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Synthesis of rhenium nitride crystals with MoS2 structure
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View: Figures


Image of FIG. 1.
FIG. 1.

The cell assembly for high-pressure experiments.

Image of FIG. 2.
FIG. 2.

Optical micrographs with (a) reflected light and (b) transmitted light, and (c) an SEM photograph of the ReN2 sample synthesized under 7.7 GPa at 1873 K.

Image of FIG. 3.
FIG. 3.

XRD profile of the sample rotating with oscillation by a Gandolfi type camera. Tick marks represent the calculated positions of the diffraction peaks of the ReN2. The difference (dotted line) between observed (crosses) and fitted patterns (thin line) is shown in the same scale (MoKα: λ = 0.071073 nm). Inset shows a conventional XRD profile with Bragg-Brentano geometry of the oriented sample synthesized at 1873 K under 7.7 GPa (CuKα: λ = 0.154059 nm).

Image of FIG. 4.
FIG. 4.

Crystal structures of ReB2 and ReN2.

Image of FIG. 5.
FIG. 5.

The pressure dependence of (a) lattice parameters a- and c-axes of the ReN2 sample (solid line). The data of ReB2 are indicated for comparison (dashed line). (b) Bulk compression curve of the ReN2 sample. The bulk modulus was determined by fitting the Birch-Murnaghan equation of state to the P-V data (solid squares).

Image of FIG. 6.
FIG. 6.

X-ray photoelectron spectroscopy spectra of the sample synthesized at 1873 K under 7.7 GPa.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Synthesis of rhenium nitride crystals with MoS2 structure