CaMn0.5Ir0.5O2.5: An anion-deficient perovskite oxide containing Ir3+
<p>Reaction between CaMn<sub>0.5</sub>Ir<sub>0.5</sub>O<sub>3</sub> and NaH, either through solid-solid contact or via a gas mediated reaction process, yields the topochemically reduced phase CaMn<sub>0.5</sub>Ir<sub>0.5</sub>O<sub...
| Hlavní autoři: | , |
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| Médium: | Journal article |
| Jazyk: | English |
| Vydáno: |
American Chemical Society
2019
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| _version_ | 1826260402121474048 |
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| author | Page, J Hayward, M |
| author_facet | Page, J Hayward, M |
| author_sort | Page, J |
| collection | OXFORD |
| description | <p>Reaction between CaMn<sub>0.5</sub>Ir<sub>0.5</sub>O<sub>3</sub> and NaH, either through solid-solid contact or via a gas mediated reaction process, yields the topochemically reduced phase CaMn<sub>0.5</sub>Ir<sub>0.5</sub>O<sub>2.5</sub> in which Mn<sup>3+</sup> and Ir<sup>3+</sup> cations are located within a partially anion-vacancy disordered lattice. Magnetization data from CaMn<sub>0.5</sub>Ir<sub>0.5</sub>O<sub>2.5</sub> can be fit by the Curie–Weiss law to yield <em>C</em> = 1.586 cm<sup>3</sup> K mol<sup>–1</sup> and θ = −86.9 K, consistent with a combination of <em>S</em> = 2, Mn<sup>3+</sup> and <em>S</em> = 0, Ir<sup>3+</sup>. On cooling below <em>T</em> ∼ 110 K, the system undergoes a transition to a spin-glass state, consistent with the observed Mn/Ir cation disorder and frustration between Mn-O-Mn and Mn-O-Ir-O-Mn magnetic couplings. The degree of reduction and the observed anion-vacancy disorder are discussed on the basis of the d-orbital filling of the transition-metal cations.</p> |
| first_indexed | 2024-03-06T19:05:04Z |
| format | Journal article |
| id | oxford-uuid:14d7281b-63a9-4afc-ad5f-a42b0244c380 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T19:05:04Z |
| publishDate | 2019 |
| publisher | American Chemical Society |
| record_format | dspace |
| spelling | oxford-uuid:14d7281b-63a9-4afc-ad5f-a42b0244c3802022-03-26T10:22:09ZCaMn0.5Ir0.5O2.5: An anion-deficient perovskite oxide containing Ir3+Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:14d7281b-63a9-4afc-ad5f-a42b0244c380EnglishSymplectic Elements at OxfordAmerican Chemical Society2019Page, JHayward, M<p>Reaction between CaMn<sub>0.5</sub>Ir<sub>0.5</sub>O<sub>3</sub> and NaH, either through solid-solid contact or via a gas mediated reaction process, yields the topochemically reduced phase CaMn<sub>0.5</sub>Ir<sub>0.5</sub>O<sub>2.5</sub> in which Mn<sup>3+</sup> and Ir<sup>3+</sup> cations are located within a partially anion-vacancy disordered lattice. Magnetization data from CaMn<sub>0.5</sub>Ir<sub>0.5</sub>O<sub>2.5</sub> can be fit by the Curie–Weiss law to yield <em>C</em> = 1.586 cm<sup>3</sup> K mol<sup>–1</sup> and θ = −86.9 K, consistent with a combination of <em>S</em> = 2, Mn<sup>3+</sup> and <em>S</em> = 0, Ir<sup>3+</sup>. On cooling below <em>T</em> ∼ 110 K, the system undergoes a transition to a spin-glass state, consistent with the observed Mn/Ir cation disorder and frustration between Mn-O-Mn and Mn-O-Ir-O-Mn magnetic couplings. The degree of reduction and the observed anion-vacancy disorder are discussed on the basis of the d-orbital filling of the transition-metal cations.</p> |
| spellingShingle | Page, J Hayward, M CaMn0.5Ir0.5O2.5: An anion-deficient perovskite oxide containing Ir3+ |
| title | CaMn0.5Ir0.5O2.5: An anion-deficient perovskite oxide containing Ir3+ |
| title_full | CaMn0.5Ir0.5O2.5: An anion-deficient perovskite oxide containing Ir3+ |
| title_fullStr | CaMn0.5Ir0.5O2.5: An anion-deficient perovskite oxide containing Ir3+ |
| title_full_unstemmed | CaMn0.5Ir0.5O2.5: An anion-deficient perovskite oxide containing Ir3+ |
| title_short | CaMn0.5Ir0.5O2.5: An anion-deficient perovskite oxide containing Ir3+ |
| title_sort | camn0 5ir0 5o2 5 an anion deficient perovskite oxide containing ir3 |
| work_keys_str_mv | AT pagej camn05ir05o25ananiondeficientperovskiteoxidecontainingir3 AT haywardm camn05ir05o25ananiondeficientperovskiteoxidecontainingir3 |