The substitution of vanadium by chromium in thallium pentavanadium octasulfide. Part III. Magnetic properties
| Autor: | F. Tuczek, E. Wörner, Wolfgang Bensch |
|---|---|
| Rok vydání: | 1995 |
| Předmět: |
Curie–Weiss law
Magnetic moment Chemistry Mechanical Engineering Inorganic chemistry Condensed Matter Physics Magnetic susceptibility Paramagnetism Crystallography Delocalized electron Mechanics of Materials Content (measure theory) Atom Antiferromagnetism Condensed Matter::Strongly Correlated Electrons General Materials Science |
| Zdroj: | Materials Research Bulletin. 30:1065-1074 |
| ISSN: | 0025-5408 |
| DOI: | 10.1016/0025-5408(95)00109-3 |
| Popis: | The investigation of the magnetic properties of the substitution series TlV{sub 5{minus}y}Cr{sub y}S{sub 8}(1{le}y{le}4) revealed a complex magnetic behavior due to the successive formation of Cr{sub 2}-dimers. The Cr atoms within the dimers are antiferromagnetically coupled and with raising Cr content the coupling constant becomes more negative indicating stronger antiferromagnetic exchange interactions. The magnetic behavior is further characterized by a Curie-Weiss like contribution from nearly isolated Cr atoms and a temperature independent paramagnetism (TIP) from delocalized conduction electrons. With increasing substitution of V by Cr the TIP decreases and the magnetic moment per Cr atom increases. In addition, the evaluation of the magnetic susceptibilities gives hints for a preferential occupation of the three different crystallographic sites by the Cr atoms. |
| Databáze: | OpenAIRE |
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