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Journal Articles

Densified low-hygroscopic form of P$$_{2}$$O$$_{5}$$ glass

Brazhkin, V. V.*; Akola, J.*; Katayama, Yoshinori; Kohara, Shinji*; Kondrin, M. V.*; Lyapin, A. G.*; Lyapin, S. G.*; Tricot, G.*; Yagafarov, O.

Journal of Materials Chemistry, 21(28), p.10442 - 10447, 2011/07

 Times Cited Count:14 Percentile:44.78(Chemistry, Physical)

P$$_{2}$$O$$_{5}$$ compound is an archetypical glass-forming oxide with a high hygroscopicity. We found that the quenching from the P$$_{2}$$O$$_{5}$$melt under ultrahigh pressures enables obtaining densified P$$_{2}$$O$$_{5}$$ glasses with a residual densification up to 12% at normal conditions. These glasses have a low hygroscopicity and can exist under air conditions for several weeks. An examination of the structure of the new form of P$$_{2}$$O$$_{5}$$ glass reveals a cardinal decrease of the volume of nanovoids in the glassy matrix.

Oral presentation

Void distribution in oxide glasses

Suzuya, Kentaro; Kohara, Shinji*; Takata, Masaki*; Ono, Hideo*; Akola, J.*

no journal, , 

Void distributions in various oxide glasses were analyzed using atomic configurations obtained by reverse Monte Carlo modeling on the basis of high-energy X-ray and pulsed-neutron diffraction data. We found that silica glass exhibits about 30% of volume assigned to the void. Furthermore we discuss the relationship between void and glass forming ability.

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