Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany.
Institut für Anorganische Chemie, RWTH Aachen, Germany.
Angew Chem Int Ed Engl. 2017 Jun 12;56(25):7302-7306. doi: 10.1002/anie.201702440. Epub 2017 May 18.
The combination of laser-heated diamond anvil cells and synchrotron Mössbauer source spectroscopy were used to investigate high-temperature high-pressure chemical reactions of iron and iron nitride Fe N with nitrogen. At pressures between 10 and 45 GPa, significant magnetic hyperfine splitting indicated compound formation after annealing at 1300 K. Subsequent in situ X-ray diffraction reveals a new modification of FeN with NiAs-type crystal structure, as also rationalized by first-principles total-energy and chemical-bonding studies.
采用激光加热金刚石压腔和同步辐射穆斯堡尔光谱技术，研究了铁和氮化铁 FeN 与氮在高温高压下的化学反应。在 10 到 45 GPa 的压力范围内，经 1300 K 退火后，显著的磁超精细分裂表明化合物的形成。随后的原位 X 射线衍射揭示了 FeN 的一种新的同镍砷型晶体结构的变体，这也可以通过第一性原理全能量和化学键研究得到合理化。
