Synthesis and structural study of the new perovskite series CaLn2ZnTi2O9 (=(Ca1/3Ln2/3)A(Zn1/3Ti2/3)BO3) (Ln=La, Pr, Nd, Eu)
The new perovskites CaLn2ZnTi2O9 (Ln=La, Pr, Nd, Eu) have been synthesized in polycrystalline form by a conventional solid-state reactions process at 1300 deg C in air atmosphere. The structure refinement of the four samples, by Rietveld analysis using X-ray powder diffraction (XRD), shows that the...
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| Published in: | Materials letters Vol. 58; no. 19; pp. 2406 - 2411 |
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| Main Authors: | , |
| Format: | Journal Article |
| Language: | English |
| Published: |
01-07-2004
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| Online Access: | Get full text |
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| Summary: | The new perovskites CaLn2ZnTi2O9 (Ln=La, Pr, Nd, Eu) have been synthesized in polycrystalline form by a conventional solid-state reactions process at 1300 deg C in air atmosphere. The structure refinement of the four samples, by Rietveld analysis using X-ray powder diffraction (XRD), shows that the cationic distribution over the A-and B-sites of the perovskite structure can be illustrated by the crystallographic formula (Ca1/3Ln2/3)A(Zn1/3Ti2/3)BO3. All phases were described as orthorhombic perovskites with a GdFeO3-type structure, Pbnm space group, in which A (Ca(Ln)) and B (Zn(Ti)) cations are disordered at random. Magnetic susceptibility measurements of the selected (Ca1/3Pr2/3)A(Zn1/3Ti2/3)BO3 phase are consistent with the presence of Pr3+ ions in this compound. |
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| Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
| ISSN: | 0167-577X |
| DOI: | 10.1016/j.matlet.2004.02.023 |