Verteilung und Valenz der Kationen im Spinellsystem ZnFeGaO4-Fe2GaO4
| dc.contributor.author | Rabbani, Sima | |
| dc.contributor.author | Riedel, Erwin | |
| dc.date.accessioned | 2018-11-10T16:34:57Z | |
| dc.date.available | 2018-11-10T16:34:57Z | |
| dc.date.issued | 1996 | |
| dc.description.abstract | For the spinel system Zn1-ϰFe-λGaϰ-λ(Fe1+λGa1-λ)O4 the index λ has been determined by X-ray measurements: λ = 0 in the region 0 ≤ ϰ ≤ 0,35; the increase of λ to 0,62 within 0,35 ≤ χ ≤ 1 is nearly linear. The distribution of Fe2+ and Fe3+ ions over the lattice sites has been derived from lattice constants and ionic distances, and also by Mössbauer spectroscopy. In the spinels with ϰ < 0,3 the tetrahedral sites are preferably occupied by Fe2+ ions, for x > 0,5 Fe3+ ions dominate. At ϰ = 0,4 the occupation of the lattice sites by iron ions is statistical, the high temperature Mössbauer spectrum shows a single line only. All spinels are n-type hopping conductors mainly conducting via the octahedral sites. | en |
| dc.identifier.eissn | 1865-7117 | |
| dc.identifier.issn | 0932-0776 | |
| dc.identifier.uri | https://depositonce.tu-berlin.de/handle/11303/8477 | |
| dc.identifier.uri | http://dx.doi.org/10.14279/depositonce-7623 | |
| dc.language.iso | de | |
| dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/3.0/ | |
| dc.subject.ddc | 540 Chemie und zugeordnete Wissenschaften | de |
| dc.subject.other | iron gallium spineis | en |
| dc.subject.other | cation distribution | en |
| dc.subject.other | valence distribution | en |
| dc.subject.other | Mössbauer spectra | en |
| dc.subject.other | Seebeck coefficients | en |
| dc.title | Verteilung und Valenz der Kationen im Spinellsystem ZnFeGaO4-Fe2GaO4 | de |
| dc.title.translated | Distribution and Valence of the Cations in the Spinel System ZnFeGaO4-Fe2GaO4 | en |
| dc.type | Article | en |
| dc.type.version | publishedVersion | en |
| dcterms.bibliographicCitation.doi | 10.1515/znb-1996-0111 | |
| dcterms.bibliographicCitation.issue | 1 | |
| dcterms.bibliographicCitation.journaltitle | Zeitschrift für Naturforschung B | de |
| dcterms.bibliographicCitation.originalpublishername | De Gruyter | en |
| dcterms.bibliographicCitation.originalpublisherplace | Berlin | en |
| dcterms.bibliographicCitation.pageend | 51 | |
| dcterms.bibliographicCitation.pagestart | 47 | |
| dcterms.bibliographicCitation.volume | 51 | |
| tub.accessrights.dnb | free | |
| tub.affiliation | Fak. 2 Mathematik und Naturwissenschaften::Inst. Chemie | de |
| tub.affiliation.faculty | Fak. 2 Mathematik und Naturwissenschaften | de |
| tub.affiliation.institute | Inst. Chemie | de |
| tub.publisher.universityorinstitution | Technische Universität Berlin | de |
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