In:
Japanese Journal of Applied Physics, IOP Publishing, Vol. 32, No. 10R ( 1993-10-01), p. 4529-
Abstract:
Superconducting epitaxial films of Ba 1- x K x BiO 3 have been synthesized by laser ablation using a stoichiometric target ( x =0.4). The films were deposited at substrate temperatures of 450–550°C in argon at the pressure of 1 Torr with successive annealing at 350°C in oxygen at pressure of 1 atm. The energy density of the laser was 1.5–2.5 J/cm 2 per pulse. The deposition temperature and the laser power affect the crystalline property, the superconducting property and the surface morphology. The film deposited at the substrate temperature of 510°C has the highest onset T c of 28 K. The films oriented with respect to 〈 100 〉 are found to be epitaxial, using a four-circle diffractometer. Cracking in the superconducting films is not found. The film on the MgO substrate with small lattice mismatch exhibits higher zero-resistance T c than those on the other substrates, SrTiO 3 and LaSrGaO 4 .
Type of Medium:
Online Resource
ISSN:
0021-4922
,
1347-4065
DOI:
10.1143/JJAP.32.4529
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
1993
detail.hit.zdb_id:
218223-3
detail.hit.zdb_id:
797294-5
detail.hit.zdb_id:
2006801-3
detail.hit.zdb_id:
797295-7
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