Study of phase transitions in the system A1B11PO4 with A1 = Li,Rb and B11 = Mg,Ca, Sr,Ba, Zn,Cd, Pb |
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| Authors: | L Elammari B Elouadi G Müller-Vogt |
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| Institution: | 1. Applied Solid State Chemistry Laboratory , Faculty of Science Charia Ibn Batota , Rabat , Morocco;2. Institut für Kristallographie , Universit?t Karlsruhe , FRG;3. Applied Solid State Chemistry Laboratory , Faculty of Science Charia Ibn Batota , Rabat , Morocco;4. Kristall- und Materiallabor der Fakult?t für Physik , Universit?t Karlsruhe , FRG |
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| Abstract: | The series of the title compounds were prepared by solid-state reactions. The phase transitions between room temperature and 1450 °C were investigated by DTA and X-ray diffraction. All compounds undergo at least one reversible phase transition in the solid state. The Rb containing compounds, with the exception of those with Cd and Zn, show no liquid phase up to 1450 °C. The phases formed crystallize with various structures which can be described partly as distorted olivine, LiKSO4, CsZnPO4 or glaserite. RbCdPO4 shows an incommensurate structure with a one-dimensional modulation. |
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| Keywords: | DTA and X-ray diffraction distorted olivine glaserite |
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