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- W2847044993 abstract "Herein, we have systematically reported the synthesis, structure, magnetism, and electrical/thermal transport properties of $mathrm{AsNC}{mathrm{r}}_{3}$. Tetragonal-antiperovskite metallic $mathrm{AsNC}{mathrm{r}}_{3}$ exhibits a second-order ferromagnetic (FM)-paramagnetic (PM) transition around 243 K, where the resistivity and specific heat also show a related change. Based on the obtained parameters from basic physical properties, the nature of weak electron-electron correlation was confirmed by both the Kadowaki-Woods ratio and Wilson ratio. Moreover, the value of the Rhodes-Wolfarth ratio (1.312) is larger than 1, suggesting an itinerant ferromagnetism in $mathrm{AsNC}{mathrm{r}}_{3}$. To further clarify the magnetic interaction of the $mathrm{AsNC}{mathrm{r}}_{3}$ system, the study of critical behavior around the FM-PM transition has been performed. The critical exponents ($ensuremath{beta}$, $ensuremath{gamma}$, and $ensuremath{delta}$) of $mathrm{AsNC}{mathrm{r}}_{3}$ obtained from different methods are very close to the theoretical values of the mean-field model ($ensuremath{beta}=0.5$, $ensuremath{gamma}=1.0$, and $ensuremath{delta}=3.0$), indicating the existence of a long-range FM interaction. Besides, the exchange interaction distance $J(r)ensuremath{sim}{r}^{ensuremath{-}4.3}$ for $mathrm{AsNC}{mathrm{r}}_{3}$ decreases more slowly than that of mean-field model $J(r)ensuremath{sim}{r}^{ensuremath{-}4.5}$, further confirming the long-range magnetic coupling in our system. The strong hybridization between Cr-$3d$ and N-$2p$ states as well as between Cr-$3d$ and As-$4p$ states confirmed by our theoretical calculations results in the itinerant characterization of carriers and the long-range FM interaction in tetragonal-antiperovskite $mathrm{AsNC}{mathrm{r}}_{3}$." @default.
- W2847044993 created "2018-07-19" @default.
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- W2847044993 date "2018-07-09" @default.
- W2847044993 modified "2023-10-16" @default.
- W2847044993 title "Critical behavior in the itinerant ferromagnet <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML><mml:mrow><mml:mi>AsNC</mml:mi><mml:msub><mml:mi mathvariant=normal>r</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:mrow></mml:math> with tetragonal-antiperovskite structure" @default.
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- W2847044993 doi "https://doi.org/10.1103/physrevb.98.014412" @default.
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