Structural chemistry and magnetic properties of the perovskite SrLa2Ni2TeO9
A polycrystalline sample of SrLa2Ni2TeO9 has been synthesized using a standard ceramic method and characterized by neutron diffraction, magnetometry and electron microscopy. The compound adopts a monoclinic, perovskite-like structure with space group P21/n and unit cell parameters a=5.6008(1), b=5.5...
| Main Authors: | , , , , |
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| Format: | Journal article |
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Elsevier
2016
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| _version_ | 1797099810934751232 |
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| author | Paria Sena, R Hadermann, J Chin, C Hunter, E Battle, P |
| author_facet | Paria Sena, R Hadermann, J Chin, C Hunter, E Battle, P |
| author_sort | Paria Sena, R |
| collection | OXFORD |
| description | A polycrystalline sample of SrLa2Ni2TeO9 has been synthesized using a standard ceramic method and characterized by neutron diffraction, magnetometry and electron microscopy. The compound adopts a monoclinic, perovskite-like structure with space group P21/n and unit cell parameters a=5.6008(1), b=5.5872(1), c=7.9018(2) Å, β=90.021(6)° at room temperature. The two crystallographically-distinct B sites are occupied by Ni2+ and Te6+ in ratios of 83:17 and 50:50. Both ac and dc magnetometry suggest that the compound is a spin glass below 35 K but the neutron diffraction data show that some regions of the sample are antiferromagnetic. Electron microscopy revealed twinning on a nanoscale and local variations in composition. These defects are thought to be responsible for the presence of two distinct types of antiferromagnetic ordering. |
| first_indexed | 2024-03-07T05:28:54Z |
| format | Journal article |
| id | oxford-uuid:e18534a6-19ca-4d04-be70-5688a992c253 |
| institution | University of Oxford |
| last_indexed | 2024-03-07T05:28:54Z |
| publishDate | 2016 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | oxford-uuid:e18534a6-19ca-4d04-be70-5688a992c2532022-03-27T09:55:04ZStructural chemistry and magnetic properties of the perovskite SrLa2Ni2TeO9Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:e18534a6-19ca-4d04-be70-5688a992c253Symplectic Elements at OxfordElsevier2016Paria Sena, RHadermann, JChin, CHunter, EBattle, PA polycrystalline sample of SrLa2Ni2TeO9 has been synthesized using a standard ceramic method and characterized by neutron diffraction, magnetometry and electron microscopy. The compound adopts a monoclinic, perovskite-like structure with space group P21/n and unit cell parameters a=5.6008(1), b=5.5872(1), c=7.9018(2) Å, β=90.021(6)° at room temperature. The two crystallographically-distinct B sites are occupied by Ni2+ and Te6+ in ratios of 83:17 and 50:50. Both ac and dc magnetometry suggest that the compound is a spin glass below 35 K but the neutron diffraction data show that some regions of the sample are antiferromagnetic. Electron microscopy revealed twinning on a nanoscale and local variations in composition. These defects are thought to be responsible for the presence of two distinct types of antiferromagnetic ordering. |
| spellingShingle | Paria Sena, R Hadermann, J Chin, C Hunter, E Battle, P Structural chemistry and magnetic properties of the perovskite SrLa2Ni2TeO9 |
| title | Structural chemistry and magnetic properties of the perovskite SrLa2Ni2TeO9 |
| title_full | Structural chemistry and magnetic properties of the perovskite SrLa2Ni2TeO9 |
| title_fullStr | Structural chemistry and magnetic properties of the perovskite SrLa2Ni2TeO9 |
| title_full_unstemmed | Structural chemistry and magnetic properties of the perovskite SrLa2Ni2TeO9 |
| title_short | Structural chemistry and magnetic properties of the perovskite SrLa2Ni2TeO9 |
| title_sort | structural chemistry and magnetic properties of the perovskite srla2ni2teo9 |
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