Systematic study of formation and crystal structure of 3d-transition metal nitrides synthesized in a supercritical nitrogen fluid under 10 GPa and 1800 K using diamond anvil cell and YAG laser heating
Systematic study of formation and crystal structure of 3d-transition metal nitrides synthesized in a supercritical nitrogen fluid under 10 GPa and 1800 K using diamond anvil cell and YAG laser heating
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DOI：
10.1016/j.jallcom.2005.04.197
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发表时间：
2005-11-10
影响因子：
6.2
通讯作者：
Yagi, T
中科院分区：
文献类型：
--
作者：
Hasegawa, M;Yagi, T
采用金刚石对顶砧和YAG激光加热系统，在超临界氮流体中，在高压（约10 GPa）和高温（约1800 K）条件下合成了3d过渡金属（Ti-Cu）氮化物。通过金属与液氮之间的简单的直接氮化反应，在短时间内成功地合成了诸如TiN、VN、CrN、Mn 3 N2、Fe 2N、Co 2N和Ni 3 N的氮化物，而没有合成任何Cu氮化物。这些结果表明，氮化物的氮与金属的比，N/M，从1到0的顺序从前过渡金属氮化物到后过渡金属氮化物。从3d过渡金属的电子排布与配位数的关系出发，讨论和解释了3d过渡金属氮化物N/M比和晶体结构的系统变化。(c)2005 Elsevier B. V.保留所有权利。
Syntheses of 3d-transition metal (Ti-Cu) nitrides have been tried in a supercritical nitrogen fluid at high pressures (about 10 GPa) and high temperatures (about 1800 K) using diamond anvil cell and YAG laser heating system. Nitrides, such as TiN, VN, CrN, Mn3N2, Fe2N, Co2N and Ni3N have been successfully synthesized easily by a simple direct nitriding reaction between metal and fluid nitrogen in a short time, while any Cu nitrides were not synthesized. These results indicate that the ratio of nitrogen to metal, N/M, of the nitride decreases from 1 to 0 with the sequence from the early transition metal nitrides to the late transition metal ones. The systematic change of the N/M ratio and crystal structure of the 3d-transition metal nitrides is discussed and interpreted on the basis of the electron arrangement of the 3d-transition metal which is relevant to its coordination number. (c) 2005 Elsevier B.V. All rights reserved.