0.5–5.0 at.% Nd³⁺ doped (Ca_0.94Gd_0.06)F_2.06 transparent ceramics were fabricated by vacuum hot-pressing sintering. The structural, spectroscopic and thermal properties of Nd:(Ca_0.94Gd_0.06)F_2.06 transparent ceramics, as well as the influence of Nd³⁺ content on these properties were investigated. The as-fabricated ceramic samples exhibited high transparency and nearly pore-free microstructure. The absorption peaks located at 538 nm, 576 nm, 736 nm, 792 nm and 865 nm were attributed to the transitions from ground state to the excited states of Nd³⁺ ions, and the absorption coefficients increased linearly with Nd³⁺ content increasing. The emission band of the sample doped with 1 at.% Nd³⁺ concentration exhibited the highest emission intensity, while the lifetime decreased sharply with the increase of Nd³⁺ concentration. In addition, with Nd³⁺ content increasing from 0.5 to 5.0 at.%, the thermal expansivity coefficients increased slightly, while the thermal conductivity decreased from 4.21 to 2.36 W/m K at room temperature.

通过真空热压烧结制备了0.5–5.0 at。％的Nd ³⁺掺杂（Ca _0.94 Gd _0.06）F _2.06透明陶瓷。研究了Nd：（Ca _0.94 Gd _0.06）F _2.06透明陶瓷的结构，光谱和热性能，以及Nd ³⁺含量对这些性能的影响。制成的陶瓷样品显示出高透明性和几乎无孔的微观结构。位于538 nm，576 nm，736 nm，792 nm和865 nm的吸收峰归因于Nd ³⁺从基态到激发态的跃迁离子，并且吸收系数随Nd ³⁺含量的增加而线性增加。掺杂1 at。％Nd ³⁺浓度的样品的发射带表现出最高的发射强度，而寿命随着Nd ³⁺浓度的增加而急剧下降。此外，随着Nd ³⁺含量从0.5增加到5.0 at。％，在室温下热膨胀系数略有增加，而热导率从4.21降低到2.36 W / mK。