The resistance of the nonstoichiometric compounds YBa2Cu3O6.8 (single crystals, ceramics) and YBa2Cu3O6.8(Ce) (single crystal) to low-temperature decomposition (at 200°C) in air and an argon...
1 October 2010 in Physics of Metals and Metallography
The fine structure and electrophysical properties of nonstoichiometric YBa2Cu3O7 − δ ceramics and the effect of low-temperature annealing ( t⩾ 200°C) in various atmospheres on these parameters have...
25 February 2014 in Physics of Metals and Metallography
Using different methods, it has been revealed that two MgB2phases with the same hexagonal lattice, which differ in the contents of Mg and B (in the limits of the homogeneity range), as well as in...
24 June 2014 in Physics of Metals and Metallography
The core of a single-core MgB2/Cu,Nb composite, which has been prepared by the ex-situ technique and exhibits a high critical current equal to 427 A (at 0 T and 4.2 K, jc ≥ 105 A/cm2), has been...
The structure of MgB2samples synthesized from magnesium flakes and a boron powder at temperatures of 900–1000°C has been investigated. It has been found that the samples have “dendrite-like” and...