Refractive index of AuAl2 (Gold-aluminium intermetallic, Purple plague)

Optical constants of AuAl₂ (Gold-aluminium intermetallic, Purple plague)
Supansomboon et al. 2008: n,k 0.300–1.32 µm

Wavelength: µm

(0.300–1.320)

Complex refractive index (n+ik)[ i ]

Derived optical constants

Comments

68 nm thick AuAl₂ film produced by 8 min of sputtering. Room temperature.

References

S. Supansomboon, A. I. Maaroof, M. B. Cortie. "Purple glory": The optical properties and technology of AuAl₂ coatings. Gold Bulletin 41, 296-304 (2008)

Data

[CSV - comma separated] [TXT - tab separated] [Full database record]

Optical transmission calculator

Wavelength: µm
Thickness:
Calculation method: [ i ]

Sample transmittance and reflectance

Transmittance of a freestanding sample in vacuum

T =

Reflectance of a freestanding sample in vacuum

R =

Fresnel reflection calculator

Wavelength: µm
Angle of incidence (0~90°):
Direction: in out

Reflectance[ i ]

P-polarized

R_P =

S-polarized

R_S =

Non-polarized (Rp+Rs)/2

R =

R_P R_S R LogY

Reflection phase[ i ]

ɸ_P = °
ɸ_S = °

Brewster's angle[ i ]

θ_B = °

Critical angle[ i ] [ i ]

θ_C = °

Additional information

About Gold-aluminium intermetallic

Other names and variations:

AuAl₂
Purple plague
Purple death
Roberts-Austen's purple gold
Purple gold

Links:

About Intermetallic

Other names and variations:

Intermetallic compound
Intermetallic alloy
Ordered intermetallic alloy
Long-range-ordered alloy

Links:

Intermetallic - Wikipedia

RefractiveIndex.INFO

Optical constants of AuAl₂ (Gold-aluminium intermetallic, Purple plague)
Supansomboon et al. 2008: n,k 0.300–1.32 µm

Complex refractive index (n+ik)[ i ]

Refractive index[ i ]

Extinction coefficient[ i ]

Derived optical constants

Relative permittivity (dielectric constants)[ i ] [ i ]

Absorption coefficient[ i ] [ i ]

Abbe number[ i ]

Chromatic dispersion[ i ]

Group index[ i ] [ i ]

Group velocity dispersion[ i ] [ i ] [ i ]

Comments

References

Data

Optical transmission calculator

Sample transmittance and reflectance

Transmittance of a freestanding sample in vacuum

Reflectance of a freestanding sample in vacuum

Fresnel reflection calculator

Reflectance[ i ]

P-polarized

S-polarized

Non-polarized (Rp+Rs)/2

Reflection phase[ i ]

Brewster's angle[ i ]

Critical angle[ i ] [ i ]

Additional information

About Gold-aluminium intermetallic

About Intermetallic

Optical constants of AuAl2 (Gold-aluminium intermetallic, Purple plague)Supansomboon et al. 2008: n,k 0.300–1.32 µm

Complex refractive index (n+ik)[ i ]

Refractive index[ i ]

Extinction coefficient[ i ]

Derived optical constants

Relative permittivity (dielectric constants)[ i ] [ i ]

Absorption coefficient[ i ] [ i ]

Abbe number[ i ]

Chromatic dispersion[ i ]

Group index[ i ] [ i ]

Group velocity dispersion[ i ] [ i ] [ i ]

Comments

References

Data

Optical transmission calculator

Sample transmittance and reflectance

Transmittance of a freestanding sample in vacuum

Reflectance of a freestanding sample in vacuum

Fresnel reflection calculator

Reflectance[ i ]

P-polarized

S-polarized

Non-polarized (Rp+Rs)/2

Reflection phase[ i ]

Brewster's angle[ i ]

Critical angle[ i ] [ i ]

Additional information

About Gold-aluminium intermetallic

About Intermetallic

Optical constants of AuAl₂ (Gold-aluminium intermetallic, Purple plague)
Supansomboon et al. 2008: n,k 0.300–1.32 µm