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Caractérisation structurale et analyse des nanophosphores Sr2SiO4

Caractérisation structurale et analyse des nanophosphores Sr2SiO4

Kavyashree Dasappa / Manjunath C

53,29 €
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Editorial:
KS OmniScriptum Publishing
Año de edición:
2024
Materia
Empresa y gestión
ISBN:
9786207686186
53,29 €
IVA incluido
Disponible

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Des nanophosphores de silicate de strontium (Sr2SiO4) ont été préparés par la méthode de synthèse par combustion en solution et ont été caractérisés par diffraction des rayons X, SEM et TEM. L’optimisation structurelle des nanophosphores Sr2SiO4 a été réalisée en faisant varier la température, le combustible et la température de calcination. La condition optimale pour le phosphore synthétisé en utilisant de la glycine comme combustible, calcinée à 900° C pendant 3 heures, présentait une meilleure cristallinité. Les conditions optimales ont été utilisées pour synthétiser les phosphores Sr2SiO4:Sm3+, Sr2SiO4:Eu3+ et Sr2SiO4:Dy3+. Les XRD de tous les luminophores synthétisés étaient bien indexés avec la carte JCPDS No.39-1256 qui correspond à une structure orthorhombique. Les diagrammes de Scherrer et de WH ont été utilisés pour déterminer la taille moyenne des cristallites, qui s’est avérée être d’environ 40 nm, 43 nm et 38 nm pour le Sr2SiO4 dopé par Sm3+, Eu3+ et Dy3+, respectivement. Une analyse structurale détaillée du Sr2SiO4 dopé au Dy3+ a été étudiée.

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Otros libros del autor

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