Channelling studies on the lattice location of B atoms in graphite |
| |
Authors: | Eiichi Yagi Tadao Iwata Teruo Urai |
| |
Affiliation: | a RIKEN (The Institute of Physical and Chemical Research), Wako, Saitama 351-0198, Japan b The School of Science and Engineering, Waseda University, 3-4-1 Ohkubo, Shinjuku-ku, Tokyo 162-8601, Japan c Japan Atomic Energy Research Institute, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan |
| |
Abstract: | In order to obtain information on the lattice location of B atoms in graphite, channelling experiments have been performed at room temperature with a proton beam of an energy of 0.65-0.77 MeV for the 〈0 0 0 1〉 axial channel in highly oriented pyrolytic graphite (HOPG) crystals doped with 0.32 at.% B. The B atoms are detected by measuring α-particles which are emitted as a result of a nuclear reaction 11B(p,α)αα. It is clearly demonstrated that most of B atoms are shadowed behind the 〈0 0 0 1〉 C atomic rows. Taking account of the already reported experimental results on a change of lattice parameters by B-doping, it is concluded that most of B atoms are located at substitutional sites. It is also observed that B-doping introduces lattice strain on the c-plane. In addition, the presence of a small portion of interstitial B atoms is suggested. |
| |
Keywords: | C0100 C1200 E0500 P1400 |
本文献已被 ScienceDirect 等数据库收录! |
|