屬於skutterudite結構的CoSb3擁有很多令人感興趣的電子特性和熱電應用，所以引起很多研究廣泛來討論。在本篇論文裡，核磁共振技術被用來探討CoSb3的電和磁特性。我們在77K到450K的區間裡量測了躍遷圖譜、奈特位移、和自旋-晶格鬆弛時間。中央譜線的寬度並不隨溫度改變，透露了Co原子不受磁矩的影響，並且CoSb3是個非磁性材料。奈特位移的實驗結果指出d電子在費米面附近的貢獻最重要和隨著溫度升高被熱激發越過能隙的是s電子。利用本質半導體的Korrina 關係來分析，CoSb3是個p型半導體擁有ㄧ個大小為40meV的能隙，這和理論計算的結果互相吻合。

CoSb3 has been of great interest due to its unusual electronic properties and promising potential for thermoelectric applications. In this letter, 59Co NMR measurement was performed on the CoSb3. The quadrupole splitting, Knight Shift, and spin-lattice relaxation time ( ) for CoSb3 have been measured between 77K and 450K. Line shape remains unchanged with temperature, which indicated that no magnetic moment associated with the Co sites, being consistent with the diamagnetic character for CoSb3.The results of Knight Shift indicated that the density of state is dominated by d electron near Fermi surface and the s-character carriers thermally excited across the band edges. CoSb3 is a narrow-band-gap semiconductor with =40meV, that consist with band-structure calculation.

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