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- W2076152192 abstract "The magnetic properties of tetragonal $mathrm{Y}{mathrm{Fe}}_{x}{mathrm{Mn}}_{12ensuremath{-}x}$ compounds, which crystallize in the $mathrm{Th}{mathrm{Mn}}_{12}$-type structure, are governed by both strong competing exchange interactions between the magnetic moments on three nonequivalent sites $8i$, $8j$, and $8f$ occupied by Mn (Fe) atoms preferentially in $8i$ $(8f)$ and Mn-planar (Fe-axial) magnetocrystalline anisotropies. Using low field ac magnetic susceptibility versus temperature, zero-field-cooled and field-cooled magnetization versus temperature, and applied magnetic field, specific heat, x-ray-absorption spectroscopy at $mathrm{Fe}phantom{rule{0.2em}{0ex}}K$ and $mathrm{Mn}phantom{rule{0.2em}{0ex}}K$ edges, and neutron-diffraction experiments, the magnetic phase diagram of $mathrm{Y}{mathrm{Fe}}_{x}{mathrm{Mn}}_{12ensuremath{-}x}$ has been determined. Up to six different phases were found as a function of the Fe concentration $x$. Some of them have not been thoroughly investigated until now. In particular, the antiferromagnetic ordering of the itinerant $mathrm{Y}{mathrm{Mn}}_{12}$ is different from the phase proposed before, and the spin-glass-like phase observed at low temperatures for $2ensuremath{leqslant}xensuremath{leqslant}6$ has been characterized in more detail. Contrary to other intermetallic Mn-based systems, the magnetism in $mathrm{Y}{mathrm{Fe}}_{x}{mathrm{Mn}}_{12ensuremath{-}x}$ cannot be correlated in a straightforward way to $3dtext{ensuremath{-}}3d$ distances and it seems to be more sensitive to the electronic density and the localization-delocalization of electronic band states on the three sites $8i$, $8j$, and $8f$." @default.
- W2076152192 created "2016-06-24" @default.
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- W2076152192 date "2005-05-25" @default.
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- W2076152192 title "Interplay between competing exchange interactions and magnetocrystalline anisotropies in<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:mi mathvariant=normal>Y</mml:mi><mml:msub><mml:mi mathvariant=normal>Fe</mml:mi><mml:mi>x</mml:mi></mml:msub><mml:msub><mml:mi mathvariant=normal>Mn</mml:mi><mml:mrow><mml:mn>12</mml:mn><mml:mo>−</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math>: The magnetic phase diagram" @default.
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- W2076152192 doi "https://doi.org/10.1103/physrevb.71.174422" @default.
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