Europium precipitates in monocrystalline NaCl - Part 1 General features of as-grown state

M. Suszyńska, H. Opyrchał, M. Czapelski, M. Manfredi

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As-grown and well aged at room temperature NaCl crystals doped with divalent europium were systematically studied by using optical, dielectrical and mechanical methods. It has been found that at room temperature the optical absorption spectrum of -these crystals is strongly concentration-dependent. The role of the dopant concentration has been also evidenced by photoluminescence (taken at liquid nitrogen temperature) thermally stimulated depolarization current techniques and the mechanical response of the as-grown crystals. The experimental results obtained have been explained by assuming that the increase of the dopant concentration is accompanied by structural changes of the Eu2+-related precipitates from impurity-vacancy dipoles and small aggregates to orthorhombic EuCl2 Of PbC2-type.

Original languageEnglish (US)
Pages (from-to)715-721
Number of pages7
JournalJournal of Materials Science
Issue number2
StatePublished - Feb 1987
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Materials Science
  • Mechanics of Materials
  • Mechanical Engineering


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