Short‐Range Order and Solid Solution Hardening

Blanter, M. S.; Fradkov, M. Ya.

doi:10.1002/pssb.2221680206

Cited by 6 publications

(7 citation statements)

References 7 publications

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“…It is easily shown that in such case the Fermi Surface (FS) undergoes a change of its topology. Thus, according to the ETT theory [1][2][3][4][5][6], the electronic density of states (DOS) may be written as the sum of a regular term, no (E), related to metal bands not responsible for the ETT, and a special term, n1(E), i.e. (1) The special term in eq.…”

Section: -Electronic Topological Transitions and Deviations From Vegamentioning

confidence: 99%

“…(7) is smeared out at any T > 0, due to the the Fermi function, in eq. (6), and even at zero temperature [3,5], by disorder effects introduced by alloying (finite lifetimes). In random alloys, the effects on the equilibrium volume per atom VS. concentration curve, V (N), can be studied by minimisation of the free energy with respect to the volume at fixed atomic concentration.…”

Section: -Electronic Topological Transitions and Deviations From Vegamentioning

confidence: 99%

“…4, where we plotted the Bloch Spectral Function along the relevant directions of the Brillouin Zone. 3. -The effects of finite quasi-particle lifetimes…”

Section: -Electronic Topological Transitions and Deviations From Vegamentioning

confidence: 99%

“…This pioneering work has been followed by a relatively wide literature since then [2,3], and has been extended to the finite-temperature cases, although the experimental difficulty has partly limited these studies. Later, it has been realised [2] that an ETT can be more easily obtained by changing the valence electron per atom ratio, e/a, in metallic alloys.…”

Section: -Introductionmentioning

confidence: 99%

“…(3) and(4) take the values given in table I and the corresponding changes in the FS shall be the filling of an hole pocket (M), the opening of an electron pocket (m), the disruption (51) or the opening (52) of a neck.…”

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Quasi-particle lifetimes effects on deviations from Vegard’s rule in Ag-Pd disordered alloys

1998

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The deviations from linearity in the concentration dependence of lattice spacings in AgcPdl-c have been recently related to the topology changes shown by the Fermi Surface, or Electronic Topological Transitions (ETTs), ofthis alloy. Using an extension of the ETTs theory to finite-temperature and impurity scattering case, and in terms of a simple Rigid Band Model, we study such deviations and interpret them as the results of the filling of the hole pocket centered at the X point of the Brillouin Zone, remarking the role of the finiteness of the quasi-particle lifetime of the relevant states. We also show how ab InItI0 calculations based on the Coherent Potential Approximation underestimate these lifetimes.PACS 71.55.Ak -Metals, semimetals and alloys. PACS 71.20 -Electron density of states and band structure of crystalline solids. PACS 71.1 0 -Theories and models of many electron systems.

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Section: -Electronic Topological Transitions and Deviations From Vegamentioning

confidence: 99%

Section: -Electronic Topological Transitions and Deviations From Vegamentioning

confidence: 99%

“…4, where we plotted the Bloch Spectral Function along the relevant directions of the Brillouin Zone. 3. -The effects of finite quasi-particle lifetimes…”

Section: -Electronic Topological Transitions and Deviations From Vegamentioning

confidence: 99%

Section: -Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Quasi-particle lifetimes effects on deviations from Vegard’s rule in Ag-Pd disordered alloys

1998

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Strain‐Induced Interaction of Substitutional Atoms in Cubic Metals

Blanter¹

1994

Physica Status Solidi (b)

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The energies of strain-induced (elastic) interaction of pairs of substitutional atoms and host atom displacements around a substitutional atom are calculated for Al, Ag, Au, Cu, Ni, Pd, Cr, u-Fe, Mo, Nb, Ta, V, and W taking into account the discrete atomic structure of the host lattice. The elastic constants, Born-von Karman constants of the host lattice, and coefficients of the concentration expansion of the solid solution lattice due to substitutional atoms are the numerical parameters used. A computer calculation is carried out in the general form appropriate for any substitutional atoms in these metals. The energies of strain-induced interaction of substitutional atoms are of the same order as the 'chemical' interaction energy and should be taken into account during computer simulation of structure and properties of the substitutional solid solutions.

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