Interplay between structural and magnetic properties of Lu<InlineEquation ID="Equ1"> <EquationSource Format="TEX">$\mathsf{_{2}}$</EquationSource> </InlineEquation>Fe <InlineEquation ID="Equ2"> <EquationSource Format="TEX">$\mathsf{_{17}}$</EquationSource> </InlineEquation> at high pressure

A crystal structure of Lu<Subscript>2</Subscript>Fe<Subscript>17</Subscript> was studied by means of neutron powder diffraction method in the pressure range up to 1.65 GPa and ambient temperature. Modification of the magnetic properties corresponding to the pressure-induced change of the crystal structure of Lu<Subscript>2</Subscript>Fe<Subscript>17</Subscript> is analysed on the basis of local moment model in the mean field approximation. The experimentally observed suppression of FM state and stabilization of the non-collinear AFM state under high pressure in Lu<Subscript>2</Subscript>Fe<Subscript>17</Subscript> can be explained qualitatively from model calculations. FM and non-collinear AFM states in Lu<Subscript>2</Subscript>Fe<Subscript>17</Subscript> are found to be nearly degenerate at ambient pressure with the estimated difference between the total energy minima of <InlineEquation ID="Equ3"> <EquationSource Format="TEX">$\Delta E=2.73$</EquationSource> </InlineEquation> mRyd and the application of high pressure removes this degeneracy in the favor of non-collinear AFM state. Copyright Springer-Verlag Berlin/Heidelberg 2004