CaLa2FeCoSbO9 and ALa2FeNiSbO9 (A = Ca, Sr, Ba): cation-ordered, inhomogeneous, ferrimagnetic perovskites
Polycrystalline samples of CaLa2FeCoSbO9 and ALa2FeNiSbO9 (A = Ca, Sr, Ba) have been prepared in solid-state reactions and studied by a combination of transmission electron microscopy, magnetometry, X-ray diffraction, neutron diffraction and Mössbauer spectroscopy. Diffraction and TEM showed that...
| Κύριοι συγγραφείς: | , , , , , |
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| Μορφή: | Journal article |
| Γλώσσα: | English |
| Έκδοση: |
Elsevier
2020
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| _version_ | 1826286242958934016 |
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| author | Hendrickx, M Tang, Y Hunter, EC Battle, PD Cadogan, JM Hadermann, J |
| author_facet | Hendrickx, M Tang, Y Hunter, EC Battle, PD Cadogan, JM Hadermann, J |
| author_sort | Hendrickx, M |
| collection | OXFORD |
| description | Polycrystalline samples of CaLa2FeCoSbO9 and ALa2FeNiSbO9 (A = Ca, Sr, Ba) have been prepared in solid-state reactions and studied by a combination of transmission electron microscopy, magnetometry, X-ray diffraction, neutron diffraction and Mössbauer spectroscopy. Diffraction and TEM showed that each shows 1:1 B-site ordering in which Co2+/Ni2+ and Sb5+ tend to occupy two distinct crystallographic sites while Fe3+ is distributed over both sites. While X-ray and neutron diffraction agreed that all four compositions are monophasic with space group P21/n, TEM revealed different levels of compositional inhomogeneity at the subcrystal scale, which, in the case of BaLa2FeNiSbO9, leads to the occurrence of both a P21/n and an I2/m phase. Magnetometry and neutron diffraction show that these perovskites are ferrimagnets with a G-type magnetic structure. Their relatively low magnetisation can be attributed to their inhomogeneity. This work demonstrates the importance of studying the microstructure of complex compositions. |
| first_indexed | 2024-03-07T01:40:52Z |
| format | Journal article |
| id | oxford-uuid:96cd081c-4b1e-4a26-80dc-4b22fdc0a85b |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T01:40:52Z |
| publishDate | 2020 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | oxford-uuid:96cd081c-4b1e-4a26-80dc-4b22fdc0a85b2022-03-26T23:55:27ZCaLa2FeCoSbO9 and ALa2FeNiSbO9 (A = Ca, Sr, Ba): cation-ordered, inhomogeneous, ferrimagnetic perovskitesJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:96cd081c-4b1e-4a26-80dc-4b22fdc0a85bEnglishSymplectic ElementsElsevier2020Hendrickx, MTang, YHunter, ECBattle, PDCadogan, JMHadermann, JPolycrystalline samples of CaLa2FeCoSbO9 and ALa2FeNiSbO9 (A = Ca, Sr, Ba) have been prepared in solid-state reactions and studied by a combination of transmission electron microscopy, magnetometry, X-ray diffraction, neutron diffraction and Mössbauer spectroscopy. Diffraction and TEM showed that each shows 1:1 B-site ordering in which Co2+/Ni2+ and Sb5+ tend to occupy two distinct crystallographic sites while Fe3+ is distributed over both sites. While X-ray and neutron diffraction agreed that all four compositions are monophasic with space group P21/n, TEM revealed different levels of compositional inhomogeneity at the subcrystal scale, which, in the case of BaLa2FeNiSbO9, leads to the occurrence of both a P21/n and an I2/m phase. Magnetometry and neutron diffraction show that these perovskites are ferrimagnets with a G-type magnetic structure. Their relatively low magnetisation can be attributed to their inhomogeneity. This work demonstrates the importance of studying the microstructure of complex compositions. |
| spellingShingle | Hendrickx, M Tang, Y Hunter, EC Battle, PD Cadogan, JM Hadermann, J CaLa2FeCoSbO9 and ALa2FeNiSbO9 (A = Ca, Sr, Ba): cation-ordered, inhomogeneous, ferrimagnetic perovskites |
| title | CaLa2FeCoSbO9 and ALa2FeNiSbO9 (A = Ca, Sr, Ba): cation-ordered, inhomogeneous, ferrimagnetic perovskites |
| title_full | CaLa2FeCoSbO9 and ALa2FeNiSbO9 (A = Ca, Sr, Ba): cation-ordered, inhomogeneous, ferrimagnetic perovskites |
| title_fullStr | CaLa2FeCoSbO9 and ALa2FeNiSbO9 (A = Ca, Sr, Ba): cation-ordered, inhomogeneous, ferrimagnetic perovskites |
| title_full_unstemmed | CaLa2FeCoSbO9 and ALa2FeNiSbO9 (A = Ca, Sr, Ba): cation-ordered, inhomogeneous, ferrimagnetic perovskites |
| title_short | CaLa2FeCoSbO9 and ALa2FeNiSbO9 (A = Ca, Sr, Ba): cation-ordered, inhomogeneous, ferrimagnetic perovskites |
| title_sort | cala2fecosbo9 and ala2fenisbo9 a ca sr ba cation ordered inhomogeneous ferrimagnetic perovskites |
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