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Effects of Mn and Ti doping on superconductivity in Na0.3CoO2 ·1.3H2O and charge ordering in Na0.5CoO2
- Source :
-
Physica C . Nov2005, Vol. 432 Issue 3/4, p299-305. 7p. - Publication Year :
- 2005
-
Abstract
- Abstract: The superconductivity in Na0.3Co1−x M x O2 ·1.3H2O and the charge ordering in Na0.5Co1−x M x O2 have been investigated for M=Mn and Ti substitution for Co. Single-phased Na0.5Co1−x M x O2 (0⩽ x ⩽0.1, M=Mn, Ti) materials were prepared by Na deintercalation from Na0.75Co1−x M x O2; the hydrated Na0.3Co1−x M x O2 ·1.3H2O (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−x M x O2 ·1.3H2O 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−x M x O2 revealed that Mn doping has much stronger influence than Ti doping on both the charge ordering and the low-temperature physical properties. [Copyright &y& Elsevier]
- Subjects :
- *SUPERCONDUCTIVITY
*ELECTRIC conductivity
*FERROMAGNETISM
*SEMICONDUCTOR doping
Subjects
Details
- Language :
- English
- ISSN :
- 09214534
- Volume :
- 432
- Issue :
- 3/4
- Database :
- Academic Search Index
- Journal :
- Physica C
- Publication Type :
- Academic Journal
- Accession number :
- 19128019
- Full Text :
- https://doi.org/10.1016/j.physc.2005.08.015