Title :
Ferroelectric and magnetic properties of multiferroic FeOx-BiFeO3 composite films
Author :
Naganuma, Hiroshi ; Okubo, Tomosato ; Okamura, Soichiro
Author_Institution :
Tokyo Univ. of Sci., Tokyo
Abstract :
FeOx-BiFeO3 composite films were fabricated by a chemical solution deposition (CSD) method onto the Pt/Ti/SiO2/Si(100) substrates. The remanence magnetization of almost 2 emu/cm3 and the magnetic coercive field of 1.5 kOe was obtained due to the formation of the magnetic oxide phase at the composition of Fe/Bi=1.25 with the annealing temperature of 923 K for 30 min under the oxygen flow. In this specimen, the remanent polarization was blow 10 muC/cm2 measured at 90 K, which is quite lower than that of the BiFeO3 films. This is because the formation of the Bi2Fe4O9 pyrochlore phase.
Keywords :
annealing; bismuth compounds; coercive force; composite materials; dielectric hysteresis; dielectric polarisation; ferroelectric thin films; ferromagnetic materials; iron compounds; liquid phase deposition; magnetic thin films; multiferroics; remanence; FeOx-BiFeO3; Pt-Ti-SiO2-Si; annealing; chemical solution deposition; ferroelectric hysteresis loops; ferroelectric properties; magnetic coercive field; magnetic properties; multiferroic composite films; remanence magnetization; remanent polarization; temperature 90 K; temperature 923 K; time 30 min; Annealing; Chemicals; Ferroelectric films; Ferroelectric materials; Iron; Magnetic films; Magnetic properties; Magnetization; Remanence; Temperature;
Conference_Titel :
Applications of Ferroelectrics, 2007. ISAF 2007. Sixteenth IEEE International Symposium on
Conference_Location :
Nara
Print_ISBN :
978-1-4244-1334-8
Electronic_ISBN :
1099-4734
DOI :
10.1109/ISAF.2007.4393290
