A technique for precise magneto-transport measurements at low temperaturesunder pressure up to 8 GPa

A technique for a precise transport measurement under high pressure up to 8 GPa in a superconducting magnet has been developed. In order to obtain a q uasi-hydrostatic pressure the direct compression method is applied to modif ied Bridgman anvils with a Teflon capsule. This technique enables us to mea sure the absolute values of electrical resistivity, magneto-resistance and the Hall coefficient at various temperatures from 300 K down to 1.5 K in ma gnetic fields up to 20 T. We demonstrate some experimental results of magne to-transport measurements on single crystals of SmS and CeSb, showing extra ordinary behavior in the temperature, pressure and magnetic field-dependent transport phenomena. (C) 1999 Elsevier Science B.V. All rights reserved.