Laser Ablation Synthesis and Characterization of Tb<sub>2</sub>O<sub>3</sub> Nanoparticles for Magneto-Optical Ceramics
In this study, nano-sized individual Tb<sub>2</sub>O<sub>3</sub> particles synthesized by the laser ablation method were extensively characterized and assessed as suitable precursors for the fabrication of transparent magneto-optical ceramics without requiring the introductio...
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MDPI AG
2022-10-01
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| Series: | Inorganics |
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| Online Access: | https://www.mdpi.com/2304-6740/10/10/173 |
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| author | Roman N. Maksimov Vladimir V. Osipov Garegin R. Karagedov Vyacheslav V. Platonov Artem S. Yurovskikh Albert N. Orlov Alfiya V. Spirina Vladislav A. Shitov |
| author_facet | Roman N. Maksimov Vladimir V. Osipov Garegin R. Karagedov Vyacheslav V. Platonov Artem S. Yurovskikh Albert N. Orlov Alfiya V. Spirina Vladislav A. Shitov |
| author_sort | Roman N. Maksimov |
| collection | DOAJ |
| description | In this study, nano-sized individual Tb<sub>2</sub>O<sub>3</sub> particles synthesized by the laser ablation method were extensively characterized and assessed as suitable precursors for the fabrication of transparent magneto-optical ceramics without requiring the introduction of grain growth inhibitors and stabilizing additives. The as-produced powder comprised 13 nm particles with a spherical shape and monoclinic crystal structure, whose full transformation into cubic phase was achieved after heating at 950 °C and 700 °C under vacuum and Ar gas, respectively. After subjecting the nanopowder compact to pre-sintering at 1350 °C, the microstructural features were investigated along with their correlation to the optical transmittance of Tb<sub>2</sub>O<sub>3</sub> ceramic hot isostatically pressed (HIPed) for 2 h at 1450 °C under 200 MPa. The as-HIPed sample had a brownish color, with an optical transmittance of 65.3% at a wavelength of 1060 nm and an average grain size of 14 μm. The Verdet constant measured at wavelengths of 633 nm and 1060 nm was 471 rad T<sup>−1</sup> m<sup>−1</sup> and 142 rad T<sup>−1</sup> m<sup>−1</sup> to confirm a very high content of magneto-active Tb<sup>3+</sup> ions. The obtained results indicate that laser ablation synthesis of nanoparticles followed by pre-sintering and HIP is a promising approach for the manufacture of magneto-optical Tb<sub>2</sub>O<sub>3</sub> ceramics without specific sintering aids. |
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| last_indexed | 2024-03-09T20:04:22Z |
| publishDate | 2022-10-01 |
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| series | Inorganics |
| spelling | doaj.art-f30d9124d752490b9867ae4627cdc1af2023-11-24T00:37:11ZengMDPI AGInorganics2304-67402022-10-01101017310.3390/inorganics10100173Laser Ablation Synthesis and Characterization of Tb<sub>2</sub>O<sub>3</sub> Nanoparticles for Magneto-Optical CeramicsRoman N. Maksimov0Vladimir V. Osipov1Garegin R. Karagedov2Vyacheslav V. Platonov3Artem S. Yurovskikh4Albert N. Orlov5Alfiya V. Spirina6Vladislav A. Shitov7Institute of Electrophysics of the Ural Branch of the Russian Academy of Sciences, 106 Amundsen St., 620016 Ekaterinburg, RussiaInstitute of Electrophysics of the Ural Branch of the Russian Academy of Sciences, 106 Amundsen St., 620016 Ekaterinburg, RussiaInstitute of Solid State Chemistry and Mechanochemistry of the Siberian Branch of the Russian Academy of Sciences, 18 Kutateladze St., 630128 Novosibirsk, RussiaInstitute of Electrophysics