Abstract
Novel (Tb1-xLux)2O3 magneto-optical transparent ceramics were prepared through a solid-solution method via vacuum pre-sintering followed by hot isostatic pressing (HIP). The Lu-containing samples were solid-solution phases between Tb2O3 and Lu2O3, which effectively stabilized the phase transition of Tb2O3 during the sintering process. A typical component of (Tb1-xLux)2O3 ceramic with x = 0.5 was selected to study the densification behavior and microstructure evolution in detail. The polished (Tb0.5Lu0.5)2O3 ceramics with a thickness of 3 mm vacuum pre-sintered at 1700 °C under 1.0 × 10−3 Pa combined with HIP post-treatment at 1600 °C showed good magneto-optical property. The Verdet constant measured at 633 nm was -224.33 rad·T−1 m−1, 30% higher than that of Tb3Al5O12 (TAG). However, the in-line transmittance was 73.6% at 633 nm, lower than that of TAG. The (Tb1-xLux)2O3 ceramics will be a promising material for Faraday devices after further improving the optical quality.
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