BSCCOBismuth Strontium Calcium Copper Oxide
BSCCOBalancing and Settlement Code Company (UK)
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The experimental results also show that using BSCCO tape can achieve a lower turn-to-turn contact resistance.
FMs have been used to improve the performance of BSCCO tape by covering its edges [5] and HTS cable by covering the gap between the tapes as a diverter [6].
The properties of the YBCO and BSCCO were determined experimentally and the data were entered into OPERA.
These materials can be processed in tape form using thin-film deposition methods, potentially reducing the costs associated with the rather complex powder-in-silver tube process used for BSCCO. One of the most promising YBCO coated conductor processing routes is the fabrication of B a[F.sub.2]-containing precursor films which are then converted to oxide superconductor through reaction with water-vapor.
HTS tape parameters Transformer parameters HTS tape BSCCO Structure type Solenoid Tape width 4.3 mm Maximal terminal 800 V voltage Tape thickness 0.3 mm Critical current 40 A Critical current 100 A Primary/secondary 9.7 mH/32.3 mH inductance Bending stress <50 mm Inner/outer diameter 88 mm/154 mm Tensile stress >100 Mpa Coupling factor 0.83 TABLE 2: Specifications of the AC/DC power converter.
The Ba-R-Cu-O materials are relatively more isotropic when compared with Bi(Pb)-Sr-Ca-Cu-O (BSCCO)-based superconductors, and can retain current carrying ability at liquid nitrogen temperature under high magnetic fields.
These matericals are generically known as BSCCO (pronounced bisco).
With the 1986 discovery at IBM Zurich, new bismuth strontium calcium copper oxide (BSCCO, or "bis-ko" in physics slang) materials were found to superconduct at 77K, a much higher [T.sub.c], its critical temperature for superconductivity.
Schwenterly built a table-top superconducting motor using a BSCCO ([Bi.sub.2][Sr.sub.2] [Ca.sub.2][Cu.sub.3][O.sub.10]) superconducting coil supplied by ASC and parts from a hobby shop and hardware store.
As has been noted in [10], typical high [T.sub.c] superconductors (such as BSCCO) do exhibit hyperbolic metamaterial behavior in a substantial portion of far infrared and THz frequency ranges.
A more radical departure from traditional motor designs is the new breed that uses superconductive materials - such as the ceramic material known as BSCCO (bismuth, strontium, calcium, and copper oxide).