Ba2Fe10Sn2CoO22: Growth, crystal structure (120 K), and magnetic properties
| Autor: | Xavier Batlle, Salvador Galí, R. Rodríguez-Clemente, Felip Sandiumenge, Xavier Obradors |
|---|---|
| Rok vydání: | 1991 |
| Předmět: |
chemistry.chemical_classification
Valence (chemistry) Chemistry Stereochemistry Bond strength Crystal structure Condensed Matter Physics Electronic Optical and Magnetic Materials Inorganic Chemistry Crystallography Lattice (order) X-ray crystallography Materials Chemistry Ceramics and Composites Crystallite Physical and Theoretical Chemistry Hexagonal ferrite Inorganic compound |
| Zdroj: | Journal of Solid State Chemistry. 92:213-218 |
| ISSN: | 0022-4596 |
| DOI: | 10.1016/0022-4596(91)90259-k |
| Popis: | We have grown single crystals of Ba2Fe10Sn2CoO22 in B2O3 flux. This phase is an isomorph of the novel K-type hexagonal ferrite. Using the starting composition we report here, a high yield of single crystals of the title compound is obtained as a unique phase over a wide cooling range. At 120 K the crystal structure has lattice parameters a = 5.9316(7) and c = 14.3128(32) A, Z = 1, and space group P 3 , although it has a strong P 3 m1 pseudosymmetry. The Sn location in the crystal structure is discussed in terms of apparent valences calculated from bond strengths. In addition, the apparent valence provides insight into the Co2+ location. Our results are compared with those previously obtained by other authors using powdered samples of the same and structurally related compounds. A preliminary magnetic study points to behaviour consistent with that reported previously for polycrystalline samples. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|