Comparative study of the magnetic properties of La3Ni2B'O9 for B' = Nb, Taor Sb
Polycrystalline samples of La 3 Ni 2 NbO 9 and La 3 Ni 2 TaO 9 have been characterised by X-ray and neutron diffraction, electron microscopy, magnetometry and muon spin relaxation (µSR); the latter technique was also applied to La 3 Ni 2 SbO 9 . On the length scale of a neutron diffraction experimen...
| Main Authors: | , , , , , , , |
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| Format: | Journal article |
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Elsevier
2017
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| _version_ | 1826270017064271872 |
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| author | Chin, C Battle, P Blundell, S Hunter, E Lang, F Hendrickx, M Paria Sena, R Hadermann, J |
| author_facet | Chin, C Battle, P Blundell, S Hunter, E Lang, F Hendrickx, M Paria Sena, R Hadermann, J |
| author_sort | Chin, C |
| collection | OXFORD |
| description | Polycrystalline samples of La 3 Ni 2 NbO 9 and La 3 Ni 2 TaO 9 have been characterised by X-ray and neutron diffraction, electron microscopy, magnetometry and muon spin relaxation (µSR); the latter technique was also applied to La 3 Ni 2 SbO 9 . On the length scale of a neutron diffraction experiment, the six-coordinate sites of the monoclinic perovskite structure are occupied in a 1:1 ordered manner by Ni and a random ⅓Ni/⅔B′ mixture. Electron microscopy demonstrated that this 1:1 ordering is maintained over microscopic distances, although diffuse scattering indicative of short-range ordering on the mixed site was observed. No magnetic Bragg scattering was observed in neutron diffraction patterns collected from La 3 Ni 2 B′O 9 (B′ = Nb or Ta) at 5 K although in each case µSR identified the presence of static spins below 30 K. Magnetometry showed that La 3 Ni 2 NbO 9 behaves as a spin glass below 29 K but significant short-range interactions are present in La 3 Ni 2 TaO 9 below 85 K. The contrasting properties of these compounds are discussed in terms of their microstructure. |
| first_indexed | 2024-03-06T21:34:17Z |
| format | Journal article |
| id | oxford-uuid:45b27e46-0958-4302-a997-0e5dcaba065f |
| institution | University of Oxford |
| last_indexed | 2024-03-06T21:34:17Z |
| publishDate | 2017 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | oxford-uuid:45b27e46-0958-4302-a997-0e5dcaba065f2022-03-26T15:09:24ZComparative study of the magnetic properties of La3Ni2B'O9 for B' = Nb, Taor SbJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:45b27e46-0958-4302-a997-0e5dcaba065fSymplectic Elements at OxfordElsevier2017Chin, CBattle, PBlundell, SHunter, ELang, FHendrickx, MParia Sena, RHadermann, JPolycrystalline samples of La 3 Ni 2 NbO 9 and La 3 Ni 2 TaO 9 have been characterised by X-ray and neutron diffraction, electron microscopy, magnetometry and muon spin relaxation (µSR); the latter technique was also applied to La 3 Ni 2 SbO 9 . On the length scale of a neutron diffraction experiment, the six-coordinate sites of the monoclinic perovskite structure are occupied in a 1:1 ordered manner by Ni and a random ⅓Ni/⅔B′ mixture. Electron microscopy demonstrated that this 1:1 ordering is maintained over microscopic distances, although diffuse scattering indicative of short-range ordering on the mixed site was observed. No magnetic Bragg scattering was observed in neutron diffraction patterns collected from La 3 Ni 2 B′O 9 (B′ = Nb or Ta) at 5 K although in each case µSR identified the presence of static spins below 30 K. Magnetometry showed that La 3 Ni 2 NbO 9 behaves as a spin glass below 29 K but significant short-range interactions are present in La 3 Ni 2 TaO 9 below 85 K. The contrasting properties of these compounds are discussed in terms of their microstructure. |
| spellingShingle | Chin, C Battle, P Blundell, S Hunter, E Lang, F Hendrickx, M Paria Sena, R Hadermann, J Comparative study of the magnetic properties of La3Ni2B'O9 for B' = Nb, Taor Sb |
| title | Comparative study of the magnetic properties of La3Ni2B'O9 for B' = Nb, Taor Sb |
| title_full | Comparative study of the magnetic properties of La3Ni2B'O9 for B' = Nb, Taor Sb |
| title_fullStr | Comparative study of the magnetic properties of La3Ni2B'O9 for B' = Nb, Taor Sb |
| title_full_unstemmed | Comparative study of the magnetic properties of La3Ni2B'O9 for B' = Nb, Taor Sb |
| title_short | Comparative study of the magnetic properties of La3Ni2B'O9 for B' = Nb, Taor Sb |
| title_sort | comparative study of the magnetic properties of la3ni2b o9 for b nb taor sb |
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