Chemical bath deposition of Fe-doped ZnS thin films: Investigations of their ferromagnetic and half-metallic properties
Chemical bath deposition of Fe-doped ZnS thin films: Investigations of their ferromagnetic and half-metallic properties
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DOI：
10.1016/j.mssp.2015.05.017
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发表时间：
2015-11-01
影响因子：
4.1
通讯作者：
Naseem, Shahzad
中科院分区：
文献类型：
--
作者：
Akhtar, Muhammad Saeed;Malik, Mohammad Azad;Naseem, Shahzad
通过化学浴沉积（CBD）方法将 Fe 掺杂 ZnS 纳米晶薄膜沉积在玻璃基板上。 X 射线衍射图揭示了 ZnS 立方闪锌矿相的形成。 ZnS晶格中铁的掺入改变了ZnS结构的晶格参数。掺杂薄膜的纯度通过不存在第二相或铁簇来证实。 SEM 图像显示未掺杂和 Fe 掺杂 ZnS 样品之间几乎呈球形簇的生长，尺寸略有变化。 M-H 曲线表明掺杂 ZnS 薄膜表现出室温铁磁性。详细研究了磁化特性作为施加场和掺杂浓度的函数。密度泛函计算是使用 Elk 代码中采用的全势线性增强平面波 (FP-LAPW) 方法进行的。硫和铁之间强烈的p-d杂化导致铁磁稳定态和半金属性。半金属铁掺杂ZnS薄膜在未来的自旋电子器件中具有潜在的应用。 (C) 2015 年作者。由爱思唯尔有限公司出版
The nanocrystalline thin films of Fe-doped ZnS were deposited onto glass substrates by a chemical bath deposition (CBD) method. X-ray diffraction patterns reveal the formation of cubic zinc blende phase of ZnS. The incorporation of iron in ZnS lattice changed the lattice parameters of the ZnS structure. The purity of doped films was confirmed by the absence of secondary phases or iron clusters. SEM images show the growth of almost spherical clusters with slight change in size between un-doped and Fe-doped ZnS samples. The M-H curves indicate that doped ZnS thin films exhibit room temperature ferromagnetism. The magnetization properties as a function of applied field and doping concentration were studied in detail. The density functional calculations were performed using Full Potential Linearized Augmented Plane Wave (FP-LAPW) approach as is employed in Elk-code. The strong p-d hybridization between sulfur and iron resulted in ferromagnetic stable state and half-metallicity. The half-metallic iron doped ZnS thin films have potential applications in future spintronic devices. (C) 2015 The Authors. Published by Elsevier Ltd.