Dielectric properties of Na0.7CoO2 and of the superconducting Na0.3CoO2•1.3H2O

被引：15
|
作者：
Ben-Ishai, P [1 ]
Sader, E
Feldman, Y
Felner, I
Weger, M
机构：
[1] Hebrew Univ Jerusalem, Racah Inst Phys, IL-91904 Jerusalem, Israel
[2] Hebrew Univ Jerusalem, Dept Appl Phys, IL-91904 Jerusalem, Israel
来源：
JOURNAL OF SUPERCONDUCTIVITY | 2005年 / 18卷 / 04期
基金：
以色列科学基金会;
关键词：
superconductivity; hydrates; dielectric permitivity;
D O I：
10.1007/s10948-005-0024-z
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We present dielectric properties of ceramic anhydrous Na0.7CoO2 and the superconducting Na(0.3)CoO(2)(.)13H(2)O materials. The presence of water which induces superconductivity also may increase the dielectric constant (epsilon) of the hydrated material. This is consistent with the predicted relationship between the high epsilon and the enhancement of T-c in high T-c superconductors. The anhydrous sample is porous and the transport is due to some percolation via the pores. The porosity is much higher for the hydrated material and the transport is ionic inside bulk water.
引用
收藏
页码：455 / 459
页数：5
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