Superconductivity and magnetism of bcc Cr-Ru alloys

Y. Nishihara; Y. Yamaguchi; M. Tokumoto; K. Takeda; K. Fukamichi

doi:10.1103/PhysRevB.34.3446

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Superconductivity and magnetism of bcc Cr-Ru alloys

Y. Nishihara, Y. Yamaguchi, M. Tokumoto, K. Takeda, K. Fukamichi

DOI 10.1103/PhysRevB.34.3446 · Physical Review B

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Abstract

The superconducting and magnetic properties of bcc Cr-Ru alloys with between 14 and 25 at.% Ru were studied via measurements of electrical resistivity, specific heat, and magnetic susceptibility. The temperature dependence of the specific heat revealed that bcc Cr-Ru alloys with a concentration higher than ∼17 at.% Ru exhibit superconductivity below ∼2 K. The magnetic susceptibility of these alloys shows a peak around 170 K. The present result suggests that superconductivity coexists with itinerant-electron antiferromagnetism in bcc Cr-Ru alloys.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Cr75Ru25 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	1.87	Pressure unresolved	midpoint
Cr75Ru25 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	2.4	Pressure unresolved	zero_resistance
Cr3Ru Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	3.25	Pressure unresolved	midpoint
Cr3Ru Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	3.3	Pressure not reported	unknown