Structure and physical properties of Ni-based quasi-one-dimensional selenides Rb0.9Ni3.1Se3 and K0.7Ni3.1Se3

被引：6

作者：

Lin, Jiawei ^{[1
]}

Deng, Jun ^{[2
]}

Guo, Zhongnan ^{[1
]}

Cheng, Erjian ^{[3
,4
]}

Sun, Fan ^{[1
]}

Liu, Ning ^{[2
]}

Wang, Bianbian ^{[1
]}

Li, Shiyan ^{[3
,4
]}

Yuan, Wenxia ^{[1
]}

机构：

[1] Univ Sci & Technol, Sch Chem & Biol Engn, Dept Chem, Beijing 100083, Peoples R China

[2] Chinese Acad Sci, Res & Dev Ctr Funct Crystals, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China

[3] Fudan Univ, Dept Phys, State Key Lab Surface Phys, Shanghai 200433, Peoples R China

[4] Fudan Univ, Lab Adv Mat, Shanghai 200433, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2019年 / 793卷

基金：

中国国家自然科学基金;

关键词：

Quasi-one-dimensional structure; Nickel selenide; Solid state reaction; Metallic behavior; Spin-glass state; TRANSITION-METAL CHALCOGENIDES; TOTAL-ENERGY CALCULATIONS; RB;

D O I：

10.1016/j.jallcom.2019.04.175

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The materials with quasi-one-dimensional crystal structure have gained intense interest because of their novel structure and related properties such as electron correlations, charge-density wave and potential superconductivity. Here we report two new Ni-based quasi-one-dimensional selenides: Rb0.9Ni3.1Se3 and K0.7Ni3.1Se3. These two compounds are nonstoichiometric and composed of one-dimensional (Ni3Se3)(infinity) infinite chains with face-sharing Ni-6 octahedra along the c direction. It is found that the interchain distance in these compounds is strongly influenced by the radius of intercalated alkali-metal cations, while the configuration of (Ni3Se3)(infinity) chains is basically unaffected. The conductivity measurement indicates the metallic behavior of Rb0.9Ni3.1Se3 and K0.7Ni3.1Se3. Meanwhile, the magnetic susceptibility reveals the spin-glass state below 10 K. It is indicated that the magnetic moments in these compounds are related to the Ni-Ni bonding distance. First-principles calculation reproduces the metallic state of this 133 phase, and also suggests that the magnetic interaction is attributed to the extra Ni in structure. These compounds form a Ni-based quasi-one-dimensional material family, which provides new platform to understand the structure-property relationship of quasi-one-dimensional materials, and also offer a series of potential precursors to synthesis the novel (Ni3Se3)(infinity) molecular wires. (C) 2019 Elsevier B.V. All rights reserved.

引用

页码：425 / 432

页数：8