Effect of B11 substitution on the superconductivity of MgCNi3
T. Klimczuk, M. Avdeev, J. D. Jorgensen, R. J. Cava
DOI 10.1103/PhysRevB.71.184512 · Physical Review B
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Abstract
The crystal structure of boron-doped superconducting MgC1−xBx11Ni3, studied by powder neutron diffraction, is reported. The solubility limit of boron is determined to be approximately x=0.16. The unit cell expands from a=3.81089(2)Åto3.81966(2)Å as x increases from x=0 to x=0.155. Boron (B11) doping decreases Tc with increasing x: from 7.09K (x=0) to 6.44K (x=0.155).
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| MgCNi3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 7.09 | Pressure not reported | onset |
| MgC0.78B0.155Ni3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 6.44 | Pressure not reported | onset |
| MgB2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 39 | Pressure not reported | unknown |
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