Synthesis and Characterization of the Reduced Single-Layer Manganite Sr2MnO3.5+x

Gillie, Lisa J.; Wright, Adrian J.; Hadermann, Joke; Tendeloo, G. van; Greaves, C.

doi:10.1006/jssc.2002.9636

Cited by 33 publications

(54 citation statements)

References 17 publications

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“…The calculated lattice parameters were also, where possible, compared with values from the literature [13,14] and were found to be in good agreement with previous data obtained from samples prepared in a similar manner to those used in this study. Variation in the lattice parameters reported by other authors can generally be explained by the variation in sample preparation technique which will lead to a variation in anion stoichiometry.…”

Section: Structuresupporting

confidence: 86%

“…Therefore the absence of a sharp increase in c-parameter suggests that the oxidation state of the manganese ion remains reasonably constant for these initial compositions. The increase in a-parameter (over the initial three compositions) is most likely a result of the filling of oxygen vacancies, which have been shown to occupy the manganese planes within this material [13]. The increase in the c-parameter from the 30% lanthanum doped composition onwards suggests a reduction of manganese on increasing lanthanum content.…”

Section: Structurementioning

confidence: 84%

“…1. Previous studies of the closely related lanthanum nickel/cobalt system (La 2 Ni 1−x Co x O 4+δ ,0 ≤ x ≤ 1) [9] and Sr 2 MnO 4−δ [13] have both suggested that the cparameter in this structure type is largely dependant on the ionic radii, and hence the oxidation state, of the transition metal ion. Therefore the absence of a sharp increase in c-parameter suggests that the oxidation state of the manganese ion remains reasonably constant for these initial compositions.…”

Section: Structurementioning

confidence: 99%

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Structure, stability and electrical properties of the La(2−x)SrxMnO4±δ solid solution series

et al. 2006

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/npsi/ctrl?action=rtdoc&an=9064984&lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?action=rtdoc&an=9064984&lang=frAccess and use of this website and the material on it are subject to the Terms and Conditions set forth at http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. For the publisher's version, please access the DOI link below./ Pour consulter la version de l'éditeur, utilisez le lien DOI ci-dessous.http://dx.doi.org/10.1016/j.ssi. 2006.01.009 Solid State Ionics, 177, 19-25, pp. 1849Ionics, 177, 19-25, pp. -1853Ionics, 177, 19-25, pp. , 2006 Structure, stability and electrical properties of the La(2− AbstractSingle phase materials of the La (2−x) Sr x MnO 4±δ (0.6 ≤ x ≤ 2.0) solid solution series were prepared via solid state reaction. The structure of each material was examined at room temperature and determined to be tetragonal for all phases examined. An expansion in lattice volume was observed on increasing lanthanum content. The stability and thermal expansion of each member of the solid solution series was determined via the use of in situ high temperature X-ray diffraction. It was found that all materials remained stable up to a temperature of 800°C. Thermal expansion coefficients were found to be in the region of 15 × 10 − 6 K − 1 for La (2−x) Sr x MnO 4±δ compounds where x N 1.4. The electrical conductivity of each phase was also determined over a similar temperature range with a maximum value of ∼6 Scm − 1 at 900°C for the x = 1.8 phase.

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Section: Structuresupporting

confidence: 86%

Section: Structurementioning

confidence: 84%

Section: Structurementioning

confidence: 99%

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Structure, stability and electrical properties of the La(2−x)SrxMnO4±δ solid solution series

et al. 2006

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“…Samples of composition Sr 2 MnO 3±x were prepared using standard solid state synthesis techniques as previously suggested 6,19 . A significant background was observed, originating from the quartz ampoule used to contain the sample in the neutron beamline.…”

Section: Methodsmentioning

confidence: 99%

“…In the refinement, as discussed previously 19 , certain isotropic temperature factors have been fixed to a slight positive value as these positions had a tendency to refine to meaningless values. This may be partially attributed to a distorted environment around the Mn1 position due to the incomplete occupancy of the O4 position.…”

mentioning

confidence: 99%