Crystallochemistry of New Isotypes of Sr3 (PO4)2
Bouchra Gourja1, Malika Tridane2, Abdelhamid Daoudi3, Said Belaaouad4
1Bouchra Gourja, Centre Régional des Métiers de l’Education et de la Formation de Casablanca, Maroc/ Laboratoire de Chimie Physique des Matériaux. Faculté des sciences Ben Msik, Université Hassan II de Casablanca, Maroc.
2Malika Tridane, Centre Régional des Métiers de l’Education et de la Formation de Casablanca, Maroc/ Laboratoire de Chimie Physique des Matériaux. Faculté des sciences Ben Msik, Université Hassan II de Casablanca, Maroc.
3Abdelhamid Daoudi, Laboratoire de Chimie minérale de la faculté des sciences Ain Chock de l’ Université Hassan II de Casablanca, Maroc,
4Said Belaaouad, Laboratoire de Chimie Physique des Matériaux de la Faculté des sciences Ben Msik, Université Hassan II de Casablanca, Maroc.
Manuscript received on 23 November 2016 | Revised Manuscript received on November 2016 | Manuscript published on 30 November 2016 | PP: 17-22 | Volume-5 Issue-5, November 2016 | Retrieval Number: E1635115516©BEIESP
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Abstract: Several authors have considered the possibilities of substitution within structures B3 (XO4 )2 of type Sr3 (PO4 )2 . Since substitutions within the phosphate of lead have never been made to our knowledge, we have proposed to do so. This allowed us to synthesize the new solid solutions Pb3–2xKxNdx (PO4 )2 , the average ionic radius of K + and Nd3+ being close to that of Pb2 + . The new phases Pb3-2xKxNdx (PO4 )2 for x = 0.05; 0.10 and 0.15 are isotypes of β Pb3 (PO4 )2 , those for x = 0.20; 0.25; 0.50 and 0.75 are isotypes of Sr3 (PO4 )2 . Substitution of Pb2 + with K + and Nd3 + results in a slight decrease in volume; Which is consistent with the mean value of the ionic radii of potassium and neodymium which is slightly less than the ionic radius of the lead.
Keyword: Substitution within structures B3 (XO4 )2 of type Sr3 (PO4 )2, synthesize the new solid solutions,Pb3–2xKxNdx (PO4 )2.
Scope of the Article: Sequential, Parallel and Distributed Algorithms and Data Structures