Conveners
M2Or4B - Growth & Characterization of REBCO and Iron-based Superconductors
- Eric Hellstrom
- Takanobu Kiss
The fluorine-free metal organic decomposition (FF-MOD) method is considered to be the lowest cost one for mass production of REBCO thin films among various methods such as Pulsed-Laser-Deposition (PLD), Metal-Organic-Chemical-Vapor-Deposition (MOCVD), trifluoroacetate (TFA)-MOD and Reactive Co-Evaporation by Deposition & Reaction (RCE-DR). Fast crystal growth of REBCO via simple reaction, flat...
In a recent study in probing the effect of the pinning efficiency of BaZrO3 (BZO) nanorods in BZO-doped YBa2Cu3O7-x (BZO/YBCO) nanocomposite films, Ca diffusion from two Ca0.3Y0.7Ba2Cu3O7-x spacers that form multilayers through alternative stacking with three BZO/YBCO layers was found to significantly enhance the pinning by approximately five folds at high fields up to 9.0 T. This raises a...
Oxygen overdosing may be a way to further increase the critical current density of coated conductors. It has recently been shown that overdosing of of YBCO thin film coated with an Ag layer was achieved by processing at low temperature and 1 bar oxygen pressure, which allowed increasing the charge carrier density and achieving whatever high critical current 90 MA•cm−2 at 5 K, which corresponds...
Superconductivity in iron-based materials is an active area of research due to the unconventional nature of the electron-electron interactions. The simplest material in this family is the layered 11 type iron chalcogenides. Iron selenide(FeSe) when alloyed with tellurium(Te) can alter many superconducting properties. The layered nature of this material allows for unique interactions with other...
Driven by their exceptional superconducting performance at high fields, iron-based superconductors have been the focus of sustained efforts toward practical applications. However, challenges persist in fabricating high-performance iron-based superconducting long wires and tapes fabricated by the powder-in-tube method. Recent studies have identified key factors limiting the current-carrying...
