Low Temperature Anomalies in the Specific Heat and Magnetic Susceptibility of Na_{0.7}CoO_2 Samples

• Authors: A. Baran , A. Zorkovská , A. Feher , J. Šebek , E. Šantavá , J. Hejtmánek , M. Veverka , I. Bradarić , M. Ružička
• Languages of publication: EN

Abstracts

EN

We present a comparative study of Na_{0.7}CoO_2 samples obtained from three different sources and prepared by different methods. The specific heat and magnetic susceptibility measurements in the temperature range 2-300 K show substantial influence on the observed anomalies, which underlines that the system is extremely sensitive to preparation protocols.

Keywords

EN

75.40.Cx; 72.80.Ga

Discipline

• 75.40.Cx: Static properties (order parameter, static susceptibility, heat capacities, critical exponents, etc.)
• 72.80.Ga: Transition-metal compounds

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2008
• Volume: 113
• Issue: 1
• Pages: 495-498

Dates

published

2008-01

received

2007-07-09

Contributors

author

A. Baran

• Centre of Low Temperature Physics of the Faculty of Science UPJŠ, and Institute of Experimental Physics, SAS, 041 54 Košice, Slovakia

author

A. Zorkovská

• Centre of Low Temperature Physics of the Faculty of Science UPJŠ, and Institute of Experimental Physics, SAS, 041 54 Košice, Slovakia

author

A. Feher

• Centre of Low Temperature Physics of the Faculty of Science UPJŠ, and Institute of Experimental Physics, SAS, 041 54 Košice, Slovakia

author

J. Šebek

• Institute of Physics AS CR, 18221 Prague, Czech Republic

author

E. Šantavá

• Institute of Physics AS CR, 18221 Prague, Czech Republic

author

J. Hejtmánek

• Institute of Physics AS CR, 18221 Prague, Czech Republic

author

M. Veverka

• Institute of Physics AS CR, 18221 Prague, Czech Republic

author

I. Bradarić

• The "Vinča" Institute of Nuclear Sciences, 11001 Belgrade, Serbia

author

M. Ružička

• Faculty of Chemical and Food Technology, STU, 812 43, Bratislava, Slovakia

References

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Identifiers

DOI

10.12693/APhysPolA.113.495