Anomalous boson behavior and nanometric heterogeneity in glassy fresnoite

Yoshihiro Takahashi, Minoru Osada, Hirokazu Masai, Takumi Fujiwara

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

In-situ observation of the boson peak, ωBP, of as-quenched and annealed glassy Ba2TiGe2O8 (BTG) and Ba2TiSi2O8 (BTS) was performed during a heating process. Although annealed glassy BTG and BTS indicated a monotonous decrease in ωBP with temperature, the as-quenched varieties, which Included internal stress, revealed anomalous boson behavior at ∼600°C, lower than each one's glass-transition temperature. It was suggested that the ωBP anomaly was caused by β-relaxation. This experimental result also supports the inhomogeneous structure (or cluster) model of glass.

Original languageEnglish
Pages (from-to)1219011-1219013
Number of pages3
JournalApplied Physics Express
Volume1
Issue number12
DOIs
Publication statusPublished - 2008 Dec
Externally publishedYes

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Bosons
bosons
Industrial heating
glass transition temperature
residual stress
Residual stresses
anomalies
Glass
heating
glass
Temperature
temperature
Glass transition temperature

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Anomalous boson behavior and nanometric heterogeneity in glassy fresnoite. / Takahashi, Yoshihiro; Osada, Minoru; Masai, Hirokazu; Fujiwara, Takumi.

In: Applied Physics Express, Vol. 1, No. 12, 12.2008, p. 1219011-1219013.

Research output: Contribution to journalArticle

Takahashi, Y, Osada, M, Masai, H & Fujiwara, T 2008, 'Anomalous boson behavior and nanometric heterogeneity in glassy fresnoite', Applied Physics Express, vol. 1, no. 12, pp. 1219011-1219013. https://doi.org/10.1143/APEX.1.121901
Takahashi, Yoshihiro ; Osada, Minoru ; Masai, Hirokazu ; Fujiwara, Takumi. / Anomalous boson behavior and nanometric heterogeneity in glassy fresnoite. In: Applied Physics Express. 2008 ; Vol. 1, No. 12. pp. 1219011-1219013.
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