Anisotropic ferroquadrupolar phase in magnetic fields for PrCu2
| Autor: | Y. O¯nuki, Shingo Araki, Kazuhiko Sugiyama, P. Ahmet, M. Abliz, Rikio Settai |
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| Rok vydání: | 1998 |
| Předmět: |
Materials science
Condensed matter physics Transition temperature Jahn–Teller effect Magnetostriction Condensed Matter Physics Thermal expansion Electronic Optical and Magnetic Materials Magnetic field symbols.namesake symbols Condensed Matter::Strongly Correlated Electrons Anisotropy Hamiltonian (quantum mechanics) Phase diagram |
| Zdroj: | Journal of Magnetism and Magnetic Materials. :357-358 |
| ISSN: | 0304-8853 |
| Popis: | We have studied the origin of the cooperative Jahn-Teller effect in PrCu 2 . We have determined the anisotropic phase diagram by measuring the thermal expansion and the magnetostriction in magnetic fields up to 15 T. The Jahn-Teller transition temperature is almost constant for the field along the a- and c -axis, while it decreases with increasing the field along the b -axis. The phase diagram can be explained qualitatively by including the quadrupolar interaction for 〈O xy 〉 in the crystalline electric field Hamiltonian. |
| Databáze: | OpenAIRE |
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