X-Ray analysis of fixed monocrystals was used to investigate the crystalline. structure of titanium nickelide alloys with vanadium, niobium and tantalum. It is shown that doping leads to stabilization of the B2-structure and to a reduction in $M_s$. With doping along the NiTi-metal (Me) section the stabilization is less substantial when with doping along the NiTi-NiMe and NiTi-MeTi sections. The listed pacterns are explained on the basis of an examination of the role of the dimensional factor.
Department of Solid-State Physics, Faculty of Physics, Moscow State University, Leninskie Gory, Moscow, 119992, Russia
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