ABSTRACTThis paper describes the single crystals of Tb3+ doped KCl grown by the Bridgeman–Stockbarger method. The grown crystal was subjected to Fourier transform infrared (FTIR), X-ray diffraction method (XRD), scanning electron microscopy (SEM), electron paramagnetic resonance (EPR), Vickers’s micro hardness and photoluminescence (PL). The presence of various functional groups has been identified from FTIR studies with their vibrating frequency range from 400 to 4000 cm−1. The structural studies on the grown crystals were carried out by X-ray diffraction analysis technique and found that the grown crystal crystallizes in a cubic structure. The lattice cell parameters of Tb3+-doped KCl crystals are a = b = c = 3.14260 A and α = β = γ = 90°. The optical properties were studied by PL spectra. The excitation spectrum shows the peak at 237, 262 and 345 nm. Upon excitation at 261 nm, the emission spectrum exhibits a broad band at 377, 410 and 490 nm corresponding to 5d → 4f transition. EPR measurements showed...

中文翻译：

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Tb3+ 掺杂 KCl 单晶的光学、结构、机械和磁性能

摘要本文描述了通过 Bridgeman-Stockbarger 方法生长的 Tb3+ 掺杂的 KCl 单晶。对生长的晶体进行傅里叶变换红外 (FTIR)、X 射线衍射法 (XRD)、扫描电子显微镜 (SEM)、电子顺磁共振 (EPR)、维氏显微硬度和光致发光 (PL)。通过 FTIR 研究确定了各种官能团的存在，它们的振动频率范围为 400 到 4000 cm-1。通过X射线衍射分析技术对生长的晶体进行结构研究，发现生长的晶体以立方结构结晶。Tb3+ 掺杂的 KCl 晶体的晶胞参数为 a = b = c = 3.14260 A 和 α = β = γ = 90°。通过PL光谱研究光学性质。激发光谱显示峰值在 237，262 和 345 纳米。在 261 nm 激发后，发射光谱在 377、410 和 490 nm 处呈现宽频带，对应于 5d → 4f 跃迁。EPR 测量显示...