Anisotropic connectivity and its influence on critical current densities, irreversibility fields, and flux creep in in situ processed MgB2 strands

Superconductor Science and Technology

Volumn 23, Issue 4, 2010, Pages

  Shi, Z X ^a,b   Susner, M A ^a   Majoros, M ^a   Sumption, M D ^a   Peng, X ^a,c   Rindfleisch, M ^c   Tomsic, M J ^c   Collings, E W ^a  

^a The Ohio State University   (United States)

^b SOUTHEAST UNIVERSITY   (China)

^c Hyper Tech Research Inc   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

CRYSTALLINE TEXTURE; ELONGATED PORES; FIBROUS MICROSTRUCTURE; FLUX CREEP; FORMATION REACTION; HIGH QUALITY; IN-SITU; IRREVERSIBILITY FIELDS; LARGE DEVIATIONS; LENGTH SCALE; LOCAL TEXTURE; MAGNETIC TECHNIQUES; MAGNETIZATION MEASUREMENTS; PINNING POTENTIAL; RESISTIVE TRANSITION; SCANNING ELECTRON MICROGRAPHS;

ANISOTROPY; MAGNETIZATION; POLYCRYSTALLINE MATERIALS; SCANNING ELECTRON MICROSCOPY; SINGLE CRYSTALS; STRINGERS; TEXTURES;

CRITICAL CURRENTS;

EID: 77949880347     PISSN: 09532048     EISSN: 13616668     Source Type: Journal    
DOI: 10.1088/0953-2048/23/4/045018     Document Type: Article

References (48)

1. 2 thin films Nature 411 5580560
2. 2 thin films Phys. Rev. B 71 012504
3. 2 superconductor by nanoparticle SiC doping Appl. Phys. Lett. 81 3419-21
4. 2 wires with SiC additions Appl. Phys. Lett. 86 092507
5. Bugoslavsky Y, Cohen L F, Perkins G K, Polichetti M, Tate T J, William R G and Caplin A D 2001 Nature 411 561
6. 2 Phys. Rev. Lett. 90 247002
7. 2 J. Appl. Phys. 98 033906
8. 2: an application of mean-field theory for a site-percolation problem Supercond. Sci. Technol. 20 658-66
9. Collings E W, Sumption M D, Bhatia M, Susner M A and Bohnenstiehl S D 2008 Prospects for improving the intrinsic and extrinsic properties of magnesium diboride superconducting strands Supercond. Sci. Technol. 21 103001
10. 2 Supercond. Sci. Technol. 22 034016
11. Wen H H, Li S L, Zhao Z W, Jin H, Ni Y M, Ren Z A, Che G C and Zhao Z X 2001 Physica C 363 170-8
12. 2 Rare Metal Mater. Eng. 31 406-9
13. 2/Fe strands-transport and magnetic properties Physica C 386 555-9
14. 2 tubular wires IEEE Trans. Appl. Supercond. 17 2761-5
15. 2 manufacts Cryogenics 46 237-42
16. Grant P and Johnston C 2008 Automotive Engineering (Boca Raton, FL: CRC Press) p110 (277 pp)
17. 2 wires by an internal Mg diffusion process Supercond. Sci. Technol. 21 032001
18. Sumption M D 1994 Calculation of the magnetization of anisotropic superconductors with cylindrical geometry in transverse fields Appl. Supercond. 2 41-6
19. 7 analyzed using an extended Bean model Appl. Phys. Lett. 55 283-5
20. Sauerzopf F M, Wiesinger H P and Weber H W 1990 Cryogenics 30 650
21. 2 Solid State Commun. 118 497-501
22. 2 films Phys. Rev. B 70 064503
23. 2 Phys. Rev. B 64 212509
24. 2 and related compounds J. Low Temp. Phys. 131 1153-7
25. Kirkpatrick S 1973 Percolation and conduction Rev. Mod. Phys. 45 574-88
26. Landauer R 1978 Electrical conductivity in inhomogeneous media Electrical Transport and Optical Properties of Inhomgeneous Media (Amer. Inst. Phys. Conf. Proc. vol 40) ed J C Garland and D B Tanner pp2-43
27. Wu J and McLachlin D S 1997 Percolation exponents and thresholds obtained from the nearly ideal continuum percolation system graphite-boron nitride Phys. Rev. B 56 1236-48
28. Webman I, Jortner J and Cohen M H 1975 Numerical simulation of electrical conductivity in microscopically inhomogeneous materials Phys. Rev. B 11 2885-92
29. Heermann D W and Stauffer D 1981 Phase diagram for three-dimensional correlated site-bond percolation Z. Phys. B 44 339-44
30. 2 superconductor textured by hot deformation J. Alloys Compounds 329 285-9
31. 2 crystallites Phys. Rev. Lett. 86 5974-77
32. 2 Braz. J. Phys. 33 709-12
33. 2 thin films Supercond. Sci. Technol. 14 315-9
34. 2 Phys. Rev. B 64 180506(R)
35. 2 addition Appl. Phys. Lett. 87 042505
36. 2 formed below and above Mg's melting point IEEE Trans. Appl. Supercond. 17 2750-3
37. 2 Appl. Phys. Lett. 81 4577-9
38. 2 superconductor Solid State Commun. 146 330-4
39. Yamada H et al 2004 Flux pinning properties of c-axis correlated pinning centres in PLD-YBCO films Supercond. Sci. Technol. 17 S25-9
40. c superconductors Japan. J. Appl. Phys. 28 L1906-8
41. Yamafuji K, Fujiyoshi T, Toko K and Matsushita T 1989 A theory of thermally activated flux creep in nonideal type II superconductors Physica C 159 743-99
42. 7 - x Phys. Rev. B 42 2639-42
43. Welch D O 1991 A theoretical comparison of the effects of the shape of the pinning potential and a distribution of pinning energies on the apparent pinning energy as measured by magnetic flux creep IEEE Trans. Magn. 27 1133-8
44. Ekin J W 1987 Irregularity in NbTi filament area and electric field versus current characteristics Cryogenics 27 603-7
45. 2 thin films Phys. Rev. Lett. 87 087002
46. 2 superconductors Phys. Rev. B 65 020503(R)
47. 2 near the melting curve Semicond. Sci. Technol. 15 619-23
48. 2 superconductors J. Appl. Phys. 105 103916