Artículos de revistas
Development on polymeric precursor routes to produce superconducting nanoparticles
Fecha
2007-09-01Registro en:
Physica C-superconductivity and Its Applications. Amsterdam: Elsevier B.V., v. 460, p. 1351-1352, 2007.
0921-4534
10.1016/j.physc.2007.04.021
WOS:000249870600301
1353862414532005
1802982806436894
0000-0002-7734-4069
Autor
Universidade Estadual Paulista (Unesp)
Institución
Resumen
The well-known polymeric precursor route is a simple and low-cost sol-gel method based on the preparation of an aqueous precursor solution of metals followed by the addition of a water-soluble polymer. This method consists of a polyesterification process between a metal chelate complex by using a hydroxycarboxylic acid and a polyhydroxy alcohol. In this work, citric acid (CA), tartaric acid (TA) and ethylenediaminetetraacetic acid (EDTA) are used as the hydroxycarboxylic acid and ethylene glycol (EG) is used as the polyhydroxy alcohol. The effects of the precursor pH solution, time and temperature of polymerization step as well as the combination of different chelating agents in order to obtain nanoscopic YBa2Cu3Oy samples were traced. (c) 2007 Elsevier B.V. All rights reserved.