Accession Number:

ADA252010

Title:

Enhanced Superconductors

Descriptive Note:

Final rept.,

Corporate Author:

CHRONOS RESEARCH LABS INC SAN DIEGO CA

Personal Author(s):

Report Date:

1992-05-01

Pagination or Media Count:

113.0

Abstract:

One of the major challenges facing high temperature superconductors is the making of non-brittle materials. Based on the successful discovery of high temperature perovskite superconductors, a new class of superconducting materials is hypothesized. The proposed class will be mechanically tough and may have high critical temperatures. The proposed material will be inexpensive to manufacture and easily formed into wires and bands. The projects research goal was to detect a superconducting transition in a specific material within this proposed new class. Substantial progress was made toward this objective. In Phase I a major milestone, the bulk conversion of a precursor material, was successfully accomplished. The second model precursor polymer, Polychlorofluoroethylene PCFE, was synthesized for this study. This allowed the possibility of making low defect polyfluoroacetylene. This synthesis route yielded polyfluoroacetylene with a significantly lower defect density when compared to HF-eliminated fluoropolymer films. The final phase of this work was directed to synthesis of poly2,3,5,6-tetrafluoro-para-phenylene vinylene PTFPPV. While making significant progress in synthesizing conducting polymers with polar or polarizable groups, this study did not reach its ultimate goal of producing a model compound with all of the necessary chemical properties to test the exciton model of superconductivity.

Subject Categories:

  • Electrical and Electronic Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE