Two step synthesis of TlBa2Ca2Cu3Ox films on Ag substrates by spray pyrolysis of metal-acetylacetonates

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Título :	Two step synthesis of TlBa2Ca2Cu3Ox films on Ag substrates by spray pyrolysis of metal-acetylacetonates
Palabras clave :	Superconductors Thin films Spray Pyrolysis.
Fecha de publicación :	16-ene-2013
Editorial :	REVISTA MEXICANA DE FISICA
Descripción :	A two-step synthesis process was performed to obtain TlBa2Ca2Cu3Ox (Tl-1223) superconductor films. The synthesized films were obtainedunder different thallium diffusion conditions in a two-zone furnace precursor films were deposited at 550±C on silver substrates using the spray pyrolysis technique from acetylacetonates (2, 4-pentanedionates) as reagents. Second, a thallium diffusion process is carried out to incorporate Tl in the films. For this task Tl2O3 pellets, as a Tl source, were used at 750±C. Different oxygen flow rates at atmospheric pressure were used in order to get the thallous oxide p(Tl2O) partial pressure in the range of 6:9£10¡4 to 6:1£10¡2 atm. The Tl-1223 phase was obtained in all cases, though for a low p(Tl2O), the films presented the BaCuO2 phase mixed with the Tl-1223 one. Critical temperature (TC) values for these films were in the range of 90 to 102 K. INVESTIGACION INSTITUTO POLITECNICO NACIONAL
URI :	http://www.repositoriodigital.ipn.mx/handle/123456789/11483
Otros identificadores :	Rev. Mex. Fıs. 54 (6) (2008) 446–450 http://hdl.handle.net/123456789/1029
Aparece en las colecciones:	Doctorado

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Fichero	Descripción	Tamaño	Formato
TWO STEP SYNTHESIS OF TlBa2Ca2Cu3OX FILMS ON Ag SUBSTRATES BY SPRAY PYROLYSIS OF METAL- ACETYLACETONATES.pdf		40.19 kB	Adobe PDF	Visualizar/Abrir

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