Abstract
The effect of hydrostatic pressure on the superconductivity of La1.2−x Eu x Mo6S8 pseudoternary compounds was studied by means of low-frequency ac and dc magnetic susceptibility measurements up to 20 kbar. The superconducting transition temperatureT c at ambient pressure is a weak function of Eu concentrationx for 0≲x≲0.2, and then decreases smoothly withx forx>0.2 until superconductivity is completely suppressed forx≥0.95. Pressure was found to decreaseT c in the La-rich compounds and to increaseT c in the Eu-rich compounds. Pressure also induces superconductivity in compounds withx>0.95 that are not superconducting at ambient pressure. A La0.2Eu1.0Mo6S8 compound revealed a sizeable Meissner effect for pressures larger than 7 kbar.
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Research supported by the U.S. Department of Energy under contract DE-AT03-76ER70227.
On leave from Instituto de Fisica “Gleb Wataghin”, UNICAMP, Brazil.
Research supported by the National Science Foundation under grant DMR81-09950.
Supported by the National Science Foundation.
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Torikachvili, M.S., Maple, M.B., Guertin, R.P. et al. Hydrostatic pressure effects on the superconductivity of La1.2−x Eu x Mo6S8 pseudoternary compounds. J Low Temp Phys 49, 573–584 (1982). https://doi.org/10.1007/BF00681902
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DOI: https://doi.org/10.1007/BF00681902