Impedance and specific heat of RM4Al8 and RAg6In6 compounds

Autor:	V. Suski, N. N. Prentslau, V. M. Dmitriev, A. M. Gurevich, L. V. Shlyk, A. V. Terekhov, V. N. Eropkin, B. Yu. Kotur
Rok vydání:	2001
Předmět:	Superconductivity Surface conductivity Materials science Physics and Astronomy (miscellaneous) Condensed matter physics Magnetoresistance Analytical chemistry General Physics and Astronomy Ternary operation Néel temperature Type-II superconductor Sheet resistance Magnetic field
Zdroj:	Low Temperature Physics. 27:967-973
ISSN:	1090-6517 1063-777X
DOI:	10.1063/1.1421464
Popis:	The results of experimental investigations of the temperature dependences of the surface resistance and specific heat of ternary rare-earth compounds are presented: LuFe4Al8, ScFe4Al8, CeFe4Al8, CeCr4Al8, YFe4Al8, YCr4Al8, YMn4Al8, UCu4Al8, LaAg6In6, and PrAg6In6, which have ThMn12 structure. It is shown that at a certain temperature, characteristic for each compound with Fe, Cr, and Mn, below the Neel temperature a jump is observed in the total impedance and specific heat. At lower temperatures a negative magnetoresistance is observed in these compounds in weak magnetic fields. Superconducting phases are found in the compounds ScFe4Al8 (Tc=6 K), YCr4Al8 (Tc=4.5 K), YFe4Al8 (Tc=6 K), and PrAg6In6 (Tc=8.3 K).
Databáze:	OpenAIRE
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