&lt;title&gt;Theoretical investigation of physical properties for microsystems: atom-cluster-nanostructure&lt;/title&gt;

Nyavro, A. V.; Demidenko, V. S.; Buldakov, Michail A.; Cherepanov, Victor N.; Зайцев, Н. Л.

doi:10.1117/12.675212

Cited by 1 publication

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“…To construct the "muffin-tin" potential of clusters, the electron densities were calculated using the unrestricted Hartree-Fock method [58][59][60] with the Gunnarson-Lundqvist exchange correlation potential [61]. This potential makes it possible to effectively describe the magnetic states of both atoms and the entire cluster as a whole [43].…”

Section: Discussionmentioning

confidence: 99%

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Magnetic Properties of Nickel-Titanium Alloy during Martensitic Transformations under Plastic and Elastic Deformation

et al. 2021

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This paper focuses on the processes of the occurrence of magnetization during structure formation in samples of Ni51Ti49 alloy under deformation conditions. The possibility of the existence of a phase with an FCC (face-centered cubic) lattice in titanium nickelide has been demonstrated by electron microscopy and electron diffraction. It has been discovered that the interplanar distances of BCC110 (body-centered cubic), FCC111, and HCP002 (hexagonal close packed) in the alloy under study have similar values, which indicates the possibility of their mutual polymorphic transformation. Based on the modular self-organization, a scheme of martensitic transformations in titanium nickelide from the B2 structure (BCC lattice) to the B19’ structure (HCP lattice) through an intermediate phase with an FCC lattice is proposed. It is shown that lenticular crystals appear in the Ni51Ti49 alloy under tensile deformation until rupture, which is accompanied by the onset of ferromagnetism. The effect of magnetization in Ni51Ti49 samples when immersed in liquid nitrogen has been also discovered. In this case, the reason for the appearance and disappearance of magnetization can be associated with microdeformation processes caused by direct and reverse martensitic transitions that occur during cooling and heating of the samples.

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Section: Discussionmentioning

confidence: 99%

“…To simulate the magnetic state of elastically and plastically deformed samples of the Ni 51 Ti 49 alloy, a spin polarized calculation of the density of electronic states of intermediate phases was carried out by the method of scattered waves. Our calculations are based on the author's program, described in paper [43].…”

Section: Methodsmentioning

confidence: 99%