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Abstract:
We discuss the superconducting and other phase transitions in CeCu2Si2
and UT2Al3 (T: Ni,Pd). For CeCu2Si2, a novel lattice instability is
found to limit the highest T(c) attainable by appropriate heat
treatment. In the UT2Al3 homologs, antiferromagnetism develops at T(N)
= 4.6K (14K) and possibly coexists with heavy-fermion superconductivity
below T(c) = 1K (2K) for T = Ni(Pd).