2016
DOI: 10.1016/j.matchemphys.2016.01.055
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New Sr1−x−zRx(NH4)zF2+x−z (R = Yb, Er) solid solution as precursor for high efficiency up-conversion luminophor and optical ceramics on the base of strontium fluoride

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Cited by 31 publications
(15 citation statements)
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“…We have performed systematic studies of phase formation in the fluoride systems using co-precipitation from aqueous nitrate and/or citrate solutions by various fluorinating agents (e.g., hydrofluoric acid, sodium fluoride, ammonium fluoride, etc.) [3,4,[29][30][31][32][33][34][35][36][37][38][39]. Our results are valuable from both practical (luminophores, laser ceramics precursors, solid electrolytes) and theoretical (studying non-classic crystallization mechanism via oriented attachment crystal growth [40]; making novel non-equilibrium phases of variable compositions [30]) points of view.…”
Section: Introductionmentioning
confidence: 82%
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“…We have performed systematic studies of phase formation in the fluoride systems using co-precipitation from aqueous nitrate and/or citrate solutions by various fluorinating agents (e.g., hydrofluoric acid, sodium fluoride, ammonium fluoride, etc.) [3,4,[29][30][31][32][33][34][35][36][37][38][39]. Our results are valuable from both practical (luminophores, laser ceramics precursors, solid electrolytes) and theoretical (studying non-classic crystallization mechanism via oriented attachment crystal growth [40]; making novel non-equilibrium phases of variable compositions [30]) points of view.…”
Section: Introductionmentioning
confidence: 82%
“…This hydration leads to the formation of quite unusual chemical compounds, such as (H 3 O)Ln 3 F 10 (Ln = rare-earth elements) [30,42], and causes luminescence quenching by OH − groups and/or water molecules in freshly prepared nanopowders. It is not easy to remove water that has been adsorbed on nanoparticle surfaces but their pyrohydrolysis under thermal treatment can be prevented by forming compounds with fluorinating agents, such as BaF 2 •HF [37] or ammonium fluoride solid solutions in strontium fluoride, Sr 1−x−y Ln x (NH 4 ) y F 2+x−y [34,38,39].…”
Section: Introductionmentioning
confidence: 99%
“…Твердые растворы на основе фторида стронция были синтезированы методом соосаждения из водных растворов по методике, представленной в [29,[32][33][34]. Небольшое отличие заключалось в том, что проводилось покапельное добавление водного раствора фторида аммония (0.16 mol), взятого с 7% избытком, в раствор нитратов стронция и РЗ элементов (0.08 mol).…”
Section: характеристика объектов и методов исследованияunclassified
“…В результате были получены взвеси порошков, которые подвергали трехстадийной отмывке от непрореагировавших нитратов с контролем отмывки посредством теста с дифениламином. Как было нами установлено ранее [29][30][31]34,35], использование фторида аммония приводит к образованию твердого раствора с общей формулой Sr 1−x −y R x (NH 4 ) y F 2+x −y , который после термообработки разлагается с получением целевого твердого раствора Sr 1−x R x F 2+x и фторирующего агента HF. С помощью данного подхода воспроизводимо синтезируются однофазные твердые растворы с флюоритовой структурой на основе фторида стронция, обладающие интенсивной апконверсионной люминесценцией [31].…”
Section: характеристика объектов и методов исследованияunclassified
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