Superconducting and Normal State Properties of Barium Tantalum Sulfide
| Autor: | Hiroshi Nozaki, Mitsuko Onoda, Masanobu Saeki |
|---|---|
| Rok vydání: | 1995 |
| Předmět: |
Superconductivity
Curie–Weiss law Magnetoresistance Condensed matter physics Chemistry Superlattice Type (model theory) Condensed Matter Physics Magnetic susceptibility Electronic Optical and Magnetic Materials Inorganic Chemistry Paramagnetism Electrical resistivity and conductivity Materials Chemistry Ceramics and Composites Physical and Theoretical Chemistry |
| Zdroj: | Journal of Solid State Chemistry. 116:392-399 |
| ISSN: | 0022-4596 |
| Popis: | Two types of compound in BaTa{sub 2}S{sub 5} were specified according to their physical properties and superlattice arrangements. Electrical resistivity and ac magnetic susceptibility measurements indicate that both compounds are superconducting with transition temperatures T{sub c} = 2.88 or 3.14 K, respectively, being dependent on formation processes of the specimens. The normal state properties, such as resistivity, Hall coefficient, magnetoresistance, and magnetic susceptibility, are also different between the two types of compound. Especially, magnetic susceptibility for the one type with lower T{sub c} showing a Curie-Weiss-type paramagnetism below about 50 K, while that with higher T{sub c} shows a temperature independent paramagnetism with a clear cusp at 70 K. Electron diffusion experiments show that the superlattice of the former compound is a{radical}28 x a{radical}28 x nc, while the structure of the latter consists of two types of superlattice which stack alternatively along the c axis. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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