Characteristic crossing point (T(*)≈2.7 K) in specific heat curves of samples RuSr(2)Gd(1.5)Ce(0.5)Cu(2)O(10-δ) taken for different values of magnetic field.

Magnetic properties of polycrystalline samples of RuSr(2)(Gd(1.5)Ce(0.5))Cu(2)O(10-δ), as-prepared (by solid-state reaction) and annealed (12 h at 845 °C) in pure oxygen at different pressure (30, 62 and 78 atm) are presented.