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Effects of Annealing Conditions and Substrate Materials on the Superconducting Properties of Ba 2 YCu 3 O 7-y Films Prepared by the Dipping-Pyrolysis Process at 750°C

Manabe, Takaaki ; Kondo, Wakichi ; Susumu Mizuta, Susumu Mizuta ; [et al.]

IOP Publishing ; 1991

In: Japanese Journal of Applied Physics Vol. 30, No. 6A ( 1991-06-01), p. L1000-

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In: Japanese Journal of Applied Physics, IOP Publishing, Vol. 30, No. 6A ( 1991-06-01), p. L1000-

Abstract: Superconducting Ba 2 YCu 3 O 7- y (BYCO) films were prepared on various substrates by the dipping-pyrolysis process. The effects of annealing parameters, environment and time were also investigated. The 2-µm-thick films of BaCO 3 -Y 2 O 3 -CuO mixture were heat-treated at 750°C under a low-oxygen partial pressure ( p (O 2 )=2×10 -4 atm) followed by annealing under higher- p (O 2 ) atmospheres. The resulting films showed high superconducting transition temperatures; values of T c,onset ( s )'s were 89 K on SrTiO 3 (100), 86 K on LaAlO 3 (100), 86 K on yttria-stabilized zirconia (YSZ), 83 K on MgO(100), and 76 K on sapphire.

Type of Medium: Online Resource

ISSN: 0021-4922 , 1347-4065

URL: Article

DOI: 10.1143/JJAP.30.L1000

RVK:

UA 4210.1

RVK:

UA 4210.2

RVK:

UA 4210

Language: Unknown

Publisher: IOP Publishing