Published February 1, 1992 | Version v1
Journal article Metadata-only

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

Creators

  • 1. Dept. of Chemistry, Purdue Univ., West Lafayette, IN (United States)
  • 2. Solid State and Structural Chemistry Unit, Indian Inst. of Science, Bangalore (India)

Description

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. (orig.)

Additional details

Publishing Information

Journal Title
Physica. C, Superconductivity
Journal Volume
191
Journal Issue
1/2
Series
Phys., C Supercond.
Journal Page Range
271-276
ISSN
0921-4534
CODEN
PHYCE

INIS

Country of Publication
Netherlands
Country of Input or Organization
Netherlands
INIS RN
23042424
Subject category
S36: MATERIALS SCIENCE; S36: MATERIALS SCIENCE;
Descriptors DEI
CERAMICS; COPPER OXIDES; HIGH-TC SUPERCONDUCTORS; LANTHANUM OXIDES; MAGNETIC FIELDS; MAGNETIC MOMENTS; MAGNETIZATION; NICKEL ADDITIONS; NICKEL OXIDES; STRONTIUM OXIDES; SUPERCONDUCTIVITY; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0000-0013 K; TEMPERATURE RANGE 0013-0065 K; TEMPERATURE RANGE 0065-0273 K; TRANSITION TEMPERATURE
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; LANTHANUM COMPOUNDS; MAGNETIC PROPERTIES; NICKEL COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; RARE EARTH COMPOUNDS; STRONTIUM COMPOUNDS; SUPERCONDUCTORS; TEMPERATURE RANGE; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS