In:
International Journal of Modern Physics B, World Scientific Pub Co Pte Ltd, Vol. 13, No. 09n10 ( 1999-04-20), p. 967-972
Abstract:
In order to understand the difference between the effects induced by chemical substitutions and those induced by applying mechanical pressure, we synthesised and characterised samples of Y ( Ba 1-x Sr x ) 2 Cu 3 O 7-d . The structural refinements based on powder neutron diffraction data were carried out as a function of x and, for x = 0.5, as a function of d. The electric and magnetic properties have also been measured and correlated with the structural parameters and oxygen content. It seems that the Ba cations play an important role in the high T c of YBCO. Its substitution with a smaller cation corresponds to the application of a chemical pressure, but the release of the associated strain seems to play a negative role on T c .
Type of Medium:
Online Resource
ISSN:
0217-9792
,
1793-6578
DOI:
10.1142/S0217979299000801
Language:
English
Publisher:
World Scientific Pub Co Pte Ltd
Publication Date:
1999
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