As a result of preliminary air calcination and subsequent reduction in a flowing NH₃ atmosphere of the precursor from the liquid precipitation method for the first time, pure-phase Tb₂O₃ powder with an average particle size of 135 nm was prepared. The Tb₂O₃ magneto-optical transparent ceramics with the average grain size of 1.3 μm were successfully fabricated by vacuum pre-sintering and hot isostatic pressing post-treatment from the as-synthesized Tb₂O₃ powder. In-line transmittance values of Tb₂O₃ ceramics reach 70.3% at 633 nm, 78.1% at 1064 nm, and 79.4% at 1400 nm, respectively. Thanks to the high intrinsic concentration of Tb³⁺, Tb₂O₃ ceramics present high Verdet constants of −427.3 and −123.7 rad·T⁻¹·m⁻¹ at 633 and 1064 nm, which are about 3.1 and 3.4 times higher than those of commercial Tb₃Ga₅O₁₂ crystals, respectively. Due to the excellent magneto-optical properties, Tb₂O₃ ceramics are promising candidates for the development of Faraday isolator toward compaction used in visible and near-infrared bands.

中文翻译：

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由沉淀粉末两步烧结的铽（III）氧化物（Tb2O3）透明陶瓷

_{作为第一次液体沉淀法的前体在流动的NH 3}气氛中进行预空气煅烧和随后还原的结果，制备了平均粒径为135nm的纯相Tb ₂ O _{3粉末。以合成的Tb 2} O ₃粉末为原料，采用真空预烧结和热等静压后处理，成功制备出平均晶粒尺寸为1.3 μm的Tb ₂ O ₃磁光透明陶瓷。_{Tb 2} O ₃的在线透射率值陶瓷在 633 nm 处达到 70.3%，在 1064 nm 处达到 78.1%，在 1400 nm 处达到 79.4%。由于 Tb ³⁺的高本征浓度，Tb ₂ O ₃陶瓷在 633 和 1064 nm 处呈现出 -427.3 和 -123.7 rad·T ^-1 ·m ^-1的高 Verdet 常数，大约是 3.1 和 3.4 倍。分别为商业 Tb ₃ Ga ₅ O ₁₂晶体的那些。由于优异的磁光性能，Tb ₂ O ₃陶瓷是开发用于可见光和近红外波段的法拉第隔离器的有希望的候选者。