陶瓷

• 批准号: 07555200
• 负责人: IKAWA Hiroyuki
• 金额: $ 1.15万
• 依托单位: Kanagawa Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07555200/
• 关键词: Microwave Dielectrics; Zirconium Titanate; Mixed Ion Perovskite; Q Value; Temperature Coefficient of Resonance Frequency; α-PbO_2構造; 比誘電率

Microwave Dielectric Properties of Zr_xHf_yTi_zO_4 (x+y+z=2) Solid Solution CeramicsThis research aimed at developing a microwave dielectric ceramics of the title composition having a high Q-value. High purities raw materials were used for this purpose, further, examined processings were a co-precipitation method and solid state reaction methods. The f・Q values measured in this study ranged from 14 to 19 THz, which were not hihg enough for this experiment. The value is expected to increase by choosing a slower cooling rate after sintering. Although there were some inconsistency, the relative permittivity was estimated to increase with increasing Ti content (z) and/or Zr content. The largest relative permittivity measured in this study was 41.2 for Zr_<0.34>Hf_<0.58>Ti_<1.08>O_4.The compositions were made clear which were tunable to the zero ppm for a temprature coefficient of resonance frequency.Microwave Dielectric Properties of Complex Perovskite A-site of which is Isomorphoologically Substituted epsilon_r of Ba_<1-x>Ca_x (Mg_<1/3>Ta_<2/3>)O_3 and Ba_<1-x>Ca_x (Mg_<0.3>Ta_<0.6>Zr_<0.1>)O_3 increased significantly with x to have peaks near at solubility limits. The pressure coefficient of epsilon_r increased with increasing epsilon_r of the composition.

Zr_xHf_yTi_zO_4（x+y+z=2）固溶体陶瓷的微波介电性能本研究旨在研制一种具有高Q值的微波介质陶瓷。高纯度的原料用于此目的，此外，所研究的工艺是共沉淀法和固态反应法。本研究中测量的f·Q值范围为14 ~ 19 THz，对于本实验来说，f·Q值不够高。通过在烧结后选择较慢的冷却速率，预期该值会增加。尽管存在一些不一致性，但估计相对介电常数随着Ti含量（z）和/或Zr含量的增加而增加。实验测得Zr_ Hf_ Ti_O_4的最大相对介电常数为41.2<0.34><0.58><1.08>，确定了其组成，其谐振频率的温度系数可调至0 ppm，Ba_<1-x>Ca_x（Mg_（1/3）Ta_（2/3））O_3和Ba_ Ca_<1-x>x（Mg_<0.3>Ta_<0.6>Zr_<0.1>）O_3的A位被等形取代的复合过氧化物的微波介电性能随x的增加而显著增加，在溶解度极限附近有峰值。随着组成比的增大，复合材料的压差系数增大.

项目成果

H.Ikawa et al.: "Change in Paraelectric Propeity Caused by Substitution of A-sito Ion of Perouskite Oxide" Electroceramics V. book 2. 41-44 (1996)

H.Ikawa 等人：“钙钛矿氧化物的 A-sito 离子取代引起的顺电特性变化”Electroceramics V. 书 2. 41-44 (1996)

M.Yamashiro, M.Takemoto, and H.Ikawa: "Paraelectricity and its Pressure Dependence of (Ba_<1-x>Ca_x)(Mg_<1/3>Ta_<2/3>)O_3 Ceramics" Proceedings of 1997 Annual Meeting of the Ceramic Society of Jpn.19 (1997)

M.Yamashiro、M.Takemoto、H.Ikawa：“(Ba_<1-x>Ca_x)(Mg_<1/3>Ta_<2/3>)O_3陶瓷的顺电性及其压力依赖性”1997年论文集

山城道生ほか: "(Ba_<1-x>Ca_x)(Mg_<1/3>Ta_<2/3>)O_3の常誘電性とその圧力変化" 第16回電子材料研究討論会講演予稿集. 89-90 (1996)

Michio Yamashiro等：“(Ba_<1-x>Ca_x)(Mg_<1/3>Ta_<2/3>)O_3顺电性及其压力变化”第16届电子材料研究会议论文集89-90( 1996）

H.Ikawa: "Topics on Correlation Between Microwave Dielectric Properties and Constituent Elements of Mixed Perovskite" Proceedings of the 15th Electronics Devision Meeting of Japan. 31-32 (1995)

H.Ikawa：“微波介电性能与混合钙钛矿组成元素之间的相关性专题”日本第15届电子学部门会议论文集。

H.Ikawa, M.Yamashiro, T.Niwa, T.Omata, and K.Urabe: "Temperature and Pressure Dependencies of Microwave Dielectric Properties of a System (Ba_<1-x>Ca_x)(Mg_<1/3>Ta_<2/3>)O_3" Transactions of the Materials Research Society of Japan. Vol.20. 682-685 (1996)

H.Ikawa、M.Yamashiro、T.Niwa、T.Omata 和 K.Urabe：“系统微波介电性能的温度和压力依赖性 (Ba_<1-x>Ca_x)(Mg_<1/3>Ta_