CONTACT MATERIALS FOR III-V SEMICONDUCTORS - PHASE-EQUILIBRIA OF INSBIN THE TERNARY-SYSTEM IN-NI-SB

The In-Ni-Sb phase diagram was investigated in the compositional regio n of the compound semiconductor InSb. The phase equilibria were establ ished in two isothermal sections at 440 and 300 degrees C, respectivel y, by means of EPMA and X-ray diffraction. Using DTA experiments, six invariant ternary phase reactions were identified and a complete react ion scheme was constructed in the respective composition area. The B8( 1)-type phase Ni1+/-xSb and the B8(2)-type zeta-phase in the Ni-In sys tem were found to form a continuous solid solution which was studied i n detail at 900 degrees C. The lattice parameters of the ternary phase Ni1+/-x (SbyIn1-y) (zeta-phase) were determined as a function of comp osition along a section connecting the two binary melting point maxima . (C) 1998 Elsevier Science S.A. AII rights reserved.