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首页> 外文期刊>Physical review >Ferromagnetic ordering and half-metallic state of Sn_2CO_3S_2 with the shandite-type structure
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Ferromagnetic ordering and half-metallic state of Sn_2CO_3S_2 with the shandite-type structure

机译:闪锌矿型结构Sn_2CO_3S_2的铁磁有序和半金属态

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摘要

Single crystalline Sn_2CO_3S_2 with the shandite-type structure was investigated by magnetization, magnetore-sistance, Hall effect, and heat capacity measurements and by ~(119)Sn MoBbauer spectroscopy. Sn_2CO_3S_2 orders ferromagnetically at 172 K with an easy-axis magnetization of ≈ 1 μB along the hexagonal c axis. The half-metallic ferromagnetic state is investigated by detailed band-structure calculations by density functional theory (DFT) methods. The magnetoresistance and the Hall effect as well as the DFT results show that ferromagnetic Sn_2CO_3S_2 is a compensated metal. The ~(119)Sn Moeßbauer spectroscopic data confirm these findings. Large transferred hyperfine fields B_(hf) up to 34.2 T are observed.
机译:通过磁化,磁阻,霍尔效应和热容测量以及〜(119)Sn MoBbauer光谱研究了具有亚铁型结构的单晶Sn_2CO_3S_2。 Sn_2CO_3S_2在172 K时铁磁性排列,沿六边形c轴的易轴磁化强度为≈1μB。通过密度泛函理论(DFT)方法通过详细的能带结构计算来研究半金属铁磁态。磁阻和霍尔效应以及DFT结果表明,铁磁Sn_2CO_3S_2是一种补偿金属。 〜(119)SnMoeßbauer光谱数据证实了这些发现。观察到高达34.2 T的大转移超精细场B_(hf)。

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