Influence of the order of layers deposition and annealing temperature on the multiferroic properties of multilayer BiFeO3-CoFe2O4 nanocomposites.

Authors :: Flores, Segundo J. Rojas
Silva, Luis M. Angelats
Lopez, Jose A. Roldan
Sizov, Alexander S.
Emelianov, Nikita A.
Source :: Ferroelectrics; 2019, Vol. 543 Issue 1, p107-114, 8p
Publication Year :: 2019
Abstract: Multilayer (14 layers, 115–122 nm thick each) BiFeO<subscript>3</subscript>/CoFe<subscript>2</subscript>O<subscript>4</subscript>/substrate (BFO/CFO) and CoFe<subscript>2</subscript>O<subscript>4</subscript>/BiFeO<subscript>3</subscript>/substrate (CFO/BFO) nanocomposites were obtained by the method of sol-gel synthesis. It is shown that all samples of the obtained nanocomposites have multiferroic properties at room temperature. At the same time, there is a clearly demonstrated effect of the layering order on the values of remnant polarization and magnetization of these samples. This influence originates from the much smaller size of the crystallites in the BiFeO<subscript>3</subscript> layers for the samples deposited in order (BFO/CFO) at various annealing temperatures (700, 725, and 750 °C). [ABSTRACT FROM AUTHOR]

Subjects :: ANNEALING of metals
CHIEF financial officers
SOL-gel processes
TEMPERATURE
MAGNETIZATION

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