High magnetic field properties of UAl4

Leyarovski, E.; Leyarovska, L.; Suski, W.; Iliev, N.

doi:10.1016/0022-5088(86)90587-4

Cited by 2 publications

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“…The absence of metal deficiency was also supported by the band calculation [3,4]. Although they are very important materials for applications because of their high melting-temperature and hardness, they did not show superconductivity down to 0.26 K [13].…”

Section: Comparison With Other Metal Diborides Mbmentioning

confidence: 72%

“…In those days, the results were discussed based on so-called Matthias's rule [12], which states that superconductivity is enhanced when an averaged valence deviate from integer. On the other hand, superconductivity in stoichiometric NbB 2 was reported by Leyarovska [13] in 1957, though the T c was only 0.62 K. In their study, superconductivity was not observed in MB 2 (M = Ti, Zr, Hf, V, Ta, Cr and Mo) down to 0.42 K [13].…”

Section: Introductionmentioning

confidence: 71%

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High-pressure synthesis of superconducting Nb1−xB2 (x=0–0.48) with the maximum Tc=9.2 K

Yamamoto

Takao

Masui

et al. 2002

Physica C: Superconductivity

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Superconductivity with T c above 9 K was found in metal-deficient NbB 2 prepared under 5 GPa, while no clear superconductivity was observed down to 3 K in stoichiometric NbB 2 . The superconductivity was observed above x = 0.04 in Nb 1-x B 2 . and the lattice parameters also changed abruptly at x = 0.04. As x increased, the transition temperature T c slightly rose and fell with the maximum value of 9.2 K at x = 0.24 for the samples sintered at 5 GPa and 1200 ˚C. The T c -value changed in the range from 7 K to 9 K, depending on the sintering pressure. A series of Ta 1-x B 2 (0 £ x £ 0.24) was also synthesized under high pressure to examine a special effect of high-pressure synthesis.PACS numbers: 74.62 Bf, 74.25.Fy

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Section: Comparison With Other Metal Diborides Mbmentioning

confidence: 72%