Superconductivity of La2−ySryCu1−xNixO4+δ (y = 0.1, 0.2; 0 ≤ x ≤ 0.5) The hole-compensating effect of Ni

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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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