Abstract Hydrothermally synthesized Cd1-xDyxS (x = 0.0, 0.05 and 0.10) nanoparticles were investigated for its structural, morphological, optical and magnetic properties. The single wurtzite phase was confirmed for all compositions. HR-TEM micrographs revealed spherical morphology of nanoparticles. The average particle size found to decrease from 40 nm to 30 nm with Dy3+ doping. The optical band gap was increased from 2.44 eV (x = 0.0) to 2.55 eV (x = 0.10). The luminescence peak at 568 nm due to Dy3+ transition (4F9/2 → 6H13/2) was observed. Magnetic analysis confirmed room temperature ferromagnetism in all the samples. M-H loop of doped nanoparticle showed enhanced magnetization with paramagnetic contribution.

中文翻译：

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Dy3+ 掺杂的 CdS 稀释磁性半导体纳米粒子的光学和磁性

摘要 研究了水热合成的 Cd1-xDyxS (x = 0.0、0.05 和 0.10) 纳米粒子的结构、形态、光学和磁性特性。对于所有组合物都证实了单一纤锌矿相。HR-TEM 显微照片显示纳米颗粒的球形形态。发现平均粒径随着 Dy3+ 掺杂从 40 nm 减小到 30 nm。光学带隙从 2.44 eV (x = 0.0) 增加到 2.55 eV (x = 0.10)。观察到由于 Dy3+ 跃迁 (4F9/2 → 6H13/2) 在 568 nm 处的发光峰。磁性分析证实了所有样品的室温铁磁性。掺杂纳米粒子的 MH 环显示出具有顺磁性贡献的增强磁化。