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Flux exclusion

Magnetic flux exclusion effects W. Meissner/R. Ochsenfeld... [Pg.9]

Single crystals of the 2201 phase were grown from a starting composition 2 2 2 (Tl Ba Cu) (7) presumably the mixture was heated to 900°C, soaked several h, and slow-cooled. Flux exclusion indicated a Tc onset of 90 K with zero resistance at 83 K. [Pg.278]

Single crystals of the 1223 thallium monolayer phase were grown from a copper-rich melt with molar composition 1 2 2 4 (Tl Ba Ca Cu) the mixture was heated to 925°C, soaked 6 h, and cooled at l°C/min (57). Magnetic flux exclusion experiments indicated a sharp Tc onset of 110 K. [Pg.278]

Figure 19 (a) HREM image of (Tl,Pb)Sr2Ca2Cu309showing a 4-layer intergrowth (arrowed), (b) SADP in [010]. (c) [001] SADP with no superstructure spots, indicating that structural modulations are not present, (d) EDX spectrum showing the presence of H and Pb. Quantification is shown in Table 3. (e) Flux exclusion behavior for n=2 and n=3.. ... [Pg.598]

Figure 4 Flux exclusion (shielding) versus increasing temperature (solid triangles) and flux expulsion (Meissner effect) versus decreasing temperature (open triangles) in a 25 Oe external field for a superconducting YE Cu Oy.g single crystal. Exclusion and expulsion are equal for temperatures above the irreversibility point Tjrr (w90.5 K at 25 Oe) Tc is 92 K. Figure 4 Flux exclusion (shielding) versus increasing temperature (solid triangles) and flux expulsion (Meissner effect) versus decreasing temperature (open triangles) in a 25 Oe external field for a superconducting YE Cu Oy.g single crystal. Exclusion and expulsion are equal for temperatures above the irreversibility point Tjrr (w90.5 K at 25 Oe) Tc is 92 K.
Figure 5 Flux exclusion and flux expulsion at 10 K versus... Figure 5 Flux exclusion and flux expulsion at 10 K versus...
Figure 6 Ratio of flux exclusion to flux expulsion at 10 K... Figure 6 Ratio of flux exclusion to flux expulsion at 10 K...
Typical examples are solid catalyzed reactions or wall reactions occurring in free radical chemistry. Usually reacting surfaces are covered by a boundary layer of the fluid. Then, if is of no surprise fhat the fluxes can be expressed in terms of the diffusive fluxes exclusively. In any mass balance, we usually have mass fluxes expressed in terms of V N,. From standard definitions (Bird etal, 2002, p. 537) ... [Pg.130]


See other pages where Flux exclusion is mentioned: [Pg.1147]    [Pg.279]    [Pg.291]    [Pg.578]    [Pg.580]    [Pg.600]    [Pg.632]    [Pg.681]    [Pg.685]    [Pg.687]    [Pg.687]    [Pg.687]    [Pg.687]    [Pg.705]    [Pg.798]    [Pg.799]    [Pg.213]    [Pg.495]    [Pg.796]    [Pg.323]    [Pg.122]    [Pg.141]    [Pg.322]    [Pg.334]    [Pg.115]    [Pg.1176]   
See also in sourсe #XX -- [ Pg.495 , Pg.796 ]

See also in sourсe #XX -- [ Pg.323 ]




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