Domain structure of the antiferromagnetic insulating state in Nd0.5Sr0.5MnO3
| Autor: | P.J.M. van Bentum, Jan C. Maan, Peter C. M. Christianen, S. L. Gnatchenko, Alexander Chizhik, I. O. Shklyarevskiy, Geetha Balakrishnan, D. McK. Paul, Konstantin V. Kamenev |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
Phase transition
Soft Condensed Matter & Nanomaterials (HFML) Materials science Physics and Astronomy (miscellaneous) Magnetic domain Condensed matter physics A domain General Physics and Astronomy Correlated Electron Systems / High Field Magnet Laboratory (HFML) Condensed Matter Physics Manganite Solid State NMR Electronic Optical and Magnetic Materials Magnetic field Metal Crystal Ferromagnetism visual_art visual_art.visual_art_medium Antiferromagnetism Intermediate state Condensed Matter::Strongly Correlated Electrons Metal–insulator transition |
| Zdroj: | Journal of Magnetism and Magnetic Materials, 238, 2-3, pp. 140-144 Low Temperature Physics, 27, 923 Journal of Magnetism and Magnetic Materials, 238, 140-144 Low Temperature Physics, 27, 11, pp. 923 |
| ISSN: | 1063-777X 0304-8853 |
| DOI: | 10.1016/S0304-8853(01)00826-5 |
| Popis: | Optical reflectivity studies of the ferromagnetic metal (FMM) to antiferromagnetic insulator (AFI) phase transition are performed on Nd0.5Sr0.5MnO3 manganite in a wide temperature and magnetic field range. The formation of a domain structure in the AFI state during the FMM−AFI phase transition is observed. It is shown that the two types of domains observed are energetically equivalent states. On the basis of the experimental results and symmetry analysis we conclude that these domains are crystal twins. The twin domain structure of the AFI state in the Nd0.5Sr0.5MnO3 is visible in reflected unpolarized light due to a different tilting of the surface in the domains. The two-phase domain structure FMM+AFI formed in the vicinity of the phase transition is also studied. It is found that a thermodynamically equilibrium two-phase stripe domain structure does not develop. The absence of the magnetic intermediate state is due to the large energy of the interphase wall, which results in the stripe structure period... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect