Temperature-dependence on the structural, optical, and magnetic properties of Al-doped ZnO nanoparticles
Temperature-dependence on the structural, optical, and magnetic properties of Al-doped ZnO nanoparticles
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DOI：
10.1016/j.optmat.2016.09.037
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发表时间：
2016-12
影响因子：
3.9
通讯作者：
Xiaofei Lu;Yongsheng Liu;Xiaodong Si;Yulong Shen;Wenying Yu;Wenli Wang;Xiaojing Luo;Tao Zhou-Tao-Zho
中科院分区：
文献类型：
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作者：
Xiaofei Lu;Yongsheng Liu;Xiaodong Si;Yulong Shen;Wenying Yu;Wenli Wang;Xiaojing Luo;Tao Zhou-Tao-Zho
采用水热法在较低的温度下合成并退火制备了al掺杂ZnO纳米颗粒。XRD结果表明，所有样品均具有六方纤锌矿结构。较高的合成温度使晶粒尺寸略有增大，晶体质量有所改善。通过控制合成温度，可以获得从针状紧密排列到蒲公英状三维纳米结构的不同形貌。合成温度对光学性能的影响表明，随着合成温度的升高，材料在紫外区的吸收能力下降。此外，退火后的纳米颗粒具有增强的室温铁磁性（RT-FM）和饱和磁化（MS）。这些结果表明，在相对较低的温度下合成的al掺杂ZnO纳米粒子可能是光敏和室温纳米激光器的有希望的候选者。
Al-doped ZnO nanoparticles synthesized by a hydrothermal method at relatively low temperature synthesis and anneal were reported in this paper. The XRD results reveal that all the samples have a hexagonal wurtzite structure. A higher synthesis temperature leads to a slight increase in the grain size and improvement of the crystal quality. Different morphologies evolved from acicular closely-packed morphology to dandelion-like 3D nanostructures can be obtained by controlling the synthesis temperatures. Moreover, the influence of synthesis temperature on optical property indicates that the absorption ability in ultraviolet region declines with increasing the synthesis temperature. In addition, the annealed nanoparticles have an enhancement of the room temperature ferromagnetism (RT-FM) and the saturation magnetization (MS). Those results suggest that Al-doped ZnO nanoparticles synthesized at relatively low temperature could be a promising candidate for photosensitive and room temperature nanolasers applications.