Effect of Ba-Ca-Cu precursor matrix on the formation and properties of superconducting Tl2Ba2Can-1CunOx films - A combined metalorganic chemical vapour deposition and thallium vapour diffusion approach

被引：20

作者：

Malandrino, G

Condorelli, GG

Lanza, G

Fragala, IL

diUccio, US

Valentino, M

机构：

[1] UNIV CATANIA, DIPARTIMENTO SCI CHIM, I-95125 CATANIA, ITALY

[2] UNIV NAPLES, DIPARTIMENTO SCI FIS, I-80125 NAPLES, ITALY

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 1997年 / 251卷 / 1-2期

关键词：

superconducting thin films; precursor matrix; thallium vapour diffusion;

D O I：

10.1016/S0925-8388(96)02694-1

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Superconducting thin films of the Tl2Ba2CaCu2Ox (2212) and Tl2Ba2Ca2Cu3Ox (2223) phases have been prepared through a vapour diffusion. The effects due to the nature of the BaCaCuO(F) precursor matrix on the formation of the TlBaCaCuO phase film have been investigated. Fluorinated [BaCaCuO(F)] matrices have been deposited from Ba(hfa)(2) . tetraglyme, Ca(hfa)(2) . tetraglyme and Cu(acac)(2) via metalorganic chemical vapour dc position (MOCVD) on yttria-stabilized zirconia (YSZ) substrates. Both fluorinated [BaCaCuO(F)] and unfluorinated (BaCaCuO) matrices proved suitable for vapour diffusion thallium incorporation using selected Tl2O3:BaO:CaO:CuO mixtures. The formation of the superconducting 2212 and 2223 films is discussed depending upon the fluorinated and unfluorinated nature of the precursor matrices.

引用

页码：332 / 336

页数：5

共 21 条

[1] METAL-ORGANIC CHEMICAL-VAPOR-DEPOSITION OF COPPER-CONTAINING PHASES - KINETICS AND REACTION-MECHANISMS [J].