%0 Journal Article
%A Grzechnik, Andrzej
%A Comer, Sara
%A Kolis, Joseph W.
%A Friese, Karen
%T Crystal structure and high-pressure stability of hydrothermally grown LiKTmF$_{5}$
%J Solid state sciences
%V 39
%@ 1293-2558
%C Amsterdam [u.a.]
%I Elsevier
%M FZJ-2015-02434
%P 40 - 44
%D 2015
%X Single crystals of LiKTmF5 were grown hydrothermally. Its crystal structure was studied with single-crystal X-ray diffraction to 8.6 GPa. The material is monoclinic (P21/c, Z = 4) and does not undergo any phase transition in the pressure range studied here. The analysis of its pseudosymmetry with respect to the minimal k-supergroup C2/m reveals that the deviations of the individual atoms from the respective higher symmetrical positions in C2/m are increasing on compression, i.e., due to the reduction of the unit-cell volume. Such a behaviour is the opposite of the effect of incorporation of various M cations in the LiKMF5 materials (M:Y and rare earths) at atmospheric conditions, since LiKYbF5 and LiKLuF5 with the smallest unit cells crystallize in space group C2/m, while LiLYF5 with a larger unit cell has P21/c symmetry.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000348952700008
%R 10.1016/j.solidstatesciences.2014.11.002
%U https://juser.fz-juelich.de/record/189246