Measurement of interlayer spacings and crystal sizes in turbostratic carbons

✍ Scribed by M.A Short; P.L Walker Jr.

• Publisher: Elsevier Science
• Year: 1963
• Tongue: English
• Weight: 704 KB
• Volume: 1
• Category: Article
• ISSN: 0008-6223
• DOI: 10.1016/0008-6223(63)90003-4

✦ Synopsis

Interlayer spacings and crystal sizes of turbostratic carbons are frequently obtained by the direct and improper application of the Bragg, Scherrer, and Warren equations to the experimental X-ray scattering profile. The components of this scattering profile and their sources are considered, and the applicability of the Scherrer and Warren equations to turbostratic carbons is discussed. An analytical method is outlined for separating the incoherent scattering, the scattering due to crystallographically amorphous atoms and single graphitic-type layers, and the 002, 004, 10, 11 and 20 bands from the experimental data. Proper application of the Bragg, Scherrer, and Warren equations to these bands yields useful and accurate values of the interlayer spacings and crystal sizes. It is shown that these values differ significantly from the results obtained directly from the experimental profile.