Fig. 2: Raman spectra of NiI2 under different pressures. | Nature Communications

Fig. 2: Raman spectra of NiI2 under different pressures.

From: Surprising pressure-induced magnetic transformations from helimagnetic order to antiferromagnetic state in NiI2

Fig. 2

a–f Raman spectra of NiI2 flake at different temperatures under various pressures, e.g., 2.7, 4.4, 6.0, 6.5, 7.0, and 8.6 GPa. The dotted line in (a) indicates the peak of the zone-folded phonon mode (P3). g Raman shifts of P1, P2, and P3 peaks as a function of pressure. h The integrated intensity of P3 peak as a function of temperature under 0, 2.7, 4.4, 6.0, 6.5, 7.0, and 8.6 GPa, respectively.

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