Meeting experimental challenges to physics of network glasses: assessing role of sample homogeneity

Details Meeting experimental challenges to physics of network glasses: assessing role of sample homogeneity Meeting experimental challenges to physics of network glasses: assessing role of sample homogeneity

2011-07-20

arxiv.org/abs/1107.3901v2

Physics

Condensed Matter

Disordered Systems and Neural Networks

Scientific paper

We introduce a Raman profiling method to track homogenization of Ge$_x$Se$_{100-x}$ melts in real time, and show that 2 gram melts reacted at 950{\deg}C in high vacuum homogenize in 168 hours on a scale of 10{\mu}m. Homogenization of melts is precursive to self-organization of glasses. In the present glasses, compositional variation of Raman active corner-sharing mode frequency of GeSe$_4$ units, molar volumes, and the enthalpy of relaxation at Tg, reveal the rigidity (xc(1)= 19.5(3)%) and the stress (xc(2) = 26.0(3)%) transitions to be rather sharp ({\Delta}x < 0.6%). These abrupt elastic phase transitions are intrinsic to these materials and have a direct bearing on physics of glasses.

Affiliated with

Also associated with

No associations

Rating

Meeting experimental challenges to physics of network glasses: assessing role of sample homogeneity does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Meeting experimental challenges to physics of network glasses: assessing role of sample homogeneity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Meeting experimental challenges to physics of network glasses: assessing role of sample homogeneity will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-34414