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Special Features of Optical Properties of Ternary Alloys Ti(Fe x Co 1− x )
Author(s) -
Sasovskaya I. I.
Publication year - 1991
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221640136
Subject(s) - ternary operation , ferromagnetism , materials science , absorption (acoustics) , density of states , condensed matter physics , analytical chemistry (journal) , atomic physics , crystallography , chemistry , physics , computer science , composite material , chromatography , programming language
Measurements are made of the optical characteristics: n , k , σ(ω), ϵ 1 (ω), ϵ 2 (ω) of the ternary pseudo‐binary alloys Ti(Fe x Co 1‐ x ), 0.2 ≦ x ≦ 0.8 in the spectral range 0.07 to 4.96 eV. The results obtained are compared with the optical properties of the compounds TiFe and TiCo. It is shown that the change in the main absorption band (0.6 ≦ ħω ≦ 3 eV) over the series of alloys can be explained by the shift of E F relative to the special features (minima, peaks) of the density of states curves N ( E ). An additional low‐energy quantum absorption within 0.2 ≤ ħω ≤ 0.6 eV discovered in ternary alloys is explained by interband transitions between virtual bound states which are due to antistructural Fe atoms and are responsible for ferromagnetism in Ti(Fe x Co 1− x ).