Chemical instability of the cobalt oxyhydrate superconductor under ambient conditions

M. L. Foo; R. E. Schaak; V. L. Miller; T. Klimczuk; N. S. Rogado; Y. Wang; G. C. Lau; C. Craley; H. W. Zandbergen; N. P. Ong; R. J. Cava

doi:10.1016/S0038-1098(03)00334-X

Chemical instability of the cobalt oxyhydrate superconductor under ambient conditions

M. L. Foo, R. E. Schaak, V. L. Miller, T. Klimczuk, N. S. Rogado, Y. Wang, G. C. Lau, C. Craley, H. W. Zandbergen, N. P. Ong, R. J. Cava

Research output: Contribution to journal › Article › peer-review

90 Scopus citations

Abstract

The layered sodium cobalt oxyhydrate superconductor Na_0.3CoO₂·1.4H₂O is shown through X-ray diffraction and thermogravimetric studies to be one of the series of hydrated phases of Na_0.3CoO₂. Further, it is shown that the material is exceptionally sensitive to both temperature and humidity near ambient conditions, easily dehydrating to a non-superconducting lower hydrate. The observation of this stable lower hydrate with c = 13.8 Å implies that the superconductivity turns on in this system between CoO₂ layer spacings of 6.9 and 9.9 Å at nominally constant chemical doping.

Original language	English (US)
Pages (from-to)	33-37
Number of pages	5
Journal	Solid State Communications
Volume	127
Issue number	1
DOIs	https://doi.org/10.1016/S0038-1098(03)00334-X
State	Published - Jun 2003

All Science Journal Classification (ASJC) codes

General Chemistry
Condensed Matter Physics
Materials Chemistry

Keywords

A. Superconductivity
C. X-ray diffraction
E. Thermogravimetric analysis

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10.1016/S0038-1098(03)00334-X

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title = "Chemical instability of the cobalt oxyhydrate superconductor under ambient conditions",

abstract = "The layered sodium cobalt oxyhydrate superconductor Na0.3CoO2·1.4H2O is shown through X-ray diffraction and thermogravimetric studies to be one of the series of hydrated phases of Na0.3CoO2. Further, it is shown that the material is exceptionally sensitive to both temperature and humidity near ambient conditions, easily dehydrating to a non-superconducting lower hydrate. The observation of this stable lower hydrate with c = 13.8 {\AA} implies that the superconductivity turns on in this system between CoO2 layer spacings of 6.9 and 9.9 {\AA} at nominally constant chemical doping.",

keywords = "A. Superconductivity, C. X-ray diffraction, E. Thermogravimetric analysis",

author = "Foo, {M. L.} and Schaak, {R. E.} and Miller, {V. L.} and T. Klimczuk and Rogado, {N. S.} and Y. Wang and Lau, {G. C.} and C. Craley and Zandbergen, {H. W.} and Ong, {N. P.} and Cava, {R. J.}",

note = "Funding Information: This work was supported by the US National Science Foundation, grants DMR 0244254 and 0213706, and the US Department of Energy, grant DE-FG02-98-ER45706. T. Klimczuk would like to thank The Foundation for Polish Science for support.",

year = "2003",

month = jun,

doi = "10.1016/S0038-1098(03)00334-X",

language = "English (US)",

volume = "127",

pages = "33--37",

journal = "Solid State Communications",

issn = "0038-1098",

publisher = "Elsevier Limited",

number = "1",

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TY - JOUR

T1 - Chemical instability of the cobalt oxyhydrate superconductor under ambient conditions

AU - Foo, M. L.

AU - Schaak, R. E.

AU - Miller, V. L.

AU - Klimczuk, T.

AU - Rogado, N. S.

AU - Wang, Y.

AU - Lau, G. C.

AU - Craley, C.

AU - Zandbergen, H. W.

AU - Ong, N. P.

AU - Cava, R. J.

N1 - Funding Information: This work was supported by the US National Science Foundation, grants DMR 0244254 and 0213706, and the US Department of Energy, grant DE-FG02-98-ER45706. T. Klimczuk would like to thank The Foundation for Polish Science for support.

PY - 2003/6

Y1 - 2003/6

N2 - The layered sodium cobalt oxyhydrate superconductor Na0.3CoO2·1.4H2O is shown through X-ray diffraction and thermogravimetric studies to be one of the series of hydrated phases of Na0.3CoO2. Further, it is shown that the material is exceptionally sensitive to both temperature and humidity near ambient conditions, easily dehydrating to a non-superconducting lower hydrate. The observation of this stable lower hydrate with c = 13.8 Å implies that the superconductivity turns on in this system between CoO2 layer spacings of 6.9 and 9.9 Å at nominally constant chemical doping.

AB - The layered sodium cobalt oxyhydrate superconductor Na0.3CoO2·1.4H2O is shown through X-ray diffraction and thermogravimetric studies to be one of the series of hydrated phases of Na0.3CoO2. Further, it is shown that the material is exceptionally sensitive to both temperature and humidity near ambient conditions, easily dehydrating to a non-superconducting lower hydrate. The observation of this stable lower hydrate with c = 13.8 Å implies that the superconductivity turns on in this system between CoO2 layer spacings of 6.9 and 9.9 Å at nominally constant chemical doping.

KW - A. Superconductivity

KW - C. X-ray diffraction

KW - E. Thermogravimetric analysis

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U2 - 10.1016/S0038-1098(03)00334-X

DO - 10.1016/S0038-1098(03)00334-X

M3 - Article

AN - SCOPUS:0037669077

SN - 0038-1098

VL - 127

SP - 33

EP - 37

JO - Solid State Communications

JF - Solid State Communications

IS - 1

ER -

Chemical instability of the cobalt oxyhydrate superconductor under ambient conditions

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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