Studies on fluorination of Y2O3 by NH4HF2

Mukherjee, Abhishek; Awasthi, Alok K.; Mishra, Saurabh; Krishnamurthy, N.

doi:10.1016/j.tca.2011.03.032

Cited by 31 publications

(26 citation statements)

References 20 publications

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“…In fact, the mass losses calculated for these reactions are in agreement with those obtained from the dTG deconvolution. Y(Prop)3 decomposition occurs in presence of highly reactive fluorinated species that lead to direct formation of the YF3 [43,44], without any detectable intermediate.…”

Section: Discussionmentioning

confidence: 99%

Elucidation of the decomposition reactions of low-fluorine YBa2Cu3O7-x precursors during film pyrolysis

Piperno

Rasi

Santis

et al. 2020

Journal of Analytical and Applied Pyrolysis

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Section: Discussionmentioning

confidence: 99%

Elucidation of the decomposition reactions of low-fluorine YBa2Cu3O7-x precursors during film pyrolysis

Piperno

Rasi

Santis

et al. 2020

Journal of Analytical and Applied Pyrolysis

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“…They are constituted of sodium metaphosphate (Sigma-Aldrich, 65–70% P 2 O 5 basis), barium fluoride (Strem Chemicals, 99%), and terbium fluoride prepared by fluorination of terbium oxide Tb 4 O 7 (Rongye Industry, 99.99%) with ammonium bifluoride NH 4 FHF (MV Laboratories, 99.999%). The fluorination reaction that occurs under nitrogen atmosphere at 300 °C is …”

Section: Methodsmentioning

confidence: 99%

Fluorophosphate Glasses with High Terbium Content for Magneto-optical Applications

2020

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Fluorophosphate glasses are investigated following the composition law (1 − x)(70NaPO 3 − 30BaF 2 ) − xTbF 3 with x = 35, 40, 45, and 50 mol %. Bubble-free vitreous rods of 5 cm length and 4 mm in diameter are obtained without crystallization from 35 to 50 mol % of TbF 3 by using the conventional melt-quenching process. The maximum content of Tb 3+ ions successfully dissolved in these glasses corresponds to an ionic density of 8.88 × 10 21 ions cm −3 , which is the highest value ever reported in a fluorophosphate glass matrix, to our knowledge. Thermal, structural, and optical properties were characterized respectively by DSC, Raman spectroscopy, prism coupling technique, UV−visible-NIR, and Verdet constant measurement. The increase of the terbium content from 35 to 50 mol % in the glass results in an increase of its glass transition temperature (T g ) from 352 to 390 °C, a decrease of its thermal stability against crystallization (ΔT) from 153 to 73 °C, and an increase of both its refractive index and Verdet constant, respectively. A maximum value of Verdet constant of −78 rad T −1 m −1 at 650 nm is measured in the sample containing 50 mol % of TbF 3 .

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“…We have synthesized Yb 3+ doped YF 3 samples by the fluorination of an appropriate mixture of oxides with ammonium hydrogen difluoride (NH 4 HF 2 ). Fluorination of oxides with NH 4 HF 2 is one of the most suitable methods to produce pure fluorides (oxygen-free) [54]. It is suitable due to its low price, easy usage, and the fact that the reaction with this agent does not require complex equipment.…”

Section: Introductionmentioning

confidence: 99%

Investigation of structural, microstructural and magnetic properties of Yb Y1-F3 solid solutions

Aleksić

Barudžija

Jugović

et al. 2020

Journal of Physics and Chemistry of Solids

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Studies on fluorination of Y2O3 by NH4HF2

Cited by 31 publications

References 20 publications

Elucidation of the decomposition reactions of low-fluorine YBa2Cu3O7-x precursors during film pyrolysis

Elucidation of the decomposition reactions of low-fluorine YBa2Cu3O7-x precursors during film pyrolysis

Fluorophosphate Glasses with High Terbium Content for Magneto-optical Applications

Investigation of structural, microstructural and magnetic properties of Yb Y1-F3 solid solutions

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