International Science Community Association Research Journal of Physical Sciences 14 2 2026 08 4 Study of Energetic diffusion of Zn-modified Ge-Sb-Te Chalcogenide glasses 25 28 EN Yombouno Faya Maurice 1 Département de Physique. Université de N’Zérékoré, BP 50, N’Zérékoré. Guinée Bayo Ibrahima 2 Centre de Recherche Marine et Côtière, Conakry, Guinée Summy PéLououéa 3 Département de Gestion des Ressources Naturelles. Université de N’Zérékoré. BP 50, N’Zérékoré, Guinée Keita Oumar 4 Département d’Hydrologie. Université de N’Zérékoré. BP 50, N’Zérékoré, Guinée Agbazo Noukpo 5 Département d’Hydrologie. Université de N’Zérékoré. BP 50, N’Zérékoré, Guinée Agrawal Richa 1 Department of Physics, G. N. Khalsa College, Matunga, Mumbai, India Urs Bharathi Shettahalli Nagaraje 1 Department of Mathematics, Government Science College, Chitradurga, Karnataka, India Krishnamurthy Srikumar 2 Department of Mathematics, School of Engineering, Dayananda Sagar University, Bangalore, Karnataka, India Tiwari Saurabh Kumar 1 Department of Physics, Sri Ram Kumar Bhartiya Gyan Devi Mahavidhyalaya Phaphund, Auraiya, Uttar Pradesh, India Dubey Prakash 2 Department of Physics, Janta PG College Bakewar Etawah, Uttar Pradesh, India Saxena Nirupma 3 Department of Physics, Dayanand Brajendra Swarup College Govind Nagar, Kanpur, Uttar Pradesh, India > Research Article 2026 5 20 2026 08 4 In the present study we have discussed, how the energetic parameter (A) influences by same amount of Zinc in the two different Ge-Sb-Te glassy systems like (Ge8Sb2Te11)100−xZnx and (Ge2Sb2Te5)100−xZnx where X = 0, 1, 2, 5, 10, 25. The effect of Zn modified Ge-Sb-Te chalcogenide glasses have been studied by using bond constraint and rigidity percolation theory. By using topological theory which is exhibited by covalent network glasses, the finding results has been discussed. The optical gap diffusion of Zn modified Ge-Sb-Te glassy systems is also discussed on the basis of topological constraints theory. Copyright@ International Science Community Association