Ranjan, Rajeev ; Agrawal, Anupriya ; Senyshyn, Anatoliy ; Boysen, Hans (2006) Crystal structures of high temperature quantum paraelectrics Na1/2Nd1/2TiO3 and Na1/2Pr1/2TiO3 Journal of Physics: Condensed Matter, 18 (41). L515-L522. ISSN 0953-8984
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Official URL: http://doi.org/10.1088/0953-8984/18/41/L02
Related URL: http://dx.doi.org/10.1088/0953-8984/18/41/L02
Abstract
Both neutron and x-ray powder diffraction studies have been carried out for two high temperature quantum paraelectrics, Na1/2Nd1/2TiO3 and Na1/2Pr1/2TiO3. Although visual inspection of the diffraction patterns suggests a 'nearly cubic' like structure, careful analysis of powder neutron diffraction patterns and comparison of Rietveld refinement results for competing models reveal that both compounds belong to the orthorhombically distorted GdFeO3 type of structure (Pbnm space group, a−a−c+ tilt system in Glazer notation). The full set of refined structural parameters is reported for the first time. The relationship between octahedral tilt angles and dielectric softness of these compounds is briefly discussed.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Institute of Physics Publishing. |
| ID Code: | 123050 |
| Deposited On: | 02 Sep 2021 12:51 |
| Last Modified: | 02 Sep 2021 12:51 |
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