A ideia da Universidade de Brasília: Uma análise do discurso

Fonseca, Dirce Mendes da

doi:10.26512/lc.v3i3-4.2613

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“…The explanation for this is that since we have x = 0.1 the chance for another atom of the same type to be near is x2 = so that an A atom with great probability will be isolated in a sea of B atoms showing a behavior similar to that of a n almost single impurity. This effect is more pronounced for still lower values of x [16]. I n the segregated case, on the other hand, this isolation does not occur so that there is not a peak in the spectrum associated with such situations.…”

Section: Results Obtained End Discussionmentioning

confidence: 87%

Density of States of a Binary Alloy with Short‐Range Order in a Bethe Lattice

Nazareno

Moreno

Ribeiro-Teixeira

et al. 1988

Physica Status Solidi (b)

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H. N. NAZARENO et al. : Density of States of a Binary Alloy 525 phys. stat. sol. (b) 146,525 (1988) . NAZAREN03) (a), I. FONSECA MORENO (a), R. M. RIBEIRO-TEIXEIRA (b), and J. R. IGLESIAS (b)A study is made of the electronic structure of a binary alloy in a Bethe lattice with coordination number 4. The basis set of orbitals sp3 was chosen thinking in the tetrahedral structure shown by most semiconductors. Short range order (SRO) correlation is included in the occupancy in the lattice. The results show a strong dependence of the density of states on the assumed values of the SRO parameter.Die Elektronenstruktur einer binaren Legierung wird in einem Bethegitter mit der Koordinationszahl vier untersucht. I n Anbetracht dessen, daS die meisten Halbleiter Tetraederstruktur zeigen, wird ein Basissatz von sps-Orbitalen gewiihlt. I n der Besetzung des Gitters wird Nahordnungs-(SR0)-Korrelation eingeschlossen. Die Ergebnisse zeigen eine strenge Abhangigkeit der Zustandsdichte von den angenommenen Werten der SRO-Parameter.

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Section: Results Obtained End Discussionmentioning

confidence: 87%