{"title":"Environmentally safe high density lanthanum doped glasses for radiation shielding windows","authors":"Anchal Pathania , Neetu Verma , Rohit Mehra , P. Nandi , Gopi Sharma , Sandeep Kaur , Richa Mishra , B. Sanyal","doi":"10.1016/j.jnoncrysol.2025.123649","DOIUrl":null,"url":null,"abstract":"<div><div>In this present work, a series of lead-free xLa<sub>2</sub>O<sub>3</sub>–30xBi<sub>2</sub>O<sub>3</sub>-(100-x)B<sub>2</sub>O<sub>3</sub>, where <em>x</em> = 0, 3, 6, and 9 mol % glass systems have been studied for Radiation Shielding Windows (RSWs) applications. The prepared glass shows high densities from 5.05 to 5.46 g/cc which is an important aspect for RSW. The Vicker's hardness and UV–Vis spectroscopy performed before and after irradiation shows that 6 mol % of lanthanum is most stable composition for radiation shielding after exposure to gamma radiation of 1 kGy. The radiation-induced absorption coefficients at different visible wavelengths are determined using transmission data after the irradiation dose. The glass with 6 mol % doping of La<sub>2</sub>O<sub>3</sub> has the least radiation-induced absorption coefficient among all prepared glass samples. The structural modifications have been confirmed with the help of Raman spectroscopy. The obtained results suggest that La<sub>2</sub>O<sub>3</sub> doping enhances the radiation stability of glass samples. Therefore, the developed lanthanum-doped bismuth-borate glass could find its application as lead-free RSW glass as an alternative to high lead-containing glass.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"666 ","pages":"Article 123649"},"PeriodicalIF":3.5000,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Non-crystalline Solids","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0022309325002649","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, CERAMICS","Score":null,"Total":0}
引用次数: 0
Abstract
In this present work, a series of lead-free xLa2O3–30xBi2O3-(100-x)B2O3, where x = 0, 3, 6, and 9 mol % glass systems have been studied for Radiation Shielding Windows (RSWs) applications. The prepared glass shows high densities from 5.05 to 5.46 g/cc which is an important aspect for RSW. The Vicker's hardness and UV–Vis spectroscopy performed before and after irradiation shows that 6 mol % of lanthanum is most stable composition for radiation shielding after exposure to gamma radiation of 1 kGy. The radiation-induced absorption coefficients at different visible wavelengths are determined using transmission data after the irradiation dose. The glass with 6 mol % doping of La2O3 has the least radiation-induced absorption coefficient among all prepared glass samples. The structural modifications have been confirmed with the help of Raman spectroscopy. The obtained results suggest that La2O3 doping enhances the radiation stability of glass samples. Therefore, the developed lanthanum-doped bismuth-borate glass could find its application as lead-free RSW glass as an alternative to high lead-containing glass.
期刊介绍:
The Journal of Non-Crystalline Solids publishes review articles, research papers, and Letters to the Editor on amorphous and glassy materials, including inorganic, organic, polymeric, hybrid and metallic systems. Papers on partially glassy materials, such as glass-ceramics and glass-matrix composites, and papers involving the liquid state are also included in so far as the properties of the liquid are relevant for the formation of the solid.
In all cases the papers must demonstrate both novelty and importance to the field, by way of significant advances in understanding or application of non-crystalline solids; in the case of Letters, a compelling case must also be made for expedited handling.