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标题：Structural and Physical Properties of <svg style="vertical-align:-4.67648pt;width:167.96249px;" id="M1" height="21.1" version="1.1" viewBox="0 0 167.96249 21.1" width="167.96249" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,21.1)"> <g transform="translate(72,-55.12)"> <text transform="matrix(1,0,0,-1,-71.95,59.83)"> <tspan style="font-size: 17.93px; " x="0" y="0">F</tspan> <tspan style="font-size: 17.93px; " x="9.9707479" y="0">e</tspan> </text> <text transform="matrix(1,0,0,-1,-54.02,55.34)"> <tspan style="font-size: 12.55px; " x="0" y="0">𝟐</tspan> </text> <text transform="matrix(1,0,0,-1,-47.24,59.83)"> <tspan style="font-size: 17.93px; " x="0" y="0">O</tspan> </text> <text transform="matrix(1,0,0,-1,-34.3,55.34)"> <tspan style="font-size: 12.55px; " x="0" y="0">𝟑</tspan> </text> <text transform="matrix(1,0,0,-1,-27.52,59.83)"> <tspan style="font-size: 17.93px; " x="0" y="0">-</tspan> <tspan style="font-size: 17.93px; " x="5.9716892" y="0">B</tspan> </text> <text transform="matrix(1,0,0,-1,-9.59,55.34)"> <tspan style="font-size: 12.55px; " x="0" y="0">𝟐</tspan> </text> <text transform="matrix(1,0,0,-1,-2.81,59.83)"> <tspan style="font-size: 17.93px; " x="0" y="0">O</tspan> </text> <text transform="matrix(1,0,0,-1,10.13,55.34)"> <tspan style="font-size: 12.55px; " x="0" y="0">𝟑</tspan> </text> <text transform="matrix(1,0,0,-1,16.91,59.83)"> <tspan style="font-size: 17.93px; " x="0" y="0">-</tspan> <tspan style="font-size: 17.93px; " x="5.9716892" y="0">V</tspan> </text> <text transform="matrix(1,0,0,-1,35.83,55.34)"> <tspan style="font-size: 12.55px; " x="0" y="0">𝟐</tspan> </text> <text transform="matrix(1,0,0,-1,42.6,59.83)"> <tspan style="font-size: 17.93px; " x="0" y="0">O</tspan> </text> <text transform="matrix(1,0,0,-1,55.55,55.34)"> <tspan style="font-size: 12.55px; " x="0" y="0">𝟓</tspan> </text> </g> </g> </svg> Glasses
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作者：Virender Kundu ; R. L. Dhiman ; A. S. Maan 等
期刊名称：Advances in Condensed Matter Physics
印刷版ISSN：1687-8108
电子版ISSN：1687-8124
出版年度：2008
卷号：2008
DOI：10.1155/2008/937054
出版社：Hindawi Publishing Corporation
摘要：The structural and physical properties of 𝑥Fe2O3-(40-x) B2O3-60V2O5(0≤𝑥≤20) glass system have been investigated. The samples were prepared by normal melt-quench technique. The structural changes were inferred by means of FTIR by monitoring the infrared (IR) spectra in the spectral range 600–4000 cm−1. The absence of boroxol ring (806 cm−1) in the present glass system suggested that these glasses consist of randomly connected BO3 and BO4 units. The conversion of BO3 to BO4 and VO5 to VO4 tetrahedra along with the formation of non-bridging oxygen's (NBOs) attached to boron and vanadium takes place in the glasses under investigation. The density and molar volume of the present glass system were found to depend on Fe2O3 content. DC conductivity of the glass system has been determined in the temperature range 310–500 K. It was found that the general behavior of electrical conductivity was similar for all glass compositions and found to increase with increasing iron content. The parameters such as activation energy, average separation between transition metal ions (TMIs), polaron radius, and so forth have been calculated in adiabatic region and are found consistent with Mott's model of phonon-assisted polaronic hopping.