Phase separation in carbon-doped MgB2 superconductors

I. Maurin, S. Margadonna, K. Prassides, T. Takenobu, T. Ito, D. H. Chi, Y. Iwasa, A. Fitch

研究成果: Article

31 引用 (Scopus)

抄録

High-resolution synchrotron X-ray powder diffraction measurements have been carried out on superconducting MgB2-xCx (0 ≤ x ≤ 0.1) phases. The carbon miscibility in the hexagonal AlB2-type structure is very small, x < 0.04. At higher carbon contents, macroscopic phase separation occurs leading to the coexistence of at least two phases, isostructural with the parent MgB2 compound. The coexisting phases differ mainly in their in-plane lattice constants, suggesting that boron is substituted by carbon in the boron layers, but in different concentrations. The multiphase samples still show a clear one-step superconducting transition and full shielding, χ = -1/4π.

元の言語English
ページ(範囲)392-397
ページ数6
ジャーナルPhysica B: Condensed Matter
318
発行部数4
DOI
出版物ステータスPublished - 2002 6
外部発表Yes

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Phase separation
Superconducting materials
Boron
Carbon
carbon
boron
Synchrotrons
Shielding
X ray powder diffraction
Lattice constants
shielding
synchrotrons
solubility
Solubility
high resolution
diffraction
x rays

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

これを引用

Maurin, I., Margadonna, S., Prassides, K., Takenobu, T., Ito, T., Chi, D. H., ... Fitch, A. (2002). Phase separation in carbon-doped MgB2 superconductors. Physica B: Condensed Matter, 318(4), 392-397. https://doi.org/10.1016/S0921-4526(02)00811-6

Phase separation in carbon-doped MgB2 superconductors. / Maurin, I.; Margadonna, S.; Prassides, K.; Takenobu, T.; Ito, T.; Chi, D. H.; Iwasa, Y.; Fitch, A.

:: Physica B: Condensed Matter, 巻 318, 番号 4, 06.2002, p. 392-397.

研究成果: Article

Maurin, I, Margadonna, S, Prassides, K, Takenobu, T, Ito, T, Chi, DH, Iwasa, Y & Fitch, A 2002, 'Phase separation in carbon-doped MgB2 superconductors', Physica B: Condensed Matter, 巻. 318, 番号 4, pp. 392-397. https://doi.org/10.1016/S0921-4526(02)00811-6
Maurin I, Margadonna S, Prassides K, Takenobu T, Ito T, Chi DH その他. Phase separation in carbon-doped MgB2 superconductors. Physica B: Condensed Matter. 2002 6;318(4):392-397. https://doi.org/10.1016/S0921-4526(02)00811-6
Maurin, I. ; Margadonna, S. ; Prassides, K. ; Takenobu, T. ; Ito, T. ; Chi, D. H. ; Iwasa, Y. ; Fitch, A. / Phase separation in carbon-doped MgB2 superconductors. :: Physica B: Condensed Matter. 2002 ; 巻 318, 番号 4. pp. 392-397.
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