Fabrication and properties of transparent Tb2Ti2O7 magneto-optical ceramics

Autor:	Dianjun Hu, Lexiang Wu, Lixuan Zhang, Jiang Li, Tengfei Xie, Xiaoying Li, Zhaoxiang Yang, Ziyu Liu
Rok vydání:	2021
Předmět:	Materials science Fabrication Verdet constant Pyrochlore engineering.material law.invention law Hot isostatic pressing visual_art Phase (matter) Materials Chemistry Ceramics and Composites Transmittance visual_art.visual_art_medium engineering Calcination Ceramic Composite material
Zdroj:	Journal of the European Ceramic Society. 41:7208-7214
ISSN:	0955-2219
DOI:	10.1016/j.jeurceramsoc.2021.07.024
Popis:	Transparent Tb2Ti2O7 magneto-optical ceramics were fabricated from co-precipitated nano-powders by vacuum pre-sintering with hot isostatic pressing (HIP) post-treatment. The formation of pyrochlore phase, decomposition of the precursor, and the morphology of powders calcined at different temperatures were investigated. The in-line transmittance of Tb2Ti2O7 ceramics, which were pre-sintered at 1350 ℃ for 2 h with HIP post-treatment at 1450 ℃ for 3 h and subsequently annealed at 800 ℃ for 20 h in NH3 atmosphere, reaches 65.5 % at 1064 nm. The Verdet constant of Tb2Ti2O7 ceramics is −229.0 ± 0.6 rad·T−1 m−1 at the wavelength of 633 nm, which is 71 % higher than that of the commercial Tb3Ga5O12 crystals. Tb2Ti2O7 magneto-optical ceramics show a promising application for Faraday rotators.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a0fccd28cca43abe5ff29b4e24f5497e https://doi.org/10.1016/j.jeurceramsoc.2021.07.024 Zobrazit plný text záznamu Full Text from ScienceDirect