The Discovery of Type II Superconductors Part 1 pdf

... [Ar]3d 10 4s 1 +I, +II, +III Fe [Ar]3d 6 4s 2 +II, +III, +IV, +V Nb [Kr]4d 3 5s 2 +III, +V Pb [Xe]4f 14 5d 10 6s 2 6p 2 +II, +IV Ti [Ar]3d 2 4s 2 +II, +III, +IV Tl [Xe]4f 14 5d 10 6s 2 6p 1 ... ions. For the other elements in Table 3, we have considered the following stable oxidation states: La(+III), Y(+III), Ba( +II) , Sr( +II) , Bi(+III), Ca( +II) , Tl(+III), H...

Ngày tải lên: 21/06/2014, 05:20

... reversible, the hysteresis rather small. 5. The difference in free energy of magnetized and normal superconductors was given by the area of the curve: ΔF = ∫МdH, The Discovery of Type II Superconductors ... superconductivity, the experimental side of the discovery of these superconductors, as far as the author knows, having been discussed only fragmen...

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... (Figs. 1e, f and g). We have prepared the p -type self-assembled Si-QWs with different density of holes (10 9 10 12 cm -2 ) on the Si (10 0) wafers of the n -type within frameworks of the conception ... p -type Si- QW - δ-barrier, on the n -type Si (10 0) surface. The MAR processes are of interest to be measured in the regime of coherent tunneling (Eisenst...

Ngày tải lên: 21/06/2014, 05:20

... Materials, 19 (10 ): 13 73 -13 76. Superconducting Properties of Carbonaceous Chemical Doped MgB 2 12 1 Fig. 11 . SEM images of MgB 2 (a), Mg 1. 15 B 2 (b), MgB 2 +10 wt % SiC (c), Mg 1. 15 B 2 +10 ... Physical Review B, 71( 1): 012 504. Buzea, C. & Yamashita, T. (20 01) . Review of the superconducting properties of MgB 2 . Superconductor Science & Tech...

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... 6x10 15 76.3 92.7 0 .10 0 1x10 16 < ;10 .0 - 0.055 Bi-2223: 0 11 2.0 12 2.0 0 .10 0 1x10 15 11 1.0 12 2.0 0 .10 0 2x10 15 10 8.0 12 2.0 0 .10 0 3x10 15 10 5.8 12 1.8 0 .10 0 4x10 15 10 3.6 12 1.6 ... dose of ~6x10 15 α/cm 2 and the equivalent oxygen content is 0 .10 . Fig. 3. (a) Resistivity of unirradiated, 6x10 15 α/cm 2 and (b)...

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... of vacancies per vacancy cluster) C (ppm) Bi-2 212 Unirradiated 2 2.63 1x10 15 2 2.57 2x10 15 2 1. 76 5x10 15 3 1. 06 8x10 15 1 4.26 1x10 16 1 6.37 Bi-2223 Unirradiated 1 5 .10 1x10 15 ... 1 5 .10 1x10 15 1 5.25 2x10 15 1 5.25 5x10 15 1 5.30 8x10 15 1 5.45 1x10 16 1 5.55 Table II. Defect Size (N) and Concentration ( C)...

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... V 211 is the RE- 211 volume fraction and d 211 is the average size of the RE- 211 particles (Murakami 19 91) , Sandiumenge et al., 19 97). According to another model, this dependence is V 211 /√d 211 . ... under 1% partial pressure of O 2 . Note the uniform dispersion of fine 211 inclusions in the NEG -12 3 matrix. In such models the critical current density i...

Ngày tải lên: 21/06/2014, 05:20

... with 35 mol% Gd- 211 (the initial average particle size 70 nm) and 0 .1 mol% Nb 2 O 5 the arrows point to some of the smallest, Nb-based, nanoparticles. The small Gd- 211 nanoparticles (≈20 nm) ... MoO 3 nanoparticles. Figure 11 shows the temperature dependence of the dc magnetic susceptibility in the ZFC and FC modes in magnetic field of 1 mT for NEG -12 3 + 35 m...

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... 21 (2008) 11 5 017 Synthesis and Thermophysical Characterization of Bismuth based High-T c Superconductors 259 80 10 0 12 0 14 0 16 0 18 0 0 10 20 30 40 50 60 Figure of Merit (Z x10 -6 K -1 ) Temperature ... to the improved sharpness of the transition related to the reduction of 50 10 0 15 0 200 250 300 0.6 0.8 1. 0 1. 2 1. 4 1. 6 1. 8 2.0 2.2 2....

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... patterns, 18 diffraction peaks are observed at 2θ= 22. 81, 27. 71, 27. 91, 30. 61, 32. 51, 32. 81, 38. 51, 40. 31, 46. 51, 47. 51, 51. 41, 52. 51, 54. 91, 58. 21, 58. 71, 62. 71, 68 .11 and 68. 71, corresponding to the ... (030), (12 0), (0 21) , (040), (13 0), (0 31) , (050), (13 1), (200), (002), (15 1), (16 0), (070), (16 1), (13 2), (2 41) , (260), and (0 81) planes of orthorhomb...

Ngày tải lên: 21/06/2014, 05:20