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Apatite-type SrPr(4)(SiO(4))(3)O.

Terutoshi Sakakura¹, Minami Kamoshita, Hironaga Iguchi

¹Ceramics Research Laboratory, Nagoya Institute of Technology, Asahigaoka, Tajimi 507-0071, Japan.

Acta Crystallographica. Section E, Structure Reports Online

|May 19, 2011

Summary

Single crystals of strontium tetra-praseodymium tris-(silicate) oxide were grown using a self-flux method. This strontium-rare earth silicate exhibits an apatite-like structure, offering insights into complex oxide materials.

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Area of Science:

Materials Science
Solid State Chemistry
Crystallography

Background:

The apatite supergroup comprises compounds with diverse applications.
Understanding the structural variations within this group is crucial for designing new materials.

Purpose of the Study:

To synthesize single crystals of strontium tetra-praseodymium tris-(silicate) oxide (SrPr4(SiO4)3O).
To elucidate the crystal structure and atomic arrangement of this novel compound.

Main Methods:

Single crystal growth via the self-flux method utilizing SrCl2.
Structural analysis based on crystallographic principles.

Main Results:

The compound SrPr4(SiO4)3O crystallizes in a structure isotypic with the apatite supergroup.
Detailed analysis of M1 (Pr/Sr) and M2 (Pr) sites, revealing coordination environments.
Identification of isolated SiO4 tetrahedra and a unique oxygen atom arrangement.

Conclusions:

The successful synthesis and structural determination of SrPr4(SiO4)3O provide a new member of the apatite family.
The specific atomic ordering and coordination polyhedra offer insights into structure-property relationships in rare-earth silicates.