August 2009

Conference Paper

A Modular Ex Situ Conversion Process for Thick MOD-Fluoride RBCO Precursors

By:
Feenstra, Roeland ; List III, Frederick A; Li, Xiaoping; Rupich, Marty; Miller, D.; Maroni, Victor; Zhang, Yifei ; Thompson, James R; Christen, David K
Journal Name:
IEEE Transactions on Applied Superconductivity
Page Number:
3131-3135
Volume:
19
Issue Number:
3
Publication Date:
August 2009
Conference Name:
2008 Applied Superconductivity Conference
Conference Location:
Chicago, Illinois, United States of America
View DOI Listing:
https://doi.org/10.1109/TASC.2009.2019215

Abstract

Following a review of heating induced chemical and structural changes in RBa2Cu3O7 (RBCO) fluoride precursors (R= rare earth of Y) deposited by metalorganic (MOD) and physical vapor deposition (PVD), a modular process comprising successive, functionally distinct, brief annealing steps (modules) is introduced. By decoupling events that otherwise occur simultaneously, the modular process provides a framework for addressing the complex kinetics associated with the temperature ramp of the ex situ conversion anneal. Modules for modifying the F concentration, porosity and microstructure, and RBCO nucleation are described.


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