High-Pressure Synthesis of Hydrides of Ca-TM Systems (TM = Mn, Fe, Co and Ni)
High-Pressure Synthesis of Hydrides of Ca-TM Systems (TM = Mn, Fe, Co and Ni)
复制标题
Ca-TM 体系氢化物的高压合成（TM = Mn、Fe、Co 和 Ni）
DOI：
10.2320/matertrans.42.443
复制
发表时间：
2001
影响因子：
1.2
通讯作者：
M. Okada
中科院分区：
文献类型：
--
作者：
H. Kakuta;T. Miyashita;Y. Goto;A. Kamegawa;H. Takamura;M. Okada
本文用高压技术研究了Ca-TM-H（TM = Mn，Fe，Co，Ni）体系的新结构。用压砧式装置产生了高达5GPa的高压。在1073 K和5 GPa下制备的Ca-TM-H体系（TM = Mn、Fe和Co）的所有样品都是原料的混合物。而对于Ca-Ni-H体系，在1223 K和5GPa下，制备了一种新的氢化物，其化学组成为CaH 2 - 33at%Ni。氢化物的颜色为红棕色。由于在合成过程中使用了额外的氢源，颜色变为黑色。发现用额外的氢制备的新氢化物具有CsCl型结构。晶格常数a = 0.35542（2）nm。
New hydrides of Ca-TM-H systems (TM = Mn, Fe, Co and Ni) have been explored by using a high-pressure technique. The high-pressure of up to 5 GPa was yielded by cubic-anvil-type apparatus. All the samples of Ca-TM-H systems (TM = Mn, Fe and Co) prepared at 1073 K under 5 GPa were found to be mixtures of the raw materials. However, for the Ca-Ni-H system, a new hydride with a chemical composition of CaH 2 -33 at%Ni was prepared at 1223 K under 5 GPa. The color of the hydride was reddish brown. As an additional hydrogen source was used during the synthesis, the color changed into black. The new hydride prepared with additional hydrogen was found to have the CsCl-type structure. The lattice parameter was a = 0.35542(2) nm.