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Synthèse, croissance et caractérisation des cristaux

Synthèse, croissance et caractérisation des cristaux

Dr. A. Ali Fatima / Dr. A. Nagamani Prabu / Dr. S. Nazarath Begum

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Editorial:
KS OmniScriptum Publishing
Año de edición:
2026
Materia
Ciencia: cuestiones generales
ISBN:
9786630215878
113,09 €
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Sobre IBD

Le sulfate de triglycine (TGS) [(NH₂CH₂COOH)₃H₂SO₄] est l’un des matériaux ferroélectriques les plus utiles ; il trouve de nombreuses applications en tant que détecteurs à température ambiante, ainsi que dans la fabrication de condensateurs, de transducteurs, de vidicons médicaux et de capteurs, etc.Dans le cadre de ce travail, nous avons tenté d’introduire séparément certains acides organiques et inorganiques, tels que l’acide nitrique, l’acide picrique, l’acide perchlorique et l’acide salicylique, dans des cristaux de TGS en tant qu’additifs afin de modifier leurs propriétés physiques et chimiques. Les monocristaux ont été obtenus par une technique d’évaporation lente à température ambiante. La densité a été mesurée à l’aide de la technique de flottation et des spectres de rayons X à dispersion d’énergie ont été enregistrés afin de comprendre la composition chimique des cristaux obtenus.Le comportement optique des cristaux obtenus a été étudié par analyse spectrale de transmission UV-visible, et les constantes optiques linéaires telles que la réflectance, le coefficient d’extinction, l’indice de réfraction et la bande interdite des cristaux obtenus ont été déterminées. Des analyses thermogravimétriques (TG) et thermiques différentielles (DTA) ont été réalisées afin de caractériser la stabilité thermique des cristaux obtenus.

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