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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2001, Volume 74, Issue 5, Pages 304–308
(Mi jetpl4205)
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This article is cited in 10 scientific papers (total in 10 papers)
CONDENSED MATTER
Nonstoichiometry and critical temperature of MgB$_2$
M. V. Indenbom, L. S. Uspenskaya, M. P. Kulakov, I. K. Bdikin, S. A. Zver'kov Institute of Solid State Physics, Russian Academy of Sciences
Abstract:
The influence of nonstoichiometry of the new high-temperature superconductor MgB$_2$ on its critical temperature was studied by the direct magnetooptical observations of the penetration and trapping of magnetic flux. To preclude the possible influence of accidental factors, a special sample with transition from pure boron to the MgB$_2$ with an excess of Mg was synthesized. In a narrow region near the unreacted boron, the magnetic-field trapping and screening disappear at a temperature $1.5$ K higher than in the dominant stoichiometric region of the sample.
Received: 01.08.2001
Citation:
M. V. Indenbom, L. S. Uspenskaya, M. P. Kulakov, I. K. Bdikin, S. A. Zver'kov, “Nonstoichiometry and critical temperature of MgB$_2$”, Pis'ma v Zh. Èksper. Teoret. Fiz., 74:5 (2001), 304–308; JETP Letters, 74:5 (2001), 274–278
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https://www.mathnet.ru/eng/jetpl4205 https://www.mathnet.ru/eng/jetpl/v74/i5/p304
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Abstract page: | 114 | Full-text PDF : | 43 | References: | 1 |
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