Electrical properties and temperature sensitivity of Li/Mg modified Ni0.7Zn0.3O based ceramics
Electrical properties and temperature sensitivity of Li/Mg modified Ni0.7Zn0.3O based ceramics
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Li/Mg改性Ni0.7Zn0.3O基陶瓷的电性能和温度敏感性
DOI：
10.1016/j.jallcom.2018.05.210
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发表时间：
2018-09
影响因子：
6.2
通讯作者：
Zhicheng Li
中科院分区：
文献类型：
--
作者：
Xiang Sun;Senlin Leng;Hong Zhang;Zhenli He;Zhicheng Li
采用湿化学法制备了名义成分为[（Ni 0. 7Zn 0. 3）1-xMgx]1-yLiyO（x≤ 0. 5，y ≤ 0. 06）的Li/Mg改性Ni 0. 7Zn 0. 3 O粉体。粉末经压制、烧结后得到相应的陶瓷材料。X射线衍射分析表明，所有样品均为立方结构单相陶瓷，具有典型的负电阻温度系数（NTC）效应。通过改变Li+和Mg 2+的阳离子浓度，实现了陶瓷室温电阻率（22 ~ 13.621 kΩ cm）和热敏常数（2444 ~ 5613 K）的可调。复阻抗分析表明，晶粒效应和晶界效应共同作用于陶瓷的导电和NTC特性。据此提出了可能的导电模型，包括极化子跳跃导电和带导电。
Li/Mg modified Ni0.7Zn0.3O powders with nominal compositions of [(Ni0.7Zn0.3)1-xMgx]1-yLiyO (x≤ 0.5,y≤ 0.06) were prepared through a wet chemical synthesis method. The powders were compacted and sintered by the conventional ceramic processing to obtain the related ceramics. The X-ray diffraction analysis indicates that all the ceramics have single phase with cubic structure and exhibit typical effect of negative temperature coefficient (NTC) of resistivity. The adjustable room-temperature resistivity (ranging from 22 Ω cm to 13.621 kΩ cm) and thermal-sensitivity constant (changing from 2444 K to 5613 K) of ceramics were achieved by altering the cationic concentrations of Li+and Mg2+. The complex impedance analysis reveals that both grain effect and grain boundary effect contribute collectively to the electrical conduction and NTC feature of the ceramics. The possible conduction models including polaron hopping conduction and band conduction were proposed accordingly.
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影响因子：
4
作者：
Ku, Chieh-Jen;Duan, Ziqing;Garfunkel, Eric
通讯作者：
Garfunkel, Eric
DOI：
10.1007/s10854-017-8471-4
发表时间：
2018-03
期刊：
Journal of Materials Science: Materials in Electronics
影响因子：
--
作者：
Mengyu Guan;Jincheng Yao;W. Kong;Junhua Wang;Aimin Chang
通讯作者：
Mengyu Guan;Jincheng Yao;W. Kong;Junhua Wang;Aimin Chang
影响因子：
3.2
作者：
Shifeng Yu;Shuyu Wang;Ming Lu;L. Zuo
通讯作者：
Shifeng Yu;Shuyu Wang;Ming Lu;L. Zuo
影响因子：
2.3
作者：
H. Nishitani;K. Ohta;S. Kitano;Ryosuke Hamano;M. Inada;Tomohiro Shimizu;S. Shingubara;H. Kozuka;T. Saitoh
通讯作者：
H. Nishitani;K. Ohta;S. Kitano;Ryosuke Hamano;M. Inada;Tomohiro Shimizu;S. Shingubara;H. Kozuka;T. Saitoh
Mo改性CuFe2O4陶瓷的电性能和温度敏感性
影响因子：
2.3
作者：
Ya Liu;Senlin Leng;Shuhua Li;Weiyi Fu;Zhicheng Li;Hong Zhang
通讯作者：
Hong Zhang