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 Pis'ma v Zh. Èksper. Teoret. Fiz., 2009, Volume 89, Issue 5, Pages 285–290 (Mi jetpl377)

CONDENSED MATTER

Investigation of polyamorphism in compressed $\mathrm{Â_2Î_3}$ glass by the direct measurement of the density

V. V. Brazhkina, O. B. Tsioka, Y. Katayamab

a Institute for High Pressure Physics, Russian Academy of Sciences
b Japan Atomic Energy Agency, Hyogo, 679-5143, Japan

Abstract: Precise measurements of the relative volume change of vitreous B2O3 have been performed by the strain-gauge technique at hydrostatic pressures up to 9 GPa. The features of the strain-gauge technique are analyzed and the specificity of the measurements of “relaxed” and “unrelaxed” bulk moduli is discussed. Smeared anomalies of compressibility (at P > 0.5 GPa and P > 5 GPa) and logarithmic relaxation of the glass density are observed. A significant (by several times!) difference has been revealed between the relaxed bulk modulus of glass obtained from the volume measurements and the unrelaxed modulus estimated from the Brillouin spectroscopic data. The measurements of the relative volume change under compression together with the previous structure investigations and computer simulation results reveal the basic features of the phase transitions in B2O3 glass. Both direct and reverse transitions are smeared in pressure. The residual densification in glass is not associated with change in the short-range order.

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English version:
Journal of Experimental and Theoretical Physics Letters, 2009, 89:5, 244–248

Bibliographic databases:

PACS: 61.43.Fs, 62.50.-p, 64.70.kj

Citation: V. V. Brazhkin, O. B. Tsiok, Y. Katayama, “Investigation of polyamorphism in compressed $\mathrm{Â_2Î_3}$ glass by the direct measurement of the density”, Pis'ma v Zh. Èksper. Teoret. Fiz., 89:5 (2009), 285–290; JETP Letters, 89:5 (2009), 244–248

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Citing articles on Google Scholar: Russian citations, English citations
Related articles on Google Scholar: Russian articles, English articles

This publication is cited in the following articles:
1. V. V. Brazhkin, ““Lost in Translation”: what do the negative values of effective Gr$\ddotu$neisen coefficients mean in shock-wave experiments? (Extended comment on “Shock compression of porous metals and silicates” by A.B. Medvedev and R.F. Trunin, Phys. Usp. 55 773 (2012))”, Phys. Usp., 55:8 (2012), 790–795
2. Zeidler A., Wezka K., Whittaker D.A.J., Salmon Ph.S., Baroni A., Klotz S., Fischer H.E., Wilding M.C., Bull C.L., Tucker M.G., Salanne M., Ferlat G., Micoulaut M., “Density-Driven Structural Transformations in B2O3 Glass”, Phys. Rev. B, 90:2 (2014), 024206
3. Kurakevych O.O., Solozhenko V.L., “Thermoelastic Equation of State of Boron Suboxide B6O Up To 6 Gpa and 2700 K: Simplified Anderson-Gruneisen Model and Thermodynamic Consistency”, J. Superhard Mater., 36:4 (2014), 270–278
4. Salmon Ph.S., Zeidler A., “Networks Under Pressure: the Development of in Situ High-Pressure Neutron Diffraction For Glassy and Liquid Materials”, J. Phys.-Condes. Matter, 27:13 (2015), 133201
5. Solozhenko V.L., Kurakevych O.O., Le Godec Ya., Brazhkin V.V., “Thermodynamically Consistent P-T Phase Diagram of Boron Oxide B2O3 By in Situ Probing and Thermodynamic Analysis”, J. Phys. Chem. C, 119:35 (2015), 20600–20605
6. Brazhkin V.V., Bychkov E., Tsiok O.B., “Direct Volumetric Study of High-Pressure Driven Polyamorphism and Relaxation in the Glassy Germanium Chalcogenides”, J. Phys. Chem. B, 120:2 (2016), 358–363
7. Brazhkin V.V., Bychkov E., Tsiok O.B., “High-precision measurements of the compressibility of chalcogenide glasses at a hydrostatic pressure up to 9 GPa”, J. Exp. Theor. Phys., 123:2 (2016), 308–317
8. Brazhkin V.V., Bychkov E., Tsiok O.B., Phys. Rev. B, 95:5 (2017), 054205
9. Brazhkin V.V., Bychkov E., Tsiok O.B., “High-Precision Measurements of the Compressibility and the Electrical Resistivity of Bulk G-as2Te3 Glasses At a Hydrostatic Pressure Up to 8.5 Gpa”, J. Exp. Theor. Phys., 125:3 (2017), 451–464
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