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A Hydride Route to Ternary Alkali Metal Borides: A Case Study of Lithium Nickel Borides
Author(s) -
Gvozdetskyi Volodymyr,
Hanrahan Michael P.,
Ribeiro Raquel A.,
Kim TaeHoon,
Zhou Lin,
Rossini Aaron J.,
Canfield Paul C.,
Zaikina Julia V.
Publication year - 2019
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201805398
Subject(s) - lithium (medication) , materials science , ternary operation , alkali metal , nickel , crystal structure , crystallography , lithium hydride , magnetization , inorganic chemistry , hydride , metal , metallurgy , chemistry , ionic bonding , magnetic field , organic chemistry , ion , medicine , physics , quantum mechanics , computer science , programming language , endocrinology
Ternary lithium nickel borides LiNi 3 B 1.8 and Li 2.8 Ni 16 B 8 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 LiNi 3 B 1.8 and Li 2.8 Ni 16 B 8 have been re‐investigated by a combination of single‐crystal X‐ray/synchrotron powder diffraction, solid‐state 7 Li and 11 B 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.