Elaboration, Thermal and Structural Approach of Manganese Phosphate Glasses Inside the System of K2O-MnO2-P2O5

M Jerroudi,L Bejjit,P Lazor,M Haddad,B Manoun,L Bih,S Yousfi

doi:10.1088/1757-899x/783/1/012003

Abstract

Glasses of the composition (50-x/2) K2O-xMnO2-(50-x/2) P2O5 with (0≤x≤30%mol), have been prepared by standard melt quenching procedures. The amorphous state of the glasses is evidenced using the X-Ray diffraction. Their physical properties were characterized by thermal analysis and density measurements. The density and the glass transition temperature increase with increasing in MnO2 content. To study the structural role of MnO2 oxide in studied glasses, the FTIR and Raman spectroscopies have been employed. It was highlighted that the presence of MnO2 allows the depolymerisation of the phosphate chains and formation of covalent bonds P-O-Mn, which replace P-O-P and P=O linkages.

Highlights

This article will introduce manganese phosphates glasses as consider among the glasses containing transitions metal ions (TMI), which have drawn much attention, because of their electric, optical and magnetic properties
We have investigated phosphate glasses belonging to the ternary K2O-MnO2-P2O5 system
The amorphous state of the samples was confirmed by X-Ray diffraction

Summary

Introduction

This article will introduce manganese phosphates glasses as consider among the glasses containing transitions metal ions (TMI), which have drawn much attention, because of their electric, optical and magnetic properties. These properties come from the presence of TMI in different multivalent states [1]. The most interesting glass structure modifier is manganese; it was used in metallurgy, as a component and alloy addition increasing their hardness and resistance to abrasion [2] It was reported in the literature, that the manganese ions exist in different valence states with different coordination in glasses matrices [3, 4]. Due to their interesting properties and their coordination, the glasses containing manganese have been subject of several publications [5,1,6]

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Conclusion