Tellurite And Fluorotellurite Glasses For Active And Passive

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5. Crystallisation studies; MDO 139 state semiconductor detector. The counter / detector registers the diffracted beam intensity in successive stages away from the direct beam [1]. The sample is mounted at the centre of a goniometer, and a motor rotates the goniometer and substrate by an angle of θ, and the X-ray detector is coupled to move 2θ [1]. The signal is recorded by data logging software attached to the instrument. Each hkl (Miller indices) reflection recorded appears as a peak on the trace, with a height depending on the intensity of the diffracted beam. The range of 2θ values, scan speed and step size can be varied to achieve the desired resolution [1]. 2θ angles corresponding to the peaks on the traces can be converted d-spacings using the Bragg equation (equation (5.5)) [3]. 5.2. Results 5.2.1. XRD 5.2.1.1. XRD of batch materials XRD was performed on batch materials to assess phase purity. Fig. (5.3) shows an XRD trace of the 99.9995% TeO2 obtained from Alfa Aesar. It can be seen from this trace, that the TeO2 powder used in this study was phase pure, resulting in a match to JCPDS card number 78-1714: TeO2, tetragonal, space group P43212. Table (5.1) shows the ten most intense peaks with corresponding 2θ (observed and theoretical) and Miller indices.
5. Crystallisation studies; MDO 140 Lin (Counts) 3500 3400 3300 3200 3100 3000 2900 2800 2700 2600 2500 2400 2300 2200 2100 2000 1900 1800 1700 1600 1500 1400 1300 1200 1100 1000 900 800 700 600 500 400 300 200 100 0 d=5.89987 d=4.05935 d=3.39768 d=3.10308 d=2.98152 d=2.53307 d=2.40347 d=2.29179 10 20 30 40 50 60 70 2-Theta - Scale TeO2 Powder - File: TeO2_Powder.RAW - Type: 2Th/Th locked - Start: 10.000 ° - End: 100.000 ° - Step: 0.020 ° - Step time: 2. s - Temp.: 25 °C (Room) - Time Started: 0 s - 2-Theta: 10.000 ° - Theta: 5.000 ° - Aux1: 0.0 - Operations: Import 78-1714 (C) - Tellurium Oxide - TeO2 - Y: 50.00 % - d x by: 1. - WL: 1.5406 - Tetragonal - a 4.81000 - b 4.81000 - c 7.61300 - alpha 90.000 - beta 90.000 - gamma 90.000 - Primitive - P43212 (96) - 4 - 176.135 - I/Ic PDF Fig. (5.3): XRD trace of 99.9995% TeO2 powder, sourced from Alfa Aesar (⎯ JCPDS card number 78-1714: TeO2, tetragonal, P43212). Table (5.1): Ten most intense peaks with corresponding 2θ (observed and theoretical) and Miller indices for 99.9995% TeO2 powder, sourced from Alfa Aesar. Observed 2θθθθ / ° Observed intensity / % Theoretical 2θθθθ / ° Theoretical intensity / % hkl JCPDS Card 21.89281 7.3 21.85456 8 101 78-1714 26.22334 69.5 26.19589 79 110 " 28.76178 11.6 28.74014 11 111 " 29.95996 100.0 29.92528 100 102 " 37.38807 12.6 37.36348 19 200 " 47.76061 7.8 47.69421 7 004 " 48.55619 42.8 48.51403 49 212 " 53.76324 8.5 53.74333 8 220 " 55.17628 17.8 55.11794 17 114 / 221 " 61.90285 9.7 61.85775 11 204 / 311 " d=2.15025 d=2.06854 d=2.03144 d=1.90074 d=1.87121 d=1.70000 d=1.65925 d=1.63973 d=1.56781 d=1.52016 d=1.49145 d=1.47670 d=1.41207 d=1.38840 d=1.35382
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TELLURITE AND FLUOROTELLURITE GLASS
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Abstract Glasses systems based on T
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Contents; MDO i Contents Contents i
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Contents; MDO iii 6.1.2.1. Method a
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Glossary; MDO Glossary aM = partial
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Glossary; MDO λ = wavelength λn =
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Glossary; MDO Ψ = complex dielectr
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1. Introduction; MDO 2 communicatio
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1. Introduction; MDO 4 Infrared tra
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1. Introduction; MDO 6 1.4. Thesis
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1. Introduction; MDO 8 [14] J. E. S
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2. Literature review; MDO 10 one of
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2. Literature review; MDO 12 superc
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2. Literature review; MDO 14 2.2.2.
