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New superconducting sodium-nitrogen-C60 ternary compound

Authors :
Hiroshi Kitagawa
K. Imaeda
I.I. Khairullin
M. Nagata
N. Mizutani
Kyuya Yakushi
Hiroo Inokuchi
Source :
Solid State Communications. 87:375-378
Publication Year :
1993
Publisher :
Elsevier BV, 1993.

Abstract

We have prepared sodium-doped C60 utilizing the thermal decomposition of sodium azide (NaN3). The strong low-magnetic field microwave absorption with a clear hysteresis was observed in the samples of NanC60 (n=3∼4), indicating the superconducting nature. By means of a SQUID measurement, the superconducting transition temperature is found to be around 12 K. Significantly, elemental analysis detected a nitrogen which was surely produced in the process of the thermal decomposition of NaN3. We suppose that this new superconducting phase will be NaxNyC60 where x is between 3 and 4, and y is unknown. This is the first superconducting material in Na-doped C60 without other alkali metals.

Details

ISSN :
00381098
Volume :
87
Database :
OpenAIRE
Journal :
Solid State Communications
Accession number :
edsair.doi...........fc811d237360f07c2bc958940bb66849
Full Text :
https://doi.org/10.1016/0038-1098(93)90780-q