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- W2995468665 abstract "Binary Cr-Te compounds are known to exhibit various structures and interesting physical properties, which are very sensitive to Cr content and arrangement. We report the structure and physical properties of a compound $mathrm{C}{mathrm{r}}_{12ensuremath{-}x}mathrm{T}{mathrm{e}}_{16}$ with $xensuremath{sim}2.65$. $mathrm{C}{mathrm{r}}_{9.35}mathrm{T}{mathrm{e}}_{16}$ crystallizes in the trigonal structure with the space group $Poverline{3}m1$ (No. 164), consisting of four different Cr sites (Cr1, Cr2, Cr3, Cr4) with an ordered Cr4 vacant layer. The electrical resistivity, magnetization, specific heat, and neutron diffraction measurements indicate that there is a ferromagnetic transition at ${T}_{mathrm{C}1}ensuremath{sim}160$ K with the first-order nature, and an anomaly at ${T}_{mathrm{C}2}ensuremath{sim}67$ K. At 5 K, the magnetic moments of Cr2 and Cr3 are aligned along the $c$ axis with $2.78phantom{rule{0.16em}{0ex}}{ensuremath{mu}}_{mathrm{B}}/mathrm{Cr}$. Detailed neutron diffraction refinement suggests that ordered magnetic moments on Cr1 (fully occupied) and Cr4 (partially occupied) are negligible. The different magnetic response stems from different valence states and different magnetic interactions between Cr2/Cr3 and Cr1/Cr4 as evidenced by the x-ray absorption fine-structure measurements. This creates a unique two-dimensional magnetic system with ordered moments confined in the Cr2/Cr3 layer." @default.
- W2995468665 created "2019-12-26" @default.
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- W2995468665 date "2019-12-16" @default.
- W2995468665 modified "2023-10-15" @default.
- W2995468665 title "Structure, chromium vacancies, and magnetism in a <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML><mml:mrow><mml:mi mathvariant=normal>C</mml:mi><mml:msub><mml:mi mathvariant=normal>r</mml:mi><mml:mrow><mml:mn>12</mml:mn><mml:mo>−</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub><mml:mi mathvariant=normal>T</mml:mi><mml:msub><mml:mi mathvariant=normal>e</mml:mi><mml:mn>16</mml:mn></mml:msub></mml:mrow></mml:math> compound" @default.
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- W2995468665 doi "https://doi.org/10.1103/physrevmaterials.3.125001" @default.
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