期刊
JOURNAL OF APPLIED PHYSICS
卷 108, 期 6, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3487473
关键词
barium compounds; crystallisation; glass; glass structure; glass transition; heat treatment; nucleation; Raman spectra; supercooling; transmission electron microscopy; vitreous state
资金
- Ministry of Education, Culture, Sports, Science and Technology of the Japanese Government
- Grants-in-Aid for Scientific Research [22760505] Funding Source: KAKEN
In situ observation of Raman scattering in glassy sanbornite (BaSi(2)O(5)) showing homogeneous nucleation was performed during heating to investigate the structural variation in the glassy/supercooled-liquid phase in the pre- and postnucleation regimes. It was observed that the formation of Q(2) units accelerates around 400 degrees C, which is well below T(g), just after structural relaxation in the Ba-enriched/-cohesive region. The relation between the structural variation and the nucleation trend in glassy sanbornite was also discussed on the basis of transmission electron microscopy and in situ Raman results and previous Boson observation [Takahashi et al. Appl. Phys. Lett. 94, 211907 (2009). (C) 2010 American Institute of Physics. [doi:10.1063/1.3487473]
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