Negative Magnetisation and Absence of Superconductivity in RFe_4Al_8 (R=Lu, Yb) Compounds

• Authors: B Andrzejewski , A Kowalczyk , T Toliński
• Languages of publication: EN

Abstracts

EN

We report researches for superconductivity and the effect of negative magnetisation in the RFe_4Al_8 (R = Lu, Yb) compounds by means of magnetic measurements and microwave absorption. Contrary to the earlier reports we do not confirm the existence of any traces of superconductivity in these compounds. Instead of the superconductivity and the Meissner effect, the YbFe_4Al_8 compound exhibits the effect of negative magnetisation, whereas the LuFe_4Al_8 compound shows an exact antiferromagnetic behaviour.

Keywords

EN

74.70.Dd; 75.50.-y; 75.50.Ee; 51.60.+a; 74.70.-b

Discipline

• 75.50.-y: Studies of specific magnetic materials
• 75.50.Ee: Antiferromagnetics
• 74.70.-b: Superconducting materials other than cuprates(for cuprates, see 74.72.-h; for superconducting films, see 74.78.-w)
• 51.60.+a: Magnetic properties
• 74.70.Dd: Ternary, quaternary, and multinary compounds (including Chevrel phases, borocarbides, etc.)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2006
• Volume: 109
• Issue: 4-5
• Pages: 561-564

Dates

published

2006-04

received

2005-09-25

Contributors

author

B Andrzejewski

• Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179, Poznań, Poland

author

A Kowalczyk

• Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179, Poznań, Poland

author

T Toliński

• Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179, Poznań, Poland

References

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Identifiers

DOI

10.12693/APhysPolA.109.561