Crystal chemistry, structure and magnetic properties of the Cu(MoxW1−x)O4solid solution series
| Autor: | Michael Knapp, Brunhilde Thybusch, Garry J. McIntyre, Hans Weitzel, Helmut Ehrenberg, Bjoern Schwarz, Anatoliy Senyshyn, Hartmut Fuess |
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| Rok vydání: | 2008 |
| Předmět: | |
| Zdroj: | Philosophical Magazine. 88:1235-1258 |
| ISSN: | 1478-6443 1478-6435 |
| Popis: | For a solid solution series the common description of a crystal as a homogeneous solid formed by a repeating, three-dimensional pattern of a unit cell is in principle no longer applicable, taking the statistical chemical distribution of the substituting ions into account. The Cu(Mo x W1−x )O4 solid solution series represents an appropriate system to investigate how this chemical distribution affects the details of the crystal structure: Due to different coordination preferences of the isovalent diamagnetic ions W and Mo, a decisive magnetic exchange path couples ferromagnetically in CuWO4, but antiferromagnetically in the isostructural compound CuMoO4-III. From the investigations of the magnetic properties of the solid solution series it can be inferred for a certain range of stoichiometries that the Mo/W cation disorder of the solid solution series does not result in a corresponding disordered distribution of magnetic coupling constants but in the formation of a super structure of them. The magnetic supe... |
| Databáze: | OpenAIRE |
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