Application of the Single-Dose Assay Technique to Psittacosis

Riley, Jean M.; Campbell, Jr. J.P.; E., Orlando William; D., Shirey Michael; N., Dorsey William; Warren, G.

doi:10.21236/ad0809120

Cited by 1 publication

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“…The motivation for this paper is therefore to address a long-standing conundrum: why is high J c possible in round wire Bi2212 but not in round wires of its close sibling Bi2223 [31]. To perform the study, we used Electron Backscatter Diffraction Orientation Imaging Microscopy (EBSD-OIM) to reveal the texture of state-of-the-art high J c Bi2223 tape and overpressure processed round wire Bi2212.…”

Section: Introduction Tomentioning

confidence: 99%

Comparison of growth texture in round Bi2212 and flat Bi2223 wires and its relation to high critical current density development

Kametani

Jiang

Matras

et al. 2015

Sci Rep

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Why Bi2Sr2CaCu2Ox (Bi2212) allows high critical current density Jc in round wires rather than only in the anisotropic tape form demanded by all other high temperature superconductors is important for future magnet applications. Here we compare the local texture of state-of-the-art Bi2212 and Bi2223 ((Bi,Pb)2Sr2Ca2Cu3O10), finding that round wire Bi2212 generates a dominant a-axis growth texture that also enforces a local biaxial texture (FWHM <15°) while simultaneously allowing the c-axes of its polycrystals to rotate azimuthally along and about the filament axis so as to generate macroscopically isotropic behavior. By contrast Bi2223 shows only a uniaxial (FWHM <15°) c-axis texture perpendicular to the tape plane without any in-plane texture. Consistent with these observations, a marked, field-increasing, field-decreasing Jc(H) hysteresis characteristic of weak-linked systems appears in Bi2223 but is absent in Bi2212 round wire. Growth-induced texture on cooling from the melt step of the Bi2212 Jc optimization process appears to be the key step in generating this highly desirable microstructure.

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Section: Introduction Tomentioning

confidence: 99%