X. Fan et al., IRRADIATION EFFECTS ON THE MAGNETIC-PROPERTIES OF LA1.85SR0.15CUO4 BYHIGH-ENERGY HEAVY-IONS, Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 121(1-4), 1997, pp. 331-334
Magnetization measurements were performed on polycrystalline La1.85Sr0
.15CuO4 irradiated by Ar-40 ions with high energy of 13 GeV and 26 GeV
up to 3.0 x 10(11) ions/cm(2). An enhancement of magnetic irreversibi
lity was observed. However the critical current density J(c) did hardl
y change after irradiation, suggesting a little effect on the magnetic
flux-line pinning, On the other hand, a large increase in the lattice
parameter c was found in the Ar ion irradiation at the energy as high
as 13 and 26 GeV in comparison with that in the low-energy irradiatio
n.