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Title: | Superconductivity of La2−ySryCu1−xNixO4+δ (y = 0.1, 0.2; 0 ≤ x ≤ 0.5) The hole-compensating effect of Ni |
Authors: | Bhat, V Rao, C N R Honig, J M |
Keywords: | High-Tc Superconductivity High-Pressure Oxygen Sr-Cu-O Substitution System State Disappearance Phases Defect Oxides |
Issue Date: | 1-Feb-1992 |
Publisher: | Elsevier Science BV |
Citation: | Physica C 191(1-2), 271-276 (1992) |
Abstract: | Magnetization measurements below 50 K on ceramic La2−ySryCu1−xNixO4+δ (y = 0.1, 0.2; 0≤x≤0.5) show a progressive diminution of superconducting properties with increasing x. The larger suppressive action of Ni in the y=0.1 system than that for y=0.2 is attributed to the hole-compensating effect of Ni3+. The assumption that nickel is in the 3+ state satisfactorily explains: (1) the reduction in hole concentration, (2) a right-shift of the Tc versus y curve with x, and (3) the low magnetic moment carried by Ni atoms, in the La2−ySryCu1−xNixO4+δ system. |
Description: | Restricted Access |
URI: | https://libjncir.jncasr.ac.in/xmlui/10572/1146 |
Other Identifiers: | 0921-4534 |
Appears in Collections: | Research Papers (Prof. C.N.R. Rao) |
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1992.32.pdf Restricted Access | 491.39 kB | Adobe PDF | View/Open Request a copy |
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