TY - JOUR
T1 - Conduction mechanisms and enhanced multiferroic properties of 2-2 type Bi0.89Sm0.11FeO3-NiFe2O4 composition thin films
AU - Liu, Wenlong
AU - Tan, Guoqiang
AU - Xue, Xu
AU - Dong, Guohua
AU - Ren, Huijun
AU - Xia, Ao
N1 - Publisher Copyright:
© 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
PY - 2015
Y1 - 2015
N2 - Pure BiFeO3 (BFO), BiFeO3-NiFe2O4 (BFO-NFO) and Sm-doped Bi0.89Sm0.11FeO3-NiFe2O4 (BSFO-NFO) thin films were prepared on FTO/glass (SnO2:F) substrates via a sol-gel method. The effects of NFO layer and Sm-doping on the crystalline structure, leakage current, ferroelectric and ferromagnetic properties of all the thin films were investigated. Rietveld refinement of X-ray diffraction data indicated that BFO phase in BFO-NFO and BSFO-NFO films is trigonal with different space group of R3c:H and R3m:R. The leakage current of BFO film shows Ohmic emission at the entire electric field, whereas the dominant mechanism is changed to Fowler-Nordheim tunneling emission at the high electric field in the BFO-NFO and BSFO-NFO films. The improved ferroelectric and ferromagnetic properties have been observed in the BSFO-NFO film, e.g., large remanent polarization is 66.18 μC/cm2 and large saturation magnetization is 31.86 emu/cm3.
AB - Pure BiFeO3 (BFO), BiFeO3-NiFe2O4 (BFO-NFO) and Sm-doped Bi0.89Sm0.11FeO3-NiFe2O4 (BSFO-NFO) thin films were prepared on FTO/glass (SnO2:F) substrates via a sol-gel method. The effects of NFO layer and Sm-doping on the crystalline structure, leakage current, ferroelectric and ferromagnetic properties of all the thin films were investigated. Rietveld refinement of X-ray diffraction data indicated that BFO phase in BFO-NFO and BSFO-NFO films is trigonal with different space group of R3c:H and R3m:R. The leakage current of BFO film shows Ohmic emission at the entire electric field, whereas the dominant mechanism is changed to Fowler-Nordheim tunneling emission at the high electric field in the BFO-NFO and BSFO-NFO films. The improved ferroelectric and ferromagnetic properties have been observed in the BSFO-NFO film, e.g., large remanent polarization is 66.18 μC/cm2 and large saturation magnetization is 31.86 emu/cm3.
KW - C. Ferroelectric properties
KW - C. Magnetic properties
KW - Conduction mechanism
KW - D. Ferrites
UR - https://www.scopus.com/pages/publications/84923059524
U2 - 10.1016/j.ceramint.2014.09.110
DO - 10.1016/j.ceramint.2014.09.110
M3 - 文章
AN - SCOPUS:84923059524
SN - 0272-8842
VL - 41
SP - 1687
EP - 1693
JO - Ceramics International
JF - Ceramics International
IS - 1
ER -