High-Pressure Coupling Reactions to Produce a Spherical Bulk RexN/Fe3N Composite

Hengyuan Zhang; Binbin Wu; Jingyi Liu; Zhaodong Liu; Filippo S Boi; Duanwei He; Tetsuo Irifune; Li Lei

doi:10.1021/acs.inorgchem.2c04089

High-Pressure Coupling Reactions to Produce a Spherical Bulk Re_xN/Fe₃N Composite

Inorg Chem. 2023 Apr 24;62(16):6263-6273. doi: 10.1021/acs.inorgchem.2c04089. Epub 2023 Apr 9.

Authors

Hengyuan Zhang¹, Binbin Wu¹, Jingyi Liu¹, Zhaodong Liu², Filippo S Boi³, Duanwei He¹, Tetsuo Irifune⁴, Li Lei¹

Affiliations

¹ Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China.
² State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China.
³ College of Physics, Sichuan University, Chengdu 610065, China.
⁴ Geodynamics Research Center, Ehime University, Matsuyama 790-8577, Japan.

PMID: 37032490
DOI: 10.1021/acs.inorgchem.2c04089

Abstract

We report a novel high-pressure coupling (HPC) reaction that couples the nitridation of Re with high-pressure solid-state metathesis (HPSSM) of Fe₃N to produce a spherical bulk Re_xN/Fe₃N composite. Compared with conventional methods, upon coupling of the HPSSM reactions, the synthetic pressure for Re nitridation was successfully reduced from 13 to 10 GPa (for Re₃N) and from 20 to 15 GPa (for Re₂N). The product Re_xN species would be surrounded by product Fe₃N, resulting in a spherical bulk Re_xN/Fe₃N composite (x = 2 or 3). The composite exhibits a soft magnetic behavior, and the content of nitrogen in Re_xN (x = 2 or 3) was controlled by adjusting the P-T conditions. The HPC reaction establishes a new approach for the bulk synthesis of 5d transition metal nitride.