of the Ural Branch of the Russian Academy of Sciences, 106 Amundsen St., 620016 Ekaterinburg, RussiaUral Federal University Named after the First President of Russia B.N. Yeltsin, 19 Mira St., 620002 Ekaterinburg, RussiaInstitute of Electrophysics of the Ural Branch of the Russian Academy of Sciences, 106 Amundsen St., 620016 Ekaterinburg, RussiaInstitute of Electrophysics of the Ural Branch of the Russian Academy of Sciences, 106 Amundsen St., 620016 Ekaterinburg, RussiaInstitute of Electrophysics of the Ural Branch of the Russian Academy of Sciences, 106 Amundsen St., 620016 Ekaterinburg, RussiaIn this study, nano-sized individual Tb<sub>2</sub>O<sub>3</sub> particles synthesized by the laser ablation method were extensively characterized and assessed as suitable precursors for the fabrication of transparent magneto-optical ceramics without requiring the introduction of grain growth inhibitors and stabilizing additives. The as-produced powder comprised 13 nm particles with a spherical shape and monoclinic crystal structure, whose full transformation into cubic phase was achieved after heating at 950 °C and 700 °C under vacuum and Ar gas, respectively. After subjecting the nanopowder compact to pre-sintering at 1350 °C, the microstructural features were investigated along with their correlation to the optical transmittance of Tb<sub>2</sub>O<sub>3</sub> ceramic hot isostatically pressed (HIPed) for 2 h at 1450 °C under 200 MPa. The as-HIPed sample had a brownish color, with an optical transmittance of 65.3% at a wavelength of 1060 nm and an average grain size of 14 μm. The Verdet constant measured at wavelengths of 633 nm and 1060 nm was 471 rad T<sup>−1</sup> m<sup>−1</sup> and 142 rad T<sup>−1</sup> m<sup>−1</sup> to confirm a very high content of magneto-active Tb<sup>3+</sup> ions. The obtained results indicate that laser ablation synthesis of nanoparticles followed by pre-sintering and HIP is a promising approach for the manufacture of magneto-optical Tb<sub>2</sub>O<sub>3</sub> ceramics without specific sintering aids.https://www.mdpi.com/2304-6740/10/10/173terbium oxidenanopowderlaser ablationpolymorphic phase transitionmagnetic momentdensification |
| spellingShingle | Roman N. Maksimov Vladimir V. Osipov Garegin R. Karagedov Vyacheslav V. Platonov Artem S. Yurovskikh Albert N. Orlov Alfiya V. Spirina Vladislav A. Shitov Laser Ablation Synthesis and Characterization of Tb<sub>2</sub>O<sub>3</sub> Nanoparticles for Magneto-Optical Ceramics Inorganics terbium oxide nanopowder laser ablation polymorphic phase transition magnetic moment densification |
| title | Laser Ablation Synthesis and Characterization of Tb<sub>2</sub>O<sub>3</sub> Nanoparticles for Magneto-Optical Ceramics |
| title_full | Laser Ablation Synthesis and Characterization of Tb<sub>2</sub>O<sub>3</sub> Nanoparticles for Magneto-Optical Ceramics |
| title_fullStr | Laser Ablation Synthesis and Characterization of Tb<sub>2</sub>O<sub>3</sub> Nanoparticles for Magneto-Optical Ceramics |
| title_full_unstemmed | Laser Ablation Synthesis and Characterization of Tb<sub>2</sub>O<sub>3</sub> Nanoparticles for Magneto-Optical Ceramics |
| title_short | Laser Ablation Synthesis and Characterization of Tb<sub>2</sub>O<sub>3</sub> Nanoparticles for Magneto-Optical Ceramics |
| title_sort | laser ablation synthesis and characterization of tb sub 2 sub o sub 3 sub nanoparticles for magneto optical ceramics |
| topic | terbium oxide nanopowder laser ablation polymorphic phase transition magnetic moment densification |
| url | https://www.mdpi.com/2304-6740/10/10/173 |
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