The effect of gadolinium addition on the surface structure of Bi 2 O 3 –GeO 2  glasses and vitroceramics | Zendy

Simon V. | Zendy; Ponta O. | Zendy; Simon S. | Zendy; Udvar D. A. | Zendy; Neumann M. | Zendy

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The effect of gadolinium addition on the surface structure of Bi 2 O 3 –GeO 2 glasses and vitroceramics

Author(s) -

Simon V.,

Ponta O.,

Simon S.,

Udvar D. A.,

Neumann M.

Publication year - 2008

Publication title -

physica status solidi (a)

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.532

H-Index - 104

eISSN - 1862-6319

pISSN - 1862-6300

DOI - 10.1002/pssa.200723269

Subject(s) - gadolinium , x ray photoelectron spectroscopy , crystallization , oxide , materials science , analytical chemistry (journal) , metal , crystallography , chemistry , mineralogy , nuclear magnetic resonance , metallurgy , physics , organic chemistry , chromatography

Heavy metal oxide glasses and vitroceramics belonging to the Bi 2 O 3 –GeO 2 –Gd 2 O 3 system are investigated. The changes induced by heat treatment in the elemental composition on sample surfaces are related to the local order changes. O 1s and Bi 4f core level X‐ray photoelectron spectra evidence the local order changes caused by gadolinium addition to the Bi 2 O 3 –GeO 2 matrix and by partial crystallisation of the precursor glass samples. The addition of gadolinium to the Bi 2 O 3 –GeO 2 glass matrix leads to a reduction of the number of bridging oxygens and a depolymerisation of the glass structure. The number of bridging oxygens increases on heat treatment of the samples. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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