Ferroelectric and magnetic properties of multiferroic FeOx-BiFeO3 composite films

Author

Naganuma, Hiroshi ; Okubo, Tomosato ; Okamura, Soichiro

Author_Institution

Tokyo Univ. of Sci., Tokyo

fYear

2007

fDate

27-31 May 2007

Firstpage

434

Lastpage

436

Abstract

FeO_x-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; FeO_x-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;

fLanguage

English

Publisher

ieee

Conference_Titel

Applications of Ferroelectrics, 2007. ISAF 2007. Sixteenth IEEE International Symposium on

Conference_Location

Nara

ISSN

1099-4734

Print_ISBN

978-1-4244-1334-8

Electronic_ISBN

1099-4734

Type

conf

DOI

10.1109/ISAF.2007.4393290

Filename

4393290