PHASE DIAGRAM OF A DILUTE BINARY SYSTEM

A. Sadiq, K. Yaldram and M. Dad
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A. Sadiq: Pakistan Institute of Nuclear Science and Technology, P.O. Nilore, Islamabad, Pakistan
K. Yaldram: Pakistan Institute of Nuclear Science and Technology, P.O. Nilore, Islamabad, Pakistan
M. Dad: Pakistan Institute of Nuclear Science and Technology, P.O. Nilore, Islamabad, Pakistan

International Journal of Modern Physics C (IJMPC), 1992, vol. 03, issue 02, 297-305

Abstract: Phase diagram of a binary system with quenched impurities has been studied with Monte Carlo computer simulation technique. Use of Swendsen-Wang algorithm makes it possi-ble to explore the vicinity of percolation transition which was difficult to explore with the traditional Metropolis method. For small vacancy concentration υ(υ=1−p, wherepis the spin concentration) the critical temperature,Tc, decreases linearly with υ consistent with earlier results on this system. For larger values of v departure from linearity is observed withTcdecreasing to zero sharply near the percolation threshold. An estimate of the critical exponent describing this sharp drop ofTcis also given.

Date: 1992
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DOI: 10.1142/S0129183192000245

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