TY - JOUR
T1 - Structure and multiferroic properties of Sr substituted Bi 0.89-xSm0.11SrxFe0.94(Mn 0.04Cr0.02)O3 thin films
AU - Liu, Wenlong
AU - Tan, Guoqiang
AU - Xue, Xu
AU - Dong, Guohua
AU - Ren, Huijun
AU - Xia, Ao
PY - 2014/9
Y1 - 2014/9
N2 - Sr2+ substituted Bi0.89-xSm0.11Sr xFe0.94(Mn0.04Cr0.02)O3 (BSSrFMC, x=