8 research outputs found
Crystal growth and characterization of MgB2: Relation between structure and superconducting properties
Full text linkWe discuss the important aspects of synthesis and crystal growth of MgB2
under high pressure (P) and temperature (T) in Mg-B-N system, including the
optimisation of P-T conditions for reproducible crystal growth, the role of
liquid phases in this process, the temperature dependence of crystal size and
the effect of growing instabilities on single crystals morphology. Extensive
experiments have been carried out on single crystals with slightly different
lattice constants and defects concentration, which revealed and possible
effects of Mg-deficiency and lattice strain on the superconducting properties
of MgB2 (Tc, Jc, residual resistivity ratio, anisotropy etc.).Comment: 29 pages, 9 figures, 1 table, Proc.of International Workshop on
Superconductivity in Magnesium Diboride and Related Materials "BOROMAG",
17-19 June 2002, Genoa, Italy (submitted to Supercond.Sci and Technol.
Suggestive and counter suggestive speech functions in russian language teaching process
No full textThe article deals with the role of suggestive and counter-suggestive functions of speech in the process of oral communication. Teaching methods containing elements of suggestion are considered as suggestive means. Their usage in the teaching process makes this process more efficient. The teacher’s awareness of the counter-suggestion mechanism helps him to overcome misunderstanding in the recipient’s consciousness during the teaching process
Mechanism of Cubic Boron Nitride Formation and Phase Equilibria in the Mg—BN and AlN—BN Systems
No full textInfluences of carbon concentration on crystal structures and ideal strengths of B2CxO compounds in the B-C-O system
No full text
