%0 Journal Article
%A Nair, Harikrishnan S.
%A Fu, Zhendong
%A Kumar, C. M. N.
%A Pomjakushin, V. Y.
%A Xiao, Yinguo
%A Chatterji, Tapan
%A Strydom, André M.
%T Spin-lattice coupling and frustrated magnetism in Fe-doped hexagonal LuMnO 3
%J epl
%V 110
%N 3
%@ 0295-5075
%C Les-Ulis
%I EDP Science65224
%M FZJ-2015-07119
%P 37007
%D 2015
%X Strong spin-lattice coupling and prominent frustration effects observed in the 50% Fe-doped frustrated hexagonal $(h)\text{LuMnO}_3$ are reported. A Néel transition at $T_{\mathrm{N}}\approx112\ \text{K}$ and a possible spin re-orientation transition at $T_{\mathrm{SR}}\approx55\ \text{K}$ are observed in the magnetization data. From neutron powder diffraction data, the nuclear structure at and below 300 K was refined in polar P63cm space group. While the magnetic structure of LuMnO3 belongs to the $\Gamma_4\ (P6'_3c'm)$ representation, that of LuFe0.5Mn0.5O3 belongs to $\Gamma_1\ (P6_3cm)$ which is supported by the strong intensity for the (100) reflection and also judging by the presence of spin-lattice coupling. The refined atomic positions for Lu and Mn/Fe indicate significant atomic displacements at $T_{\mathrm{N}}$ and $T_{\mathrm{SR}}$ which confirms strong spin-lattice coupling. Our results complement the discovery of room temperature multiferroicity in thin films of $h\text{LuFeO}_3$ and would give impetus to study LuFe1−x Mn x O3 systems as potential multiferroics where electric polarization is linked to giant atomic displacements.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000356609500023
%R 10.1209/0295-5075/110/37007
%U https://juser.fz-juelich.de/record/278944