Tellurite And Fluorotellurite Glasses For Active And Passive

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8. Fibre drawing; MDO 363 altered by external factors such as impurities, pressure, temperature and rate of cooling [27]. It is interesting to note, that these snowflake shaped crystals (see fig. (8.8)) initially grow to form a cross shapes, possibly due to a similar mechanism shown in fig. (8.18). Then from the primary cross-shaped dendrites, secondary dentrites grow diagonally (in the {110} direction). This is likely to be due to a similar mechanism described above for a cubic crystal. In orthorhombic NaZnF3, first the cubic {001} plane grows forming a cross shaped dendritic structure. Eventually, the {001} plane is enveloped by the slower moving {110} plane and secondary dendrites grow from the primary structure. The triangular shaped crystals seen in fig. (8.7) are likely to be due to an orientation effect from the polishing process. Fig. (8.19) shows a possible model for crystallisation of the snowflake shaped orthorhombic NaZnF3 crystals in glass MOF005 (70TeO2-10Na2O- 20ZnF2 mol. %) and similar compositions.
8. Fibre drawing; MDO 364 1. 2. 3. 4. 5. 6. 1. Initial nucleation 2. Cubic {001}primary dendrite growth 3. Further {001} growth Fig. (8.19): Possible model for crystallisation of the snowflake shaped orthorhombic NaZnF3 crystals in glass MOF005 (70TeO2-10Na2O-20ZnF2 mol. %). Öveçoğlu et al. [28] studied the crystallisation of glasses in the system (1-x)TeO2-xLiCl (x = 0.4-0.6 mol. %). Fig. (8.20) illustrates one of these crystals, which are similar in shape to the snowflake shaped crystals seen in this study. 4. {110}secondary dendrite growth 5. Slower {001} growth 6. Further {110} growth
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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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5. Crystallisation studies; MDO 134
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6. Optical properties; MDO 166 75-5
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6. Optical properties; MDO 168 Fig.
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6. Optical properties; MDO 170 In r
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6. Optical properties; MDO 172 wher
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6. Optical properties; MDO 176 Abso
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6. Optical properties; MDO 178 ener
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6. Optical properties; MDO 180 6.1.
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6. Optical properties; MDO 182 ( n
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6. Optical properties; MDO 186 %),
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6. Optical properties; MDO 188 Tabl
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Percentage (%) 80 70 60 50 40 30 20
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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 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 286 Tabl
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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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Page 369 and 370: 8. Fibre drawing; MDO 356 confirmed
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Page 409 and 410: Temperature / o C 10. Future work;
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Tellurite And Fluorotellurite Glasses For Active And Passive

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