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    • Keywords


      NZP; phosphates; luminescence; europium; crystal structure; morphotropic transition.

    • Abstract


      The solid solution row A$_{1−3x}Eu$^{3+}_x$Zr$_2$(PO$_4$)$_3$, where $A= Na$, K, Rb, Cs and x ranging from 0 to 0.25 was obtained by methods based on sol–gel processes in the presence of the salting-out agent, C$_2$H$_5$OH. The formation of phases of the structural type NaZr$_2$(PO$_4$)$_3$ (NZP) and their crystallization in the crystal forms belonging to the space group $R\bar{3}c$ ($0 \le x \le 0.1$) and $P\bar{3}c$ ($x = 0.25$) were determined. Morphotropic transition occurred. Trivalent europium was included as a local probe. Its electric and magnetic dipole was used to characterize the substitutionrule and the localization of this cation in the structure, which is in agreement with the structural characterization. It appears that europium is located in the M1 and M2 sites as a function of the Eu$^{3+}$ concentration.

    • Author Affiliations



      1. Lobachevsky State University of Nizhni Novgorod, Nizhni Novgorod 603950, Russia
      2. CNRS, University Bordeaux, ICMCB, UPR 9048, F-33600 Pessac, France
      3. Lomonosov Moscow State University, Leninskie Gory, Moscow 119991, Russia
    • Dates

  • Bulletin of Materials Science | News

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