Evidence for Griffiths phase in multiferroic BiMnO3 and BiFe0.5Mn0.5O3 films
DOI:
https://doi.org/10.1063/1.4709440Ключові слова:
multiferroics, thin films, crystal structure, Griffiths phase.Анотація
Microstructure and magnetic properties of the BiMnO3 and BiFe0.5Mn0.5O3 films, prepared by the rf magnetron sputtering on LaAlO3 (001) single-crystalline substrate, have been investigated. The selected-area electron diffraction analysis allows us to indentify the crystal structure of the BiMnO3 film as an orthorhombic one while the BiFe0.5Mn0.5O3 film has a hexagonal lattice symmetry. The high-resolution electron microscopy study reveals the presence of strip-domain phase with a periodic spacing of about 3c in both films. The magnetic measurements show that in addition to the basic paramagnetic phase, the films manifest the Griffiths phase behavior in a wide temperature range. We argue that the observed weak ferromagnetism is provided by an appearance of the strip-domain layered inclusions rather than the intrinsic physical origin of the films.Завантаження
Дані завантаження ще не доступні.
Downloads
Опубліковано
2012-03-16
Як цитувати
(1)
Prokhorov, V.; Kaminsky, G.; Kim, J.; Yoo, Y.; Lee, Y.; Svetchnikov, V.; Levchenko, G.; Nikolaenko, Y.; Khokhlov, V. Evidence for Griffiths Phase in Multiferroic BiMnO3 and BiFe0.5Mn0.5O3 Films. Fiz. Nizk. Temp. 2012, 38, 531-537.
Номер
Розділ
Низькотемпературний магнетизм