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2. Literature review; MDO 16 phenom
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2. Literature review; MDO 18 tenden
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2. Literature review; MDO 20 crysta
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2. Literature review; MDO 22 the Za
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2. Literature review; MDO 26 Champa
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2. Literature review; MDO 28 the ad
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2. Literature review; MDO 30 (a) (b
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2. Literature review; MDO 32 showed
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2. Literature review; MDO 34 absorp
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2. Literature review; MDO 36 sharp
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2. Literature review; MDO 38 near f
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2. Literature review; MDO 40 where
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2. Literature review; MDO 42 Transm
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2. Literature review; MDO 44 origin
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2. Literature review; MDO 46 4 α =
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2. Literature review; MDO 48 Bragli
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2. Literature review; MDO 50 It can
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2. Literature review; MDO 52 and su
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2. Literature review; MDO 54 be bro
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2. Literature review; MDO 58 Table
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2. Literature review; MDO 62 [20] J
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2. Literature review; MDO 64 [47] S
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3. Glass batching and melting; MDO
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4. Thermal properties and glass sta
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6. Optical properties; MDO 190 Abso
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Percentage (%) 80 70 60 50 40 30 20
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6. Optical properties; MDO 198 Fig.
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6. Optical properties; MDO 202 6.2.
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6. Optical properties; MDO 204 Loss
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6. Optical properties; MDO 208 Tabl
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6. Optical properties; MDO 214 Loss
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Refractive index, n , at 632.8 nm 6
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6. Optical properties; MDO 228 tell
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6. Optical properties; MDO 230 mole
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6. Optical properties; MDO 232 occu
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6. Optical properties; MDO 234 The
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6. Optical properties; MDO 236 addi
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6. Optical properties; MDO 238 an o
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6. Optical properties; MDO 240 30 m
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6. Optical properties; MDO 242 Fig.
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6. Optical properties; MDO 244 zinc
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6. Optical properties; MDO 246 [4]
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6. Optical properties; MDO 248 [32]
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7. Surface properties; MDO 250 7.1.
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7. Surface properties; MDO 252 For
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7. Surface properties; MDO 254 can
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7. Surface properties; MDO 256 wher
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7. Surface properties; MDO 258 etch
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7. Surface properties; MDO 260 Elem
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7. Surface properties; MDO 262 All
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7. Surface properties; MDO 264 beco
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7. Surface properties; MDO 266 prov
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7. Surface properties; MDO 268 cont
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7. Surface properties; MDO 270 LaB6
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7. Surface properties; MDO 272 7.2.
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7. Surface properties; MDO 274 Tabl
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7. Surface properties; MDO 276 This
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7. Surface properties; MDO 278 It c
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7. Surface properties; MDO 280 Fig.
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7. Surface properties; MDO 282 CPS
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7. Surface properties; MDO 288 samp
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7. Surface properties; MDO 290 20
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7. Surface properties; MDO 292 20
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7. Surface properties; MDO 294 Wt.
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7. Surface properties; MDO 296 It c
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7. Surface properties; MDO 300 The
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7. Surface properties; MDO 302 Wt.
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7. Surface properties; MDO 304 All
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7. Surface properties; MDO 306 The
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[Zn(OH,F)F] / mol. % 7. Surface pro
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7. Surface properties; MDO 310 bind
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7. Surface properties; MDO 312 ZnF2
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7. Surface properties; MDO 314 clea
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7. Surface properties; MDO 316 have
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7. Surface properties; MDO 320 quan
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7. Surface properties; MDO 322 ∫
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7. Surface properties; MDO 324 This
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7. Surface properties; MDO 326 Ther
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7. Surface properties; MDO 328 [2]
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8. Fibre drawing; MDO 330 8. Fibre
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8. Fibre drawing; MDO 332 The data
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8. Fibre drawing; MDO 334 Table (8.
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Preform 8. Fibre drawing; MDO 336 S
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8. Fibre drawing; MDO 338 (a) (b) F
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8. Fibre drawing; MDO 340 Log10(η)
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8. Fibre drawing; MDO 342 sectioned
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8. Fibre drawing; MDO 344 Fig. (8.9
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8. Fibre drawing; MDO 350 Crystals
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8. Fibre drawing; MDO 352 8.2.4. Op
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8. Fibre drawing; MDO 354 Table (8.
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8. Fibre drawing; MDO 356 confirmed
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8. Fibre drawing; MDO 358 Log10(η)
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8. Fibre drawing; MDO 360 It can be
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8. Fibre drawing; MDO 362 undercool
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8. Fibre drawing; MDO 364 1. 2. 3.
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8. Fibre drawing; MDO 366 cross-sha
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8. Fibre drawing; MDO 368 A small n
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8. Fibre drawing; MDO 370 particles
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8. Fibre drawing; MDO 372 8.5. Refe
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8. Fibre drawing; MDO 374 [25] D. M
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9. Conclusions; MDO 376 optical bas
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9. Conclusions; MDO 378 • The as-
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9. Conclusions; MDO 380 9.3. Optica
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9. Conclusions; MDO 382 • For fib
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9. Conclusions; MDO 384 edge across
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9. Conclusions; MDO 386 • For gla
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9. Conclusions; MDO 388 • The Ag
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9. Conclusions; MDO 390 • Increas
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9. Conclusions; MDO 392 [5] I. Shal
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10. Future work; MDO 394 Fig. (10.1
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Temperature / o C 10. Future work;
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Tellurite And Fluorotellurite Glasses For Active And Passive

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