Vol. 12, no.2, 2020


Calculation of ordering energies by the model potential method taking into account the linear size effect in the Ni-14at.%Pt alloy

Valentin M. Silonov

Lomonosov Moscow State University, http://www.phys.msu.ru/
Moscow 119991, Russian Federation
E-mail: silonov_v@mail.ru
Lkhamsuren Enkhtor
National University of Mongolia, School of Arts and Science, Department of Physics, http://www.num.edu.nm
Ulaanbaatar 210646, Their Surguuliyin Gudamzh, 1, Mongolia
E-mail: enkhtor@num.edu.mn

Received December 16, 2019, reviewed December 12, 2019, accepted January 14, 2020
Abstract. For disordered binary solid solutions, a new method is proposed for calculating the ordering energies in an arbitrary coordination sphere, taking into account the linear size effect. Using the model potential of transition metals, the Animalu calculated the ordering energies of the Ni-14at.% Pt solid solution in twelve coordination spheres. The temperature of the order-disorder phase transition was estimated for the Ni-14at.% Pt alloy. Satisfactory agreement with the experimental data is obtained.

Keywords:binary alloys, ordering energy, short-range order parameters, pseudopotential method

UDC 539.1

RENSIT, 2020, 12(2):235-240. DOI: 10.17725/rensit.2020.12.235.

Full-text electronic version of this article - web site http://en.rensit.ru/vypuski/article/332/12(2)235-240e.pdf