Structural organization and thermal properties of the Sb2O3–SbPO4glass system

Nalin, Marcelo; Messaddeq, Younès; Ribeiro, Sidney J. L.; Poulain, Marcel; Briois, Valérie; Brunklaus, Gunther; Rosenhahn, Carsten; Mosel, Bernd D.; Eckert, Hellmut

doi:10.1039/b406075j

Cited by 69 publications

(93 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…7 The solid phases of Sb 2 O 3 include an amorphous (glassy) and three crystalline structures, senarmontite (α-Sb 2 O 3 ), valentinite (β-Sb 2 O 3 ), and a very recently found new phase (γ -Sb 2 O 3 ). Senarmontite is a cubic "molecular" crystal composed of spherical-top Sb 4 O 6 "dimers" that forms an adamantanoid cage with T d symmetry and is the predominant form below 570 • C. 5,[8][9][10] Valentinite has an orthorhombic unit cell, consisting of chains of four-membered rings formed by SbO 3 pyramids, and is the predominant form above 570 • C. 11 Finally, γ -Sb 2 O 3 is an orthorhombic metastable phase recently obtained after a high-pressure and high-temperature treatment of both senarmontite and valentinite. 12 The structure of senarmontite at ambient pressure is shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

Structural and vibrational study of cubic Sb2O3under high pressure

et al. 2012

Self Cite

View full text Add to dashboard Cite

We report an experimental and theoretical study of antimony oxide (Sb 2 O 3 ) in its cubic phase (senarmontite) under high pressure. X-ray diffraction and Raman scattering measurements up to 18 and 25 GPa, respectively, have been complemented with ab initio total-energy and lattice-dynamics calculations. X-ray diffraction measurements do not provide evidence of a space-group symmetry change in senarmontite up to 18 GPa. However, Raman scattering measurements evidence changes in the pressure coefficients of the Raman mode frequencies at 3.5 and 10 GPa, respectively. The behavior of the Raman modes with increasing pressure up to 25 GPa is fully reproduced by the lattice-dynamics calculations in cubic Sb 2 O 3 . Therefore, the combined analysis of both experiments and lattice-dynamics calculations suggest the occurrence of two isostructural phase transformations at 3.5 and 10 GPa, respectively. Total-energy calculations show that the isostructural phase transformations occur through local atomic displacements in which senarmontite loses its molecular character to become a three-dimensional solid. In addition, our calculations provide evidence that cubic senarmontite cannot undergo a phase transition to orthorhombic valentinite at high pressure, and that a phase transition to a β-Bi 2 O 3 -type structure is possible above 25 GPa.

show abstract

Section: Introductionmentioning

confidence: 99%

Structural and vibrational study of cubic Sb2O3under high pressure

et al. 2012

Self Cite

View full text Add to dashboard Cite

show abstract

“…The spectrum is limited to 400 cm -1 , as KBr is no more transparent beyond this frequency. The comparison with bulk glass shows that the absorption observed between 1500 and 2500 cm -1 corresponds to the first overtones of the fundamental absorption bands of the PO 4 tetrahedra [14,15].…”

Section: Bulk Samplesmentioning

confidence: 99%

“…It is limited to 4.5 micrometers in the mid-infrared by the first overtone of the P-O vibrations, as this has been shown in fluoride glasses doped with phosphates [14,15,29].…”

mentioning

confidence: 99%

Fluorophosphate glasses containing manganese

Djouama

Boutarfaïa

Poulain

2008

Journal of Physics and Chemistry of Solids

Self Cite

View full text Add to dashboard Cite

New fluorophosphate glasses based on MnF 2 , NaPO 3 and MF n (M = Zn 2+ , Sr 2+ , Mg 2+ , Ba 2+ , Li + , Na + and K + ) have been synthesised and characterized. Large vitreous areas were observed. Samples of 4 mm in thickness have been obtained. These glasses are easy to prepare and stable in ambient air. Depending on the composition and the nature of the M cation, glass transition temperature, Tg, lies between 230 and 314°C, crystallisation temperature, Tx is between 320 and 475°C. These glasses are pink coloured, and infrared transmission extends up to 4.5 m with extrinsic OH -absorption band at 3200 cm -1 and other bands around 2200 and 1600 cm -1 that relate to PO 4 tetrahedron vibration. Other physical properties including density, microhardness, Young modulus, thermal expansion and refractive index were investigated and correlated to composition.

show abstract

“…These materials present low phonon energy (~600-700 cm -1 ) due to low energy stretching vibrations of Sb-O-Sb band 20,21 , high linear and nonlinear refractive indexes [3][4][5] and the possibility of modulation of their optical constants, (refractive index, n, and absorption coefficient, ) under laser irradiation 22 what make them promising materials for 3D optical storage 23,24 as well as, for holographic data storage 25 .…”

Section: Introductionmentioning

confidence: 99%

“…Antimony oxide based glasses have been the subject of interesting studies in the last years [1][2][3][4][5][6][7][8][9][10][11] and have been claimed to be useful in important fields of the materials science, such as photonics [12][13][14][15][16] and plasmonics [17][18][19] . These materials present low phonon energy (~600-700 cm -1 ) due to low energy stretching vibrations of Sb-O-Sb band 20,21 , high linear and nonlinear refractive indexes [3][4][5] and the possibility of modulation of their optical constants, (refractive index, n, and absorption coefficient, ) under laser irradiation 22 what make them promising materials for 3D optical storage 23,24 as well as, for holographic data storage 25 .…”

Section: Introductionmentioning

confidence: 99%

Glass formation in the Sb2O3-SbPO4-WO3 system

et al. 2017

View full text Add to dashboard Cite

(x) , with composition 0.1  x  0.5 (in mol %) were studied. The structural changes due to the replacement of Sb 2 O 3 by WO 3 have been investigated. It was found that the incorporation of WO 3 enhances the thermal stability of the glasses against devitrification when compared to the binary Sb 2 O 3(0.6) -SbPO 4(0.4) composition. The connectivity of the network increases with WO 3 content which is consistent with the high values of the glass transition temperature. Raman studies suggest that WO 3 incorporation breaks the primary network, constituted by antimony oxide, while a second network containing WO 6 octahedral units is built up. Thermal and structural properties were evaluated by differential scanning calorimetry, infrared and Raman spectroscopies, 31 P Magic Angle Spinning NMR and X-ray absorption near edge structure (XANES) at L 1 and L 3 edges of Sb and L 1 edge of W atoms.

show abstract

Structural organization and thermal properties of the Sb₂O₃–SbPO₄glass system

Cited by 69 publications

References 26 publications

Structural and vibrational study of cubic Sb2O3under high pressure

Structural and vibrational study of cubic Sb2O3under high pressure

Fluorophosphate glasses containing manganese

Glass formation in the Sb2O3-SbPO4-WO3 system

Contact Info

Product

Resources

About