http://hdl.handle.net/20.500.12128/14719
Tytuł: | Hyperfine interactions and irreversible magnetic behavior in multiferroic aurivillius compounds |
Autor: | Jartych, Elżbieta Gąska, Karolina Przewoźnik, Janusz Kapusta, Czesław Lisińska-Czekaj, Agata Czekaj, Dionizy Surowiec, Zbigniew |
Słowa kluczowe: | Aurivillius compounds; hyperfine interactions; magnetic properties; Mössbauer spectroscopy; multiferroics |
Data wydania: | 2013 |
Źródło: | Nukleonika, Vol. 58, no. 1 (2013), s. 47-51 |
Abstrakt: | In this work investigations of structure and magnetic properties of conventionally sintered Bim+1Ti3Fem–3O3m+3 compounds with 4 ≤ m ≤ 8 were performed using X-ray diffraction, Mössbauer spectroscopy and vibrating sample magnetometry. Room-temperature Mössbauer spectra of the compounds correspond to a paramagnetic state, however, low temperature measurements (80 K) reveal the antiferromagnetic state with a residual paramagnetic phase. Temperature dependencies of magnetic susceptibility, χσ(T), provided magnetic ordering temperatures and revealed an irreversibility in Aurivillius compounds with m ≥ 5. In the case of Bi5Ti3FeO15 compound the χσ(T) dependence shows a paramagnetic behavior down to 2 K. The Bi6Ti3Fe2O18 compound reveals a magnetic ordering at 11 K. The compounds with m = 6–8 show a magnetic ordering at temperatures higher than 200 K. Highly irreversible character of their temperature dependencies of χσ indicates a spin-glass type disordered magnetism with frustration due to a random distribution of Fe on Ti at their sites. |
URI: | http://hdl.handle.net/20.500.12128/14719 |
ISSN: | 1508-5791 0029-5922 |
Pojawia się w kolekcji: | Artykuły (WNŚiT) |
Plik | Opis | Rozmiar | Format | |
---|---|---|---|---|
Jartych_Hyperfine_interactions_and_irreversible.pdf | 400,76 kB | Adobe PDF | Przejrzyj / Otwórz |
Uznanie autorstwa - użycie niekomercyjne, bez utworów zależnych 3.0 Polska Creative Commons