[Sans titre]
| hal.structure.identifier | Institut für Kristallographie der Technischen Hochschule | |
| dc.contributor.author | KAISER, V. | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | LE LIRZIN, Antoine | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | DARRIET, Jacques | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | TRESSAUD, Alain | |
| hal.structure.identifier | Philipps Universität Marburg = Philipps University of Marburg | |
| dc.contributor.author | HOLLER, H. | |
| hal.structure.identifier | Philipps Universität Marburg = Philipps University of Marburg | |
| dc.contributor.author | BABEL, Dietrich | |
| dc.date.issued | 2002 | |
| dc.identifier.issn | 0044-2313 | |
| dc.description.abstractEn | Single crystals of six compounds Ba2CaMIIM2IIIF14 were prepared to refine their usovite type structure (space group C2/c, Z = 4) using X-ray diffractometer data. The cell parameters of the phases studied with MIIM2III= MnV2, FeV2, CuMn2, MnFe2, CuFe2 und CuGa2 are within the range 1374≤a/pm≤1384, 534≤b/pm≤542, 1474≤c/pm≤1510, 91, 3≤ß/°≤93, 2. The atoms Ca and MII are incompletely ordered on the 8- and 6-coordinated positions, 4e and 4b, respectively. In the case of Ba2CaFeV2F14 and Ba2CaCuGa2F14 there is reciprocal substitution (x≈0, 1): (Ca1-xMxII) (4e) and (M1-xIICax) (4b). In the case of the other usovites Ca-enriched phases Ba2Ca(M1-yIICay)M2IIIF14 occured (up to y≈0, 35), exhibiting partial substitution at the octahedral position (4b) only, showing a corresponding increase in MII-F distances. The distortion of [MIIF6] and [MIIIF6] octahedra within the structure is considerably enhanced on replacement by CuII and MnIII. The results of powder magnetic susceptibility measurements of Ba2CaMnV2F14 and Ba2CaFeV2F14 (TN≈7K) are reported. | |
| dc.language.iso | en | |
| dc.publisher | Wiley-VCH Verlag | |
| dc.subject | Structure elucidation | |
| dc.subject | Transition metals | |
| dc.subject | Jahn-Teller distortion | |
| dc.subject | Magnetic properties | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1002/1521-3749(200212)628:12<2617::AID-ZAAC2617>3.0.CO;2-4 | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | Journal of Inorganic and General Chemistry / Zeitschrift für anorganische und allgemeine Chemie | |
| bordeaux.page | 2617-2624 | |
| bordeaux.volume | 628 | |
| bordeaux.issue | 12 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00817302 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00817302v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal%20of%20Inorganic%20and%20General%20Chemistry%20/%20Zeitschrift%20f%C3%BCr%20anorganische%20und%20allgemeine%20Chemie&rft.date=2002&rft.volume=628&rft.issue=12&rft.spage=2617-2624&rft.epage=2617-2624&rft.eissn=0044-2313&rft.issn=0044-2313&rft.au=KAISER,%20V.&LE%20LIRZIN,%20Antoine&DARRIET,%20Jacques&TRESSAUD,%20Alain&HOLLER,%20H.&rft.genre=article |
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