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- W1636408211 abstract "The spin-polarized electron momentum distributions in the Cr-based chalcogenide spinels ${mathrm{Fe}}_{1ensuremath{-}x}{mathrm{Cu}}_{x}{mathrm{Cr}}_{2}{mathrm{S}}_{4}$ $(x=0.0,0.5,1.0)$ have been measured using a magnetic Compton scattering technique at $T=10mathrm{K}.$ The experimental magnetic Compton profiles have been compared with the results from electronic structure calculations performed using the full potential linearized augmented plane-wave method. The theoretical analysis includes a decomposition of the various orbital and atomic contributions. For $x=0.0$ and 0.5 sample compositions, the results show that the magnetic moments of the tetrahedrally coordinated ${mathrm{Fe}}^{2+}$ (for $x=0.0)$ and ${mathrm{Fe}}^{3+}$ (for $x=0.5)$ with spin moments of $3.66{ensuremath{mu}}_{B}$ (for $x=0.0)$ per formula unit $({mathrm{FU}}^{ensuremath{-}1})$ and $1.6{ensuremath{mu}}_{B}$ ${mathrm{FU}}^{ensuremath{-}1}$ (for $x=0.5),$ are aligned antiparallel to those of the octahedrally coordinated ${mathrm{Cr}}^{3+}$ with spin moments of $5.0{ensuremath{mu}}_{B}$ ${mathrm{FU}}^{ensuremath{-}1}$ (for $x=0.0)$ and $4.82{ensuremath{mu}}_{B}$ ${mathrm{FU}}^{ensuremath{-}1}$ (for $x=0.5).$ In the ferromagnetic system for $x=1.0,$ the Cr moment is found to be $5.28{ensuremath{mu}}_{B}$ ${mathrm{FU}}^{ensuremath{-}1}.$" @default.
- W1636408211 created "2016-06-24" @default.
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- W1636408211 date "2002-09-27" @default.
- W1636408211 modified "2023-09-30" @default.
- W1636408211 title "Magnetic Compton scattering study of colossal magnetoresistance materials<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant=normal>Fe</mml:mi></mml:mrow><mml:mrow><mml:mn>1</mml:mn><mml:mi>−</mml:mi><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant=normal>Cu</mml:mi></mml:mrow><mml:mrow><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><…" @default.
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- W1636408211 doi "https://doi.org/10.1103/physrevb.66.100407" @default.
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