Monoclinic honeycomb-layered compound Li3Ni2SbO6: preparation, crystal structure and magnetic properties
Two synthetic routes—ion-exchange preparation from layered Na3Ni2SbO6 at 300 °C and direct solid-state synthesis at 1150 °C resulted in layered Li3Ni2SbO6, a cation-ordered derivative from the rocksalt type. The Fddd form reported earlier could not be reproduced. According to the XRD Rietveld analys...
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| Hauptverfasser: | , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
2012
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| In: |
Dalton transactions
Year: 2011, Jahrgang: 41, Heft: 2, Pages: 572-580 |
| ISSN: | 1477-9234 |
| DOI: | 10.1039/C1DT11322D |
| Online-Zugang: | Verlag, Volltext: http://dx.doi.org/10.1039/C1DT11322D Verlag, Volltext: https://pubs.rsc.org/en/content/articlelanding/2012/dt/c1dt11322d 
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| Verfasserangaben: | Elena A. Zvereva, Maria A. Evstigneeva, Vladimir B. Nalbandyan, Olga A. Savelieva, Sergey A. Ibragimov, Olga S. Volkova, Larisa I. Medvedeva, Alexander N. Vasiliev, Ruediger Klingeler and Bernd Buechner |
| Zusammenfassung: | Two synthetic routes—ion-exchange preparation from layered Na3Ni2SbO6 at 300 °C and direct solid-state synthesis at 1150 °C resulted in layered Li3Ni2SbO6, a cation-ordered derivative from the rocksalt type. The Fddd form reported earlier could not be reproduced. According to the XRD Rietveld analysis, Li3Ni2SbO6 is a pseudohexagonal monoclinic structure, C2/m, with a = 5.1828(2) Å, b = 8.9677(3) Å, c = 5.1577(2) Å, β = 109.696(2)°. No Li/Ni mixed occupancy was detected. At high temperatures, the magnetic susceptibility follows the Curie-Weiss law with a positive value of Weiss temperature, ∼8 K, indicating a predominance of ferromagnetic interactions. However, Li3Ni2SbO6 orders antiferromagnetically at TN ∼ 15 K. The effective magnetic moment is 4.3 μB/f.u. which satisfactorily agrees with theoretical estimations assuming high-spin configuration of Ni2+ (S = 1). Electron spin resonance (ESR) spectra show single Lorentzian shape line attributed to Ni2+ion in octahedral coordination. The absorption is characterized by isotropic temperature independent effective g-factor g = 2.150 ± 0.005. In accordance with the layered honeycomb crystal structure determined for Li3Ni2SbO6, the superexchange interaction between Ni2+ ions through Ni-O-Ni pathways within Ni2SbO6 layers are assumed to be ferromagnetic, while the dominant interaction between layers is antiferromagnetic. |
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| Beschreibung: | First published on 03 Nov 2011 Im Titel sind die Ziffern 3, 2 und 6 tiefgestellt Gesehen am 14.11.2018 |
| Beschreibung: | Online Resource |
| ISSN: | 1477-9234 |
| DOI: | 10.1039/C1DT11322D |