Results 211 to 220 of about 110,894 (263)

Dielectric Relaxation in Silver Phosphate and Silver Borophosphate Glasses

Physica Status Solidi (a), 1993
Dielectric measurements, tan δ and G(ω), in 0.40Ag2O—0.60P2O5, 0.60Ag2O—0.40P2O5, and 0.60Ag2O—0.08B2O3—0.32P2O5 glasses are reported in the frequency range 10−3 to 105 Hz and the temperature range 175 to 400 K. Anomalous behaviour of tan δ is observed in the 0.60Ag2O—0.08 B2O3—0.32P2O5 glass and is interpreted in connection with the existence of BPO4 ...
N. U. Haque, R. A. Hashmi, M. K. Anis
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Diffusive barrier in silver phosphate and silver borophosphate glasses

Physica Status Solidi (a), 1994
Dielectric measurements are carried out on [60 Ag2O–x B2O3–(40 – x) P2O5] glasses in the frequency and temperature range 10−3 to 105 Hz and 120 to 400 K, respectively. The observed dielectric data show an interfacial barrier at the metal–glass contact and reveal a barrier relaxation time τ ≈ 0.1 s, barrier capacitance Cs ≈ 4 × 10−6 F, barrier width ds ≈
N. U. Haque, R. A. Hashmi, M. K. Anis
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Silver scandium double phosphate

Journal of the Less Common Metals, 1984
Ag 3 Sc(PO 4 ) 2 est un phosphate double orthorombique. La presence de scandium implique qu'on ne peut pas faire d'analogie entre ce compose et les autres phosphates doubles des metaux monovalents ou ...
P.P. Melnikov, J.D.Carrillo Heredero, L.N. Komissarova   +2 more
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Photocleavage of water with silver phosphate

Journal of the Chemical Society, Chemical Communications, 1988
Silver phosphate is found to photocatalyse decomposition of water into oxygen and hydrogen without the presence of either electron or hole transfer catalysts.
K. Tennakone, A. H. Jayatissa, W. Wijeratne   +2 more
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A phosphate sensor based on silver phosphate-modified electrodes

Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, 1990
A phosphate sensitive ion-selective electrode based on silver phosphate has been prepared by electrochemical deposition of silver on platinum and subsequent anodic dissolution of the deposited Ag in alkali phosphate solutions. The potential of these Ag3PO4−modified electrodes is controlled by PO3−4 ions in the activity range of 3 × 10−9 < aPO3−4 < 3 ...
I. Vermes, E.W. Grabner
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Energy dependence of silver phosphate glass dosimeters

The International Journal of Applied Radiation and Isotopes, 1958
Abstract The responses of three types of silver phosphate glass dosimeter to X- and γ-radiation show a small energy dependence effect over the energy region, 1·26 to 24 MeV. Dosimeters in the form of thin glass plates exhibit a greater response to low energy X-rays. Increasing the size of the glass element reduces this energy dependence.
A L, RIEGERT, J W, SPINKS
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Silver to erbium energy transfer in phosphate glasses

Journal of Non-Crystalline Solids, 2007
Silver and erbium co-doped sodium metaphosphate glasses were prepared by standard melt-quench technique. The samples underwent heat or 355 nm laser radiation exposure treatments in order to promote silver clustering. Absorption and photoluminescence spectra allowed distinguishing several active species related to silver, whose concentration in the ...
M Mattarelli, M Montagna, E Moser, KC Vishnubhatla, C Armellini, A Chiasera, M Ferrari, G Speranza, M Brenci, G Nunzi Conti, GC Righini   +10 more
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Ionic conduction in silver phosphate glasses doped with silver sulphide

Philosophical Magazine B, 1996
Abstract The dielectric properties of (Ag2S) x ( AgPO3)1‐x and AgPO3 ionic glasses have been investigated at low frequencies (10 Hz‐10 MHz) by complex impedance measurements in the temperature range between 20 and 330 K and at microwave frequencies (8.2–18 GHz) using a waveguide transmission line and also a cavity resonator at 9 GHz from 77 to 300 K ...
CUTRONI, Maria, MANDANICI, Andrea, PICCOLO, Antonio, FANGGAO C, SAUNDERS GA, MUSTARELLI P.   +5 more
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The structure and properties of silver-doped phosphate-based glasses [PDF]

Journal of Materials Science, 2007
An undoped and two silver-doped (0, 3 and 5 mol% Ag) phosphate glass compositions were investigated for their structure and properties. These compositions had in a previous study been investigated for their antimicrobial properties, and were found to be extremely potent at inhibiting the micro-organisms tested. Thermal, X-ray diffraction (XRD), nuclear
Ahmed, I, Abou Neel, EA, Valappil, S, Nazhat, SN, Pickup, DM, Carta, Daniela, Carroll, DL, Newport, RJ, Smith, ME, Knowles, JC   +9 more
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Standard electrode potentials of the silver – silver phosphate and silver – silver arsenate electrodes in formamide at different temperatures

Canadian Journal of Chemistry, 1981
For the emf measurements of cells of the type Ag, AgCl/NaCl(m)|Na3X(m/3)/Ag3X, Ag where X is PO4 or AsO4, the standard potentials of the silver–silver phosphate and silver–silver arsenate electrodes have been determined in formamide at five different temperatures ranging from 5 to 45 °C.
Upendra Nath Dash, Surendra Kumar Nayak
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