Microstructural investigation of Bi–Sr–Ca–Cu–oxide thick films on alumina substrates |
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Authors: | J A Alarco A Ilushechkin T Yamashita A Bhargava J Barry I D R Mackinnon |
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Affiliation: | (1) Centre for Microscopy and Microanalysis, The University of Queensland, Queensland, 4072, Australia |
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Abstract: | The microstructure of Bi–Sr–Ca–Cu–oxide (BSCCO) thick films on alumina substrates has been characterized using a combination
of X-ray diffractometry, scanning electron microscopy, transmission electron microscopy of sections across the film/substrate
interface and energy-dispersive X-ray spectrometry. A reaction layer formed between the BSCCO films and the alumina substrates.
This chemical interaction is largely responsible for off-stoichiometry of the films and is more significant after partial
melting of the films. A new phase with f c c structure, lattice parameter a = 2.45 nm and approximate composition Al3Sr2CaBi2CuO
x
has been identified as reaction product between BSCCO and Al2O3.
This revised version was published online in November 2006 with corrections to the Cover Date. |
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Keywords: | |
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