1201 1223

95-155$

^Subscripts for compounds are not listed since there are generally several forms that can be produced (see column 3).

fOther rare earths may be substituted for Y (yttrium) providing new compounds with somewhat different properties.

{Highest Tc obtained while subjecting sample to external pressure.

^Subscripts for compounds are not listed since there are generally several forms that can be produced (see column 3).

fOther rare earths may be substituted for Y (yttrium) providing new compounds with somewhat different properties.

{Highest Tc obtained while subjecting sample to external pressure.

ments that they remain sufficiently flexible even after the powder has been heat treated.

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