Quantum Theory of the Order–Disorder Transition Energy in AuCu₃

Abstract

The stability conditions of the short-and long-range orders are flormulated and numerical calculations are made of the order-disorder heat of transition as well as the total ordering energy of a AuCu, solid solution having the L1, superstructure.HH pacsem TennoTH nepexona n o p~n o~-6 e c n o p a~o~ II a~e p r m i ynopHEoseHm cnnaBaC@OpMyJlHpOBaHbI yCJlOBIIH YCTOfii4IIBOCTII 6 n~m~e r o II AaJlbHerO IIOPHiTKa, BblnOJlHe-AUCU, CO CBepXCTpyHTypOfi LIZ.

On the twinning and special grain boundaries of bimetallic particles via pulsed laser ablation of bulk AuCu in a vacuum

“…23 Apparently, rapid cooling and rather short radiant heating in the PLA process did not cause an appreciable long range ordering of the AuCu 3 phase having a considerable order-disorder transition energy according to quantum theory. 24 Still, the short range ordering and clustering of the Au and Cu atoms may occur This journal is © The Royal Society of Chemistry 2014 simultaneously upon cooling. In this connection, recent theoretical calculations considering the interactions with the second nearest neighbors in addition to the first ones indicated that defect clustering and ordering may both be valid diffusional pathways in the decomposition of alloys.…”

Calculation of the properties and the structure of ordering alloys of the Cu—Au system

“…This can be seen from the calculation of the pictures of diffuse scattering and, accordingly, from the calculation of the short-range order structures in the present work ( Fig. 1 and 5 ) as well as from the results of [17] in which the full energy of transformation and the heat of the order-disorder transition were calculated. I n the cases when the property of the alloy depends on the behaviour of the ordering energy in local points of the reciprocal space, the given approximation is not sufficient.…”