Spectral Reflectance of CoAl and NiAl Alloys with CsCl Structure

Takashi Sambongi, Ryuhei Hagiwara, Tokio Yamadaya

Reflectance of CoAl and NiAl alloys with CsCl structure was measured in the spectral region between 7000 and 3000 Å. Structures in the reflectance curves are discussed in terms of interband transitions. Rigid-band approximation seems to be able to explain various physical properties of these alloys. © 1966, THE PHYSICAL SOCIETY OF JAPAN. All rights reserved.

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Materials
Curve 1
Temperature K: 298 Wavelength Range, μ: 0.29-0.72 Geometry θ θ' ω': ~0°, , ~2π Reported Error, %: 50 Al, 50 Co; CsCl structure; polished with silicon carbide paper, alumina powder and diamond paste progressively; annealed in vacuum (3 x 10-6 mm Hg) up to 973 K and sivwly cooled; data extracted from smooth curve.
Curve 2
Temperature K: 298 Wavelength Range, μ: 0.29-0.72 Geometry θ θ' ω': ~0°, , ~2π Reported Error, %: 52 Al, 48 Co; CsCl structure; polished with silicon carbide paper, alumina powder and diamond paste progressively; annealed in vacuum (3 x 10-6 mm Hg) up to 973 K and slowly cooled; data extracted from smooth curve.
Curve 3
Temperature K: 298 Wavelength Range, μ: 0.29-0.72 Geometry θ θ' ω': ~0°, , ~2π Reported Error, %: 54 Al, 46 Co; CsCl structure; polished with silicon carbide paper, aluminum powder and diamond paste progressively; annealed in vacuum (3 x 10-6 mm Hg) up to 973 K and slowly cooled; data extracted from smooth curve.
Curve 1
Temperature K: 298 Wavelength Range, μ: 0.29-0.72 Geometry θ θ' ω': ~0°, , ~2π Reported Error, %: 54 Co, 46 Al; CsCl structure; polished with silicon carbide paper, alumina powder and diamond paste progressively; annealed in vacuum (3 x 10-6 mm Hg) up to 973 K and slowly cooled; data extracted from smooth curve.
Curve 2
Temperature K: 298 Wavelength Range, μ: 0.29-0.71 Geometry θ θ' ω': ~0°, , ~2π Reported Error, %: 52 Co, 48 Al; CsCl structure; polished with silicon carbide paper, alumina powder and diamond paste progressively; annealed in vacuum (3 x 10-6 mm Hg) up to 973 K and slowly cooled; data extracted from smooth curve.
Curve 3
Temperature K: 298 Wavelength Range, μ: 0.29-0.72 Geometry θ θ' ω': ~0°, , ~2π Reported Error, %: 50 Co, 50 Al; CsCl structure; polished with silicon carbide paper, alumina powder and diamond paste progressively; annealed in vacuum (3 x 10-6 mm Hg) up to 973 K and slowly cooled; data extracted from smooth curve.