Effect of structure and composition on the DC-conductivity in calcium phosphate glasses of the type x CaO⋯(55−x) M2O⋯45 P2O5 (M=Na, K, Rb, Cs)

2015 ◽  
Vol 430 ◽  
pp. 73-78 ◽  
Author(s):  
Johannes Martin ◽  
Martin Schäfer ◽  
Karl-Michael Weitzel
Keyword(s):  
Calcium Phosphate ◽  
Phosphate Glasses ◽  
Dc Conductivity ◽  
Effect Of Structure

Preparation of Calcium Phosphate Glasses Containing Nb2O5 and TiO2

2018 ◽  
Vol 782 ◽  
pp. 47-52
Author(s):  
Patrícia Suemi Sato ◽  
Hirotaka Maeda ◽  
Akiko Obata ◽  
Toshihiro Kasuga
Keyword(s):  
Controlled Release ◽  
Calcium Phosphate ◽  
Calcium Titanate ◽  
Chemical Durability ◽  
Phosphate Glasses ◽  
Dissolution Test ◽  
Buffer Solution ◽  
High Chemical ◽  
Positive Effects ◽  
Tris Buffer Solution

60CaO-30P2O5-(10 ̶ x)Nb2O5-xTiO2 (x = 0 ~ 10, mol%) glasses were prepared in order to obtain biomaterials with high chemical durability and therapeutic ions releasability. Dissolution test of these glasses using Tris buffer solution showed the controlled release of niobate ions from Nb2O5-containing glasses and the formation of calcium titanate in some of them. These behavior might induce positive effects for bone regeneration.

Raman spectroscopy of calcium phosphate glasses with varying calcium oxide modifier concentrations

1991 ◽  
Vol 3 (1) ◽  
pp. 195-200 ◽  
Author(s):  
Jeanne E. Pemberton ◽  
Lida Latifzadeh ◽  
Joseph P. Fletcher ◽  
Subhash H. Risbud
Keyword(s):  
Raman Spectroscopy ◽  
Calcium Phosphate ◽  
Calcium Oxide ◽  
Phosphate Glasses

ChemInform Abstract: Raman Spectroscopy of Calcium Phosphate Glasses with Varying CaO Modifier Concentrations.

ChemInform ◽  
2010 ◽  
Vol 22 (15) ◽  
pp. no-no
Author(s):  
J. E. PEMBERTON ◽  
L. LATIFZADEH ◽  
J. P. FLETCHER ◽  
S. H. RISBUD
Keyword(s):  
Raman Spectroscopy ◽  
Calcium Phosphate ◽  
Phosphate Glasses

Preparation and Properties of La2O3-CaO-P2O5 Glasses Doped with Eu3+ Ions

2016 ◽  
Vol 675-676 ◽  
pp. 376-379 ◽  
Author(s):  
Narun Luewarasirikul ◽  
Piyachat Meejitpaisan ◽  
Jakrapong Kaewkhao
Keyword(s):  
Calcium Phosphate ◽  
Molar Volume ◽  
Absorption Spectra ◽  
Room Temperature ◽  
Emission Spectra ◽  
Phosphate Glasses ◽  
Excitation Wavelength ◽  
Melt Quenching ◽  
Volume Measurements ◽  
Doped Glasses

Lanthanum calcium phosphate glasses doped with Eu3+ ions in compositions 20La2O3:10CaO:(70-x)P2O5:xEu2O3 (where x = 0.05, 0.10, 0.50 and 1.50 mol%) were prepared by melt-quenching technique. The density and molar volume measurements were carried out at room temperature. The absorption spectra were investigated in the UV-Vis-NIR region from 200 to 2500 nm. The emission spectra of Eu3+-doped glasses centered at 590 nm (5D0→7F1), 612 nm (5D0→7F2), 652 nm (5D0→7F3) and 699 nm (5D0→7F4) have been observed with 393 nm excitation wavelength.

AC and DC conductivity analysis of hydroxyapatite and titanium calcium phosphate formed by dry ball milling

2006 ◽  
Vol 352 (9-20) ◽  
pp. 1490-1494 ◽  
Author(s):  
C.C. Silva ◽  
M.P.F. Graça ◽  
M.A. Valente ◽  
A.S.B. Sombra
Keyword(s):  
Calcium Phosphate ◽  
Ball Milling ◽  
Dc Conductivity

Physical Properties of Calcium Phosphate Glasses with Various CaO/P2 O3 Mole Ratios

1996 ◽  
Vol 109 (1) ◽  
pp. 47-50
Author(s):  
Chung-King Hsu ◽  
Jinn-Shing Lee ◽  
Jie-Ming Sheu ◽  
Chin-Wang Huang
Keyword(s):  
Calcium Phosphate ◽  
Physical Properties ◽  
Phosphate Glasses

Ionic conductivities of calcium-phosphate glasses

2013 ◽  
Author(s):  
J. Martin ◽  
D. Budina ◽  
J. Zakel ◽  
M. Schafer ◽  
K.-M. Weitzel
Keyword(s):  
Calcium Phosphate ◽  
Ionic Conductivities ◽  
Phosphate Glasses

INFRARED SPECTRA OF CALCIUM PHOSPHATE GLASSES

2010 ◽  
Vol 24 (03) ◽  
pp. 351-358 ◽  
Author(s):  
D. TOLOMAN ◽  
D. A. MAGDAS ◽  
I. BRATU ◽  
L. M. GIURGIU ◽  
I. ARDELEAN
Keyword(s):  
Calcium Phosphate ◽  
Ir Spectroscopy ◽  
Experimental Spectrum ◽  
Phosphate Glasses ◽  
Structural Units ◽  
Bending Vibrations ◽  
Ft Ir ◽  
Infrared Absorption Spectra ◽  
Gaussian Type Function ◽  
Ft Ir Spectroscopy

Infrared absorption spectra of calcium phosphate glasses, x CaO ·(100-x) P 2 O 5 have been investigated by FT-IR spectroscopy. By increasing CaO content, the characteristic bands due to the stretching and bending vibrations were identified and analyzed. The deconvolution of each experimental spectrum was made using a Gaussian-type function. Based on this, the specific structural units of these glasses were identified.

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