Abstract
Compositional region, in which the 0212 structure is stabilized, was investigated in a (La1-ySry)2 (Ca1-xYx)Cu2Oz system. For ceramics at various x and y, crystal structure was examined by powder X-ray diffraction and electrical resistivity was measured by standard four-probe method. Almost single-phase ceramics were synthesized in the region of 1.0≥4y-x≥0.8. No monotonical change in lattice parameters with the values of x and y was observed. The sample obtained at a nominal composition of La1.4Sr0.6Ca0.8 Y0.2Cu2Oy (x=0.2, y=0.3) showed the lowest resistivity in all materials with the 0212 structure. No superconductor was found in the 0212 structure.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
