Study of two tungstates Ca0.5Cd0.5WO4 and Ca0.2Cd0.8WO4 by transmission electron microscopy
To better understand the role of crystal structures and local disorder in the photonic properties of the system (1 − x )CaWO 4 − x CdWO 4 with 0 < x < 1, two specific phases with compositions x = 0.5 (scheelite phase) and 0.8 (wolframite phase) have been studied by scanning and transmission electron microscopies. High‐resolution electron microscopy images and image simulations, associated with X‐ray diffraction data, allowed confirming the lattices and space groups I4 1 /a and P2/c of the two scheelite and wolframite phases, at the local scale. The electron microscopy data show the existence of a high degree of crystallization associated with statistical distribution of Ca or Cd atoms on a Ca 1− x Cd x site in each lattice..
| Medienart: |
Artikel |
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| Erscheinungsjahr: |
2016 |
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| Erschienen: |
2016 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:261 |
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| Enthalten in: |
Journal of microscopy - 261(2016), 1, Seite 14-26 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
TAOUFYQ, A [VerfasserIn] |
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| Links: |
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| Themen: |
Calcium cadmium tungstates |
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| doi: |
10.1111/jmi.12311 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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OLC1970583398 |
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| 264 | 1 | |c 2016 | |
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| 520 | |a To better understand the role of crystal structures and local disorder in the photonic properties of the system (1 − x )CaWO 4 − x CdWO 4 with 0 < x < 1, two specific phases with compositions x = 0.5 (scheelite phase) and 0.8 (wolframite phase) have been studied by scanning and transmission electron microscopies. High‐resolution electron microscopy images and image simulations, associated with X‐ray diffraction data, allowed confirming the lattices and space groups I4 1 /a and P2/c of the two scheelite and wolframite phases, at the local scale. The electron microscopy data show the existence of a high degree of crystallization associated with statistical distribution of Ca or Cd atoms on a Ca 1− x Cd x site in each lattice. | ||
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| 650 | 4 | |a Calcium cadmium tungstates | |
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| 650 | 4 | |a high‐resolution electron microscopy | |
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| 700 | 1 | |a GUINNETON, F |4 oth | |
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