## 摘要

The microwave dielectric properties and microstructures of (1 - y)Ca_{1-x}Nd_{2x/3}TiO_{3-y}Li_{1/2}Nd_{1/2 }TiO_{3} ceramics, prepared by a mixed oxide route, have been investigated. A maximum quality factor Q × f = 8600GHz (where f is the resonant frequency) was achieved for samples with y = 0 and x = 0.39, although the dielectric properties varied with sintering temperature. The Q × f value of (1 - y)Ca_{1-x}Nd_{2x/3}TiO_{3-y}Li_{1/2}Nd_{1/2 }TiO_{3} increased up to 1400°C, after which it decreased. The decrease in dielectric properties was coincident with the onset of rapid grain growth. In the (1 - y)Ca_{1-x}Nd_{2x/3}TiO_{3-y}Li_{1/2}Nd_{1/2 }TiO_{3} system, as y increased, the temperature coefficient of resonant frequency (τ_{f}) decreased from 800 to 8 ppm/ °C for y = 0.52 (x = 0.39). However, the optimum combination of microwave dielectric properties was achieved at 1400°C for samples where y = 0.45 (x = 0.39) with a dielectric constant ε_{r} of 101, a Q × f value of 5300 (at 7.2 GHz) and a τ_{f} value of +13ppm/°C.

原文 | English |
---|---|

頁（從 - 到） | 5650-5653 |

頁數 | 4 |

期刊 | Japanese Journal of Applied Physics |

卷 | 41 |

發行號 | 9 |

DOIs | |

出版狀態 | Published - 2002 9月 |

## All Science Journal Classification (ASJC) codes

- 一般工程
- 一般物理與天文學

## 指紋

深入研究「Microwave dielectric properties and microstructures of Ca_{1-x}Nd

_{2x/3}TiO

_{3}-Li

_{1/2}Nd

_{1/2 }TiO

_{3}ceramics」主題。共同形成了獨特的指紋。