Effects of Mn and Ti doping on superconductivity in Na0.3CoO2•1.3H2O and charge ordering in Na0.5CoO2

被引：2
|
作者：
Shi, YG [1 ]
Yang, HX [1 ]
Liu, X [1 ]
Ma, WJ [1 ]
Nie, CJ [1 ]
Huang, WW [1 ]
Li, JQ [1 ]
机构：
[1] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100080, Peoples R China
来源：
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2005年 / 432卷 / 3-4期
基金：
中国国家自然科学基金;
关键词：
superconductivity NayCo1-xMxO2; 1.3H(2)O; charge orderings; Na0.5Co1-xMxO2;
D O I：
10.1016/j.physc.2005.08.015
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The superconductivity in Na0.3Co1-xMxO2 (.) 1.3H(2)O and the charge ordering in Na0.5Co1-xMxO2 have been investiuated for M = Mn and Ti Substitution for Co. Single-phased Na0.5Co1-xMxO2 (0 <= x <= 0.1, M = Mn, Ti) materials were prepared by Na deintercalation from Na0.75Co1-xMxO2; the hydrated Na0.3Co1-xMxO2 (.) 1.3H(2)O (0 <= x <= 0.1, M = Mn, Ti) materials were prepared by Na deintercalation and then water intercalation. Measurements of physical properties demonstrated that the superconductivity in Na0.3Co1-xMxO2 (.) 1.3H(2)O is evidently influenced by the Co-site doping and completely ceases at x = 0.02 for Mn doping and x = 0.01 for Ti doping. Analysis of resistivity and magnetization, on Na0.5Co1-xMxO2 revealed that Mn doping has much stronger influence than Ti doping oil both the charge ordering and the low-temperature physical properties. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：299 / 305
页数：7
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