Magnetic phase transitions in the system La(Fe,Co,Ai)13 at high pressures
| Autor: | Yu.S. Bersenev, A.S. Yermolenko, A.A. Ganin, I.V. Medvedeva, Ye.V. Shcherbakova |
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| Rok vydání: | 1992 |
| Předmět: |
Materials science
Condensed matter physics Mechanical Engineering Metals and Alloys chemistry.chemical_element Context (language use) engineering.material Instability Condensed Matter::Materials Science Ferromagnetism chemistry Mechanics of Materials Electrical resistivity and conductivity Materials Chemistry engineering Antiferromagnetism Condensed Matter::Strongly Correlated Electrons Magnetic phase Cobalt Invar |
| Zdroj: | Journal of Alloys and Compounds. 178:403-412 |
| ISSN: | 0925-8388 |
| DOI: | 10.1016/0925-8388(92)90281-d |
| Popis: | The magnetic properties and electrical resistivity of La(Fe0.88-xCoxAl0.12)13 alloys (0.009 0.01) and ferromagnetic-antiferromagnetic-paramagnetic transitions (x < 0.01) in the course of heating were studied at both ambient and high pressure. The action of pressure on the magnetic phase transitions is qualitatively similar to a decrease of cobalt concentration in the La(Fe0.88−xCoxAl0.12)13 alloys. Applying pressure results in a decrease in the magnetic phase transition temperatures. For alloys with concentrations in the vicinity of the AF-F transition (x = 0.02-0.04) antiferromagnetic features were observed to occur under pressure. The results are discussed in the context of the instability of the ferromagnetic state in this Invar system. |
| Databáze: | OpenAIRE |
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