HIGH PRESSURE-HIGH TEMPERATURE ELECTRICAL RESISTIVITY STUDIES ON Nd0.9Ca0.1Ba2Cu3O7-δ

Author:

SELVA VENNILA R.1,REZA GHORBANI S.2,VICTOR JAYA N.1

Affiliation:

1. Department of Physics, Anna University, Chennai-600 025, India

2. Department of Physics, Sabzevar Teacher Training University, Sabzevar-397, Iran

Abstract

High pressure-high temperature electrical resistivity study on composition-controlled Nd 0.9 Ca 0.1 Ba 2 Cu 3 O 7-δ high T c superconductor (HTSC) is carried out by a four-probe technique using Bridgman anvils. A simple heating coil arrangement is used for heating the samples. Electrical resistivity behavior under pressure (up to a maximum of 8 GPa) at various temperatures (up to a maximum of 523 K) were studied and reported in this paper. Simulation of energy dispersive X-ray diffraction confirms substitution of calcium at the Nd site of Nd -123. Variation of the electrical resistivity under pressure is compared with that of the structural changes and the bulk modulus was determined.

Publisher

World Scientific Pub Co Pte Lt

Subject

Condensed Matter Physics,Statistical and Nonlinear Physics

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