A Hydride Route to Ternary Alkali Metal Borides: A Case Study of Lithium Nickel Borides

被引：17

作者：

Gvozdetskyi, Volodymyr ^{[1
]}

Hanrahan, Michael P. ^{[1
,2
]}

Ribeiro, Raquel A. ^{[3
,4
]}

Kim, Tae-Hoon ^{[2
]}

Zhou, Lin ^{[2
]}

Rossini, Aaron J. ^{[1
,2
]}

Canfield, Paul C. ^{[2
,3
]}

Zaikina, Julia, V ^{[1
]}

机构：

[1] Iowa State Univ, Dept Chem, Ames, IA 50011 USA

[2] Iowa State Univ, US DOE, Ames Lab, Ames, IA 50011 USA

[3] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA

[4] Univ Fed ABC UFABC, CCNH, BR-09210580 Santo Andre, SP, Brazil

来源：

CHEMISTRY-A EUROPEAN JOURNAL | 2019年 / 25卷 / 16期

关键词：

boron; hydrides; intermetallic phases; magnetic properties; solid-state reactions; TOTAL-ENERGY CALCULATIONS; CRYSTAL-STRUCTURE; THERMOMAGNETIC PROPERTIES; PHYSICAL-PROPERTIES; MAGNETIC-PROPERTIES; ABSOLUTE-STRUCTURE; PLASMA SYNTHESIS; DESIGN; PHASES; GROWTH;

D O I：

10.1002/chem.201805398

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Ternary lithium nickel borides LiNi3B1.8 and Li2.8Ni16B8 have been synthesized by using reactive LiH as a precursor. This synthetic route allows better mixing of the precursor powders, thus facilitating rapid preparation of the alkali-metal-containing ternary borides. This method is suitable for "fast screening" of multicomponent systems comprised of elements with drastically different reactivities. The crystal structures of the compounds LiNi3B1.8 and Li2.8Ni16B8 have been re-investigated by a combination of single-crystal X-ray/synchrotron powder diffraction, solid-state Li-7 and B-11 NMR spectroscopies, and scanning transmission electron microscopy. This has allowed the determination of fine structural details, including the split position of Ni sites and the ordering of B vacancies. Field-dependent and temperature-dependent magnetization measurements are consistent with spin-glass behavior for both samples.

引用

页码：4123 / 4135

页数：13

共 64 条

[11] TaRh2B2 and NbRh2B2: Superconductors with a chiral noncentrosymmetric crystal structure [J].