- Tytuł:
- Hyperfine interactions and irreversible magnetic behavior in multiferroic Aurivillius compounds
- Autorzy:
-
Jartych, E.
Gąska, K.
Przewoźnik, J.
Kapusta, C.
Lisińska-Czekaj, A.
Czekaj, D.
Surowiec, Z. - Powiązania:
- https://bibliotekanauki.pl/articles/147358.pdf
- Data publikacji:
- 2013
- Wydawca:
- Instytut Chemii i Techniki Jądrowej
- Tematy:
-
Aurivillius compounds
hyperfine interactions
magnetic properties
Mössbauer spectroscopy
multiferroics - Opis:
- In this work investigations of structure and magnetic properties of conventionally sintered Bim+1Ti3Fem.3O3m+3 compounds with 4 less-than or equal to m less-than or equal to 8 were performed using X-ray diffraction, Mossbauer spectroscopy and vibrating sample magnetometry. Room-temperature Mossbauer 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,chi sigma(T), provided magnetic ordering temperatures and revealed an irreversibility in Aurivillius compounds with m greater-than or equal to 5. In the case of Bi5Ti3FeO15 compound the chi sigma(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 chi sigma indicates a spin-glass type disordered magnetism with frustration due to a random distribution of Fe on Ti at their sites.
- Źródło:
-
Nukleonika; 2013, 58, 1; 47-51
0029-5922
1508-5791 - Pojawia się w:
- Nukleonika
- Dostawca treści:
- Biblioteka Nauki
Artykuł