NDLI: Structural relationships among $LiNaMg[PO_{4}]F$ and $Na_{2}M[PO_{4}]F$ (M = Mn–Ni, and Mg), and the magnetic structure of $LiNaNi[PO

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Kobayashi, Hironori Ling, Chris D. Shikano, Masahiro Liu, Samuel Ben Yahia, Hamdi Avdeev, Maxim
Description	Author Affiliation: Ben Yahia H ( Research Institute for Ubiquitous Energy Devices, National Institute of Advanced Industrial Science and Technology (AIST), Midorigaoka 1-8-31, Ikeda, Osaka 563-8577, Japan. benyahia.hamdi@voila.fr shikano.masahiro@aist.go.jp.)
Abstract	The new compound $LiNaMg[PO_{4}]F$ has been synthesized by a wet chemical reaction route. Its crystal structure was determined from single-crystal X-ray diffraction data. $LiNaMg[PO_{4}]F$ crystallizes with the monoclinic pseudomerohedrally twinned $LiNaNi[PO_{4}]F$ structure, space group $P2_{1}/c,$ a = 6.772(4), b = 11.154(6), c = 5.021(3) Å, β = 90.00(1)° and Z = 4. The structure contains $[MgO_{3}F]_{n}$ chains made up of zigzag edge-sharing $MgO_{4}F_{2}$ octahedra. These chains are interlinked by $PO_{4}$ tetrahedra forming $2D-Mg[PO_{4}]F$ layers. The alkali metal atoms are well ordered in between these layers over two atomic positions. The use of group–subgroup transformation schemes in the Bärnighausen formalism enabled us to determine precise phase transition mechanisms from $LiNaNi[PO_{4}]F-$ to $Na_{2}M[PO_{4}]F-type$ structures (M = Mn–Ni, and Mg) (see video clip 1 and 2). The crystal and magnetic structure and properties of the parent $LiNaNi[PO_{4}]F$ phase were also studied by magnetometry and neutron powder diffraction. Despite the rather long interlayer distance, $d_{min}(Ni^{+2}–Ni^{+2})$ ∼ 6.8 Å, the material develops a long-range magnetic order below 5 K. The magnetic structure can be viewed as antiferromagnetically coupled ferromagnetic layers with moments parallel to the b-axis.
ISSN	14779226
Issue Number	5
Journal	Dalton Trans.
Volume Number	43
e-ISSN	13645447
Language	English
Publisher	Royal Society of Chemistry
Publisher Date	2014-02-07
Publisher Place	Great Britain (UK)
Access Restriction	Subscribed
Subject Keyword	Chemistry
Content Type	Text
Resource Type	Article
Subject	Inorganic Chemistry

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