Dc. Johnston et al., PHASE-SEPARATION AND DOPED-HOLE SEGREGATION IN LA2CUO4-XSRXCUO4+DELTA(DELTA AND LA2), Physica. C, Superconductivity, 235, 1994, pp. 257-260
Herein, we review the magnetic, superconducting and structural phase d
iagrams of the title systems, with an emphasis on our recent results f
rom magnetic and structural neutron diffraction, magnetic susceptibili
ty and La-139 nuclear quadrupole resonance measurements. The results c
larify the miscibility gap in the La2CuO4+delta system, and indicate t
he occurrence of frustrated phase separation on a nanoscopic length sc
ale in the La2-xSrxCuO4 system with 0 < x less than or similar to 0.05
.