The first magnesium–chromium hydride synthesized by the gigapascal high-pressure technique
2003; Elsevier BV; Volume: 361; Issue: 1-2 Linguagem: Inglês
10.1016/s0925-8388(03)00431-6
ISSN1873-4669
AutoresDaisuke Kyoi, Ewa Rönnebro, Naoyuki Kitamura, Atsushi Ueda, Mikio Ito, Shigeru Katsuyama, Tetsuo Sakai,
Tópico(s)Advanced Chemical Physics Studies
ResumoThe occurrence of new magnesium-based ternary hydrides of chromium was investigated by using the gigapascal high-pressure thermal technique. Powders of MgH2 and Cr in the molar relation of 3:1 were compressed at a pressure up to 8 GPa by using a multi-anvil machine, and then heated to 873 K. The resultant samples were studied with X-ray powder diffraction and thermal desorption spectroscopy. A new phase, Mg3CrHx, was discovered under hydrogen pressure at 6–8 GPa. The hydrogen desorption was observed at around 598 K for the samples containing this new phase.
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