This paper describes a variation of the oxalate procedure that has significant advantages. The oxalate approach is often used to produce rare earth 123 superconductors and related ceramics. A moderately high concentration of acetone changes the dielectric character of the solution significantly and in the process greatly modifies the solubility of the oxalate compounds. / When oxalic acid or oxalate ions are added to a yttrium-barium-copper aqueous solution, significant amounts of the metal (typically 10-40% of either Cu or Ba depending upon the pH) are left in solution. Such losses result in poor quality material. The acetone makes the precipitation more than 99+% complete. The oxalate precursor thus produced by this route fires to high quality superconductors in amazingly short periods of time. / Source: Dissertation Abstracts International, Volume: 53-10, Section: B, page: 5175. / Major Professor: Ronald J. Clark. / Thesis (Ph.D.)--The Florida State University, 1992.
| Identifer | oai:union.ndltd.org:fsu.edu/oai:fsu.digital.flvc.org:fsu_76784 |
| Contributors | Skirius, Stephen Anthony., Florida State University |
| Source Sets | Florida State University |
| Language | English |
| Detected Language | English |
| Type | Text |
| Format | 109 p. |
| Rights | On campus use only. |
| Relation | Dissertation Abstracts International |
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