Article ID Journal Published Year Pages File Type
1504190 Solid State Sciences 2015 6 Pages PDF
Abstract

•We measured the spectra of IR- and Raman-active phonons of Fe-doped β-rhombohedral boron.•The phonon frequencies vary monotonically within the p-type and the n-type regions respectively.•Discontinuities of phonon frequencies occur at the p-type/n-type transition indicating structural changes.•Fe-induced structural changes are restricted to its structural elements, while the basic structure remains largely unchanged.

n-type β-rhombohedral boron is e.g. obtained by interstitial doping with Fe atoms exceeding 2.45 at.%. The spectra of Raman- and IR-active phonons have been measured up to the solubility limit of ∼4 at.%. Numerous significant discontinuities in the spectra indicate structural changes at the p/n-transition. These might be restricted to specific elements of the structure, as the lattice parameters vary continuously, thus indicating that the overall structure remains largely unchanged.

Graphical abstractParameters of Raman-active phonon vs. Fe content.Figure optionsDownload full-size imageDownload as PowerPoint slide

Related Topics
Physical Sciences and Engineering Materials Science Ceramics and Composites
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