(color online) X-ray diffraction patterns (λ = 0.6199 Å) of the sample under various pressures at room temperature. The five-pointed star represents the diffraction peak of MoSi₂ and the rhombus represents the diffraction peak of Mo₅Si₃. (a) The diffraction patterns of MoSi₂ and Mo₅Si₃ upon compression to the highest pressure of 41.1 GPa. (b) Rietveld refinement pattrens of the specimen about 4.9 GPa. Red line: calculated curve, black short lines: Bragg position, forks type: experimental curve, blue lines: difference curve.