Research on effect of ZrO_2 on thermal stability and structure of Ga/In based fluoride glasses

【Author】

ZENG Jie~a,ZHU Jiqian~(a,b),ZHOU Kai~a,LIU Junfang~(b,c) a Department of Physics,Tongji University,Shanghai 200092,China b School of Materials Science and Engineering,Tongji University,Shanghai 200092,China c Key Laboratory of Advanced Civil Engineering Materials of the Ministry of Education,Tongji University,Shanghai 200092,China

【Abstract】

<正>A systematic investigation on glass formation in the 20GaF_3-15InF_3-20CdF_2-15ZnF_2-(20-x)PbF_2-10SnF_2-xZrO_2(xZ-GICZPS)system(x=0, 2,4,6,8 in mol.%)was carried out.These glasses were characterized by differential scanning calorimetry(DSC),infrared(IR)spectra and Raman spectra.The DSC results show that the thermal stability is affected by PbF_2 and ZrO_2 contents.With increasing ZrO_2 content,the thermal stability is improved at first and then reduced,which is proved by thermal stability factors AT and S determined by DSC.As a result, the 20GaF_3-15InF_3-20CdF_2-15ZnF_2-14PbF_2-10SnF_2-6ZrO_2 glass shows the largest parametersΔT and S,processing the most excellent thermal stability.Analyses of IR spectra reveal that glasses have broad transparency range in IR region.According to Raman spectra,the glass network structures are basically composed of mixed[(In,Ga)F_6]and In[O,F]_6 units and ZrO_2 mainly acts as network modifier in this system.

【Keywords】

Ga/In based fluoride glasses;;thermal stability;;IR spectra;;Raman spectra

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