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arXiv 0803.4109cond-mat.dis-nn
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氧化物玻璃中中间相的突变边界与空间填充

Abrupt boundaries of intermediate phases and space filling in oxide glasses

K. Rompicharla, D. I. Novita, Ping Chen, P. Boolchand, M. Micoulaut, W. Huff

摘要:

对大块(Na 2 O)x(GeO 2)1-x玻璃的调制DSC测量显示出在14% < x < 19%苏打范围内的尖锐可逆性窗口,这与摩尔体积的宽的全局最小值很好地相关。拉曼和红外反射TO和LO模式频率在xc(1)= 14%(应力转变)和xc(2)= 19%(刚性转变)之间表现出异常,光学弹性幂律证实了转变的性质。双折射率测量戏剧性地显示了可逆性窗口中中间相的宏观无应力性质。

英文摘要:

Modulated DSC measurements on bulk (Na2O)x(GeO2)1-x glasses show a sharp reversibility window in the 14% < x < 19% soda range, which correlates well with a broad global minimum in molar volumes. Raman and IR reflectance TO and LO mode frequencies exhibit anomalies between xc(1) = 14% (stress transition) and xc(2) = 19% (rigidity transition), with optical elasticity power-laws confirming the nature of the transitions . Birefringence measurements dramatize the macroscopically stress-free nature of the Intermediate Phase in the reversibility window.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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