Grain size effect on magnetic properties of REMnO₃ (RE = Pr, Nd)
Vernadsky National Library of Ukraine
Переглянути архів Інформація| Поле | Співвідношення | |
| Title |
Grain size effect on magnetic properties of REMnO₃ (RE = Pr, Nd)
|
|
| Creator |
Dyakonov, V.
Bażela, W. Duraj, R. Dul, M. Kravchenko, Z. Zubov, E. Dyakonov, K. Baran, S. Szytuła, A. Szymczak, H. |
|
| Subject |
Низкотемпеpатуpный магнетизм
|
|
| Description |
X-ray diffraction and magnetic using dc and ac methods measurements of the polycrystalline and nanosize REMnO₃ (RE = Pr, Nd) powdered samples have been performed. The nanosize manganites were synthesized with a sol-gel method at different (800, 850 and 900 °C) temperatures. The average size of synthesized nanoparticles (from 56 to 89 nm) and polycrystalline powders (above 200 nm) was estimated using the x-ray diffraction data. All the compounds studied crystallize in the orthorhombic crystal structure (space group Pnma) at room temperature with smaller values of the lattice parameters in the nanosamples. The temperature-dependent ac magnetic susceptibilities show a sharp high-temperature peak connected with Mn magnetic moments ordering. The low-temperature maximum of magnetic susceptibility is proposed to be due to the polarization of the rareearth sublattice by an effective exchange field of the Mn ordered sublattice. The antiferromagnetic ordering of Mn sublattice and paramagnetic Curie temperatures as well as the magnetic moment values for the nanosize samples were found to be smaller than those for polycrystalline sample. |
|
| Date |
2017-05-29T14:39:29Z
2017-05-29T14:39:29Z 2013 |
|
| Type |
Article
|
|
| Identifier |
Grain size effect on magnetic properties of REMnO₃ (RE = Pr, Nd) / V. Dyakonov, W. Bażelа, R. Duraj, M. Dul, Z. Kravchenko, E. Zubov,
K. Dyakonov, S. Baran, A. Szytuła, H. Szymczak // Физика низких температур. — 2013. — Т. 39, № 4. — С. 452–458. — Бібліогр.: 11 назв. — англ.
0132-6414 PACS: 75.30.–m, 75.60.–d, 75.75.–c http://dspace.nbuv.gov.ua/handle/123456789/118273 |
|
| Language |
en
|
|
| Relation |
Физика низких температур
|
|
| Publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
|
|