Synthesis of Nanoparticulate Alloys of the Composition Cu2Zn1鈥搙FexSnS4: Structural, Optical, and Magnetic Properties

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• 作者：Punarja Kevin ; Mohammad Azad Malik ; Simon Mcadams ; Paul O鈥橞rien
• 刊名：Journal of the American Chemical Society
• 出版年：2015
• 出版时间：December 9, 2015
• 年：2015
• 卷：137
• 期：48
• 页码：15086-15089
• 全文大小：314K
• ISSN：1520-5126

文摘

Nanoparticles of the semiconductor Cu₂Zn_1鈥?i>xFe_xSnS₄ with different mole fractions of iron (x_Fe) were synthesized by the decomposition of molecular precursors in oleylamine. The composition, structure, optical, and magnetic properties of the nanoparticles are reported. The parent (Cu₂ZnSnS₄) zinc material is usually reported as kesteritic and the corresponding iron phase as stannitic; with different site occupancies and tetragonalities. In the small ca. 8鈥?0 nm particles prepared, the smooth variation in lattice parameters and other measured properties suggest that the phase change, with composition, may be absent. SQUID magnetometry suggests that the iron containing samples are ferromagnetic at 5 K and paramagnetic at 300 K.