Crystal structure and microwave dielectric characteristics of Zr-substituted Ni0.5Ti0.5NbO4 ceramic
Crystal structure and microwave dielectric characteristics of Zr-substituted Ni0.5Ti0.5NbO4 ceramic
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Zr取代Ni0.5Ti0.5NbO4陶瓷的晶体结构及微波介电特性
DOI：
10.1142/s1793604719500206
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发表时间：
2019-05
影响因子：
1.3
通讯作者：
Zhang Yingchun
中科院分区：
文献类型：
--
作者：
Wu Mengjuan;Chen Jundan;Zhang Yingchun
采用常规固相反应法制备了Ni[式：见正文]（Ti[式：见正文] Zn（Ⅱ））NbO4微波介质陶瓷。利用X射线粉末衍射和扫描电子显微镜分析了相变和显微结构。对于[式：见正文]，Ni[式：见正文]（Ti[式：见正文] Zn）NbO4陶瓷表现出金红石和黑钨矿相的共存。微波介电性能与样品的密度、烧结条件和化学成分密切相关。Zr的替代可以有效抑制晶粒的异常长大，降低陶瓷的介电损耗。当[公式：[公式：见正文]从0增加到0.3时，Ni[公式：见正文]（Ti[公式：见正文] ZrO2）NbO4陶瓷的[公式：见正文]值从7294[公式：见正文]GHz增加到21798[公式：见正文]GHz，但第二相导致介电常数降低到35.73。对于Ni[式：见文字]（Ti[式：见文字]Zr[式：见文字] NbO 4陶瓷，当[式：见文字]时可以实现[式：见文字]。
Ni[Formula: see text](Ti[Formula: see text]Zrx)NbO4 microwave dielectric ceramics were prepared via the conventional solid-state reaction route. The phase transitions and microstructure were analyzed using X-ray powder diffraction and scanning electron microscopy. For [Formula: see text], the Ni[Formula: see text](Ti[Formula: see text]Zrx)NbO4 ceramics exhibited coexistence of rutile and wolframite phase. The microwave dielectric properties were strongly related to the density, sintering condition, and chemical composition of samples. The Zr-substitution could inhibit the abnormal grain growth effectively which reduced the ceramic dielectric loss. When [Formula: see text] increased from 0 to 0.3, the [Formula: see text] values of Ni[Formula: see text](Ti[Formula: see text]Zrx)NbO4 ceramics increased from 7294[Formula: see text]GHz to 21798[Formula: see text]GHz, but the second phase caused the decrease of dielectric constant to 35.73. For Ni[Formula: see text](Ti[Formula: see text]Zr[Formula: see text]NbO4 ceramics, [Formula: see text] can be achieved when [Formula: see text].
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影响因子：
6.2
作者：
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通讯作者：
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影响因子：
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影响因子：
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作者：
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影响因子：
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作者：
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