Studies on X-ray diffraction and Raman spectra of B-doped natural graphite

Abstract The structure of B-doped natural graphite has been investigated using X-ray diffraction and Raman scattering methods. The B-doped graphite has crystal lattice parameters different from those of pristine graphite. The a -axis is elongated and the c -axis contracted by B doping. Furthermore, B doping induces both an increase in intensity of the 1360 cm −1 Raman band and the appearance of a new Raman band at 1620 cm −1 , accompanied by a gradual shift of the 1580 cm −1 Raman band to a higher frequency. It appeared that boron doping introduces a local distortion around substitutional B atoms within the graphite layer planes.