Synthesis and Characterization of Multi-Component Metal Nitrides

多组分金属氮化物的合成与表征

• 批准号: 13450263
• 负责人: SHIMADA Masahiko
• 金额: $ 7.17万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-13450263/
• 关键词: multi-component nitride; functional nitride; flux method; reactive sintering method; crystal structure; electrical property; magnetic property

Three phases with antifluorite-type related structures were prepared in the Li_3N-Mg_3N_2 system. The Rietveld analyses for the X-ray powder diffraction patterns was carried out with nitrogen vacancy models for (Li_xMg_<1-x>)_3N_<2-x>(O<x<0.20) and (Li_xMg_<1-x>)_2N_<(2-x)2/3>(0.5<x<0.6). Li and Mg atoms in LiMgN are arranged orderly in the orthorhombic unit cell. For (Li_<1-x>Ni_x)_3N solid solution, the a-axis length increased and the c-axis length decreased with increasing Ni content x. The semiconducting behavior was observed at x=0-0.20 and the sample prepared at x=0.25 showed metallic conductivity that indicated delocalization of electrons. In the Li-Fe-N system, a new nitride was synthesized. The chemical formula suggested by Rietveld analysis was Li_7FeNi_<3.75>. This compound crystallizes in a cubic cell, space group (I-43m), a=9.782Å, and has an antifluorite-type related superstructure. Li_7FeN_<3.75> showed antiferromagnetism (T_N=40K).Six new compounds BasCu_3In_4N_5,Ba<14>Cu_2In_4N_7,Sr_8Cu_3In_4N_5,Ba<0.73>Sr<0.28>CuN, Ba_6In_<4.72>N_3 and Ba_<19>In_9N_9 were found. In each compound, N atoms are surrounded by Ba or Sr and/or Cu atoms, and situated in the N atom centered octahedron of the metal atoms. These octahedra share apexes, edges, and faces, forming tunnel structures in Ba_8Cu_3In_4N_5 and Sr_8Cu_3In_4N_5,a three-dimensional network in Ba_6In_<4.72>N_3,and layered structure in Ba_<14>Cu_2In_4N_7,Ba_<0.73>Sr_<0.28>CuN and Ba_<19>In_9N_9. The Ba_8Cu_3In_4N_5 and Sr_8Cu_3In_4N_5 single crystal exhibited metallic conductivity.

在LI_3N-MG_3N_2系统中制备了具有抗氟含量相关结构的三个阶段。 The Rietveld analyses for the X-ray powder diffraction patterns was carried out with nitrogen vacancy models for (Li_xMg_<1-x>)_3N_<2-x>(O<x<0.20) and (Li_xMg_<1-x>)_2N_<(2-x)2/3>(0.5<x<0.6). Limgn中的LI和MG原子在正骨单位细胞中有序排列。对于（li_ <1-x> ni_x）_3n实心解决方案，随着Ni含量x的增加，A轴长度增加，C轴长度减小。在x = 0-0.20时观察到半导体行为，并在x = 0.25时制备的样品表示金属电导率，表明电子机构的定位。在Li-Fe-N系统中，合成了一种新的氮化物。 Rietveld分析建议的化学公式为Li_7feni_ <3.75>。这种复合在一个立方细胞，空间组（I-43M），A =9.782Å中结晶，并具有抗富氟型相关的上层建筑。 li_7fen_ <3.75>显示了反铁磁性（T_N = 40K）。六种新化合物BASCU_3IN_4N_5，BA <14> CU_2IN_4N_7，SR_8CU_3IN_4NN_5，BA发现BA__9n_9。在每种化合物中，氮原子都被Ba或Sr和/或Cu原子包围，并位于n原子中，以金属原子的八人体为中心。这些八面体共享顶点，边缘和面，在BA_8CU_3IN_4N_5和SR_8CU_3IN_4N_5中形成隧道结构，BA_6IN_ <4.72> n_3中的三维网络，以及BA__2in_4n_4n_4n_4n_4n_7> CU_2IN_4N_7，BA_7，BA_7，BA_7，BA_7，BA_7，BA_7，Ba_2in_2in_73， ba_ <19> in_9n_9。 ba_8cu_3in_4n_5和sr_8cu_3in_4n_5单晶暴露金属电导率。

项目成果

H.Yamane: "Synthesis and crystal structure analysis of Sr_8Cu_3In_4N_5 and Sr_<0.53>Ba_<0.47>CuN"Journal of Solid State Chemistry. 170. 265-272 (2003)

H.Yamane：“Sr_8Cu_3In_4N_5和Sr_<0.53>Ba_<0.47>CuN的合成和晶体结构分析”固体化学杂志。

Hisanori Yamane: "Synthesis and structure of Ba_8 Cu_3 In_4 N_5 with Nitridocuprate Groups and One-Dimensional Infinite Indium Clusters"Journal of Solid State Chemistry. 163. 449-454 (2002)

Hisanori Yamane：“具有硝基铜酸盐基团和一维无限铟团簇的Ba_8 Cu_3 In_4 N_5的合成和结构”固体化学杂志。

H.Yamane: "Synthesis and structure of Ba_8Cu_3In_4N_5 with Nitridocuprate Groups and One-Dimensional Infinite Indium Clusters"Journal of Solid State Chemistry. 163. 449-454 (2002)

H.Yamane：“具有硝基铜酸盐基团和一维无限铟团簇的Ba_8Cu_3In_4N_5的合成和结构”固体化学杂志。

H.Yamane: "Ternary nitrides prepared in the Li_<13>N-Mg_3N_2 system at 900-1000K"Journal of Alloys and Compounds. 319. 124-130 (2001)

H.Yamane：“在900-1000K下在Li_ 13 N-Mg_3N_2系统中制备的三元氮化物”合金与化合物杂志。

H.Yamane: "Ternary nitrides prepared in the Li_3N-Mg_3Na_2 system at 900-1000K"Journal of Alloys and Compounds. 319. 124-130 (2001)

H.Yamane：“Li_3N-Mg_3Na_2 体系在 900-1000K 下制备的三元氮化物”《合金与化合物杂志》。