Structural and Electrical Properties of Rare Earth Modified Tungsten Bronze Niobates

B. N. Parida; Piyush R. Das; R. Padhee; R. N. P. Choudhary

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Structural and Electrical Properties of Rare Earth Modified Tungsten Bronze Niobates

机译：稀土改性钨青铜铌酸盐的结构和电性能

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The polycrystalline sample Li_2Pb_2Sm_2W_2Ti_4Nb_4O_(30) is a rare earth modified tungsten bronze (TB) niobates have been prepared by high temperature solid state reaction technique. Structural and micro structural study from XRD and SEM analysis confirms material is single phase compound. From impedance study it is observed that material is non-Debye type and negative temperature coefficient of resistance (NTCR) in nature. Hopping types of charge carrier/polaron hopping is observed from ac conductivity study. Thermally activated relaxation phenomena in the material confirmed from both impedance and modulus study. Variation of relaxation time with inverse of absolute temperature exhibits the both localized and non-localized hopping of charge carriers are similar type.

机译：多晶样品Li_2Pb_2Sm_2W_2Ti_4Nb_4O_（30）是通过高温固相反应技术制备的稀土改性铌青铜（TB）铌酸盐。 XRD和SEM分析的结构和微观结构研究证实材料为单相化合物。从阻抗研究中可以看出，材料本质上是非德拜型的，并且电阻的负温度系数（NTCR）为负。从交流电导率研究中可以观察到电荷载流子/极化子跳跃的跳跃类型。材料的热活化弛豫现象已通过阻抗和模量研究得到证实。弛豫时间与绝对温度成反比的变化表明，载流子的局部跳变和非局部跳变均为相似类型。

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《Advanced Science Letters》 |2014年第4期|共4页
作者
B. N. Parida; Piyush R. Das; R. Padhee; R. N. P. Choudhary;
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正文语种 eng
中图分类工业技术;
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Ceramics; XRD; SEM; Electrical Properties;

机译：陶瓷;X射线衍射;SEM;电性能;

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1. Structural and Electrical Properties of Rare Earth Modified Tungsten Bronze Niobates [J] . B. N. Parida, Piyush R. Das, R. Padhee, Advanced Science Letters . 2014,第3a4期

机译：稀土改性钨青铜铌酸盐的结构和电性能
2. Structural Analysis and Electrical Property of Tungsten Bronze Prepared by Rare Earth Gaseous Permeation [J] . Li Zhonghua, Li Xin, Chen Gang Journal of rare earths . 2004,第6期

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3. Structural Analysis and Electrical Property of Tungsten Bronze Prepared by Rare Earth Gaseous Permeation [J] . Li Zhonghua, Li Xin, Chen Gang Journal of rare earths . 2004,第6期

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4. Structural Analysis and Electrical Property of Tungsten Bronze Prepared by Rare Earth Gaseous Permeation [C] . International Conference on Rare Earth Research and Application; 2004; . 2004

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Structural and Electrical Properties of Rare Earth Modified Tungsten Bronze Niobates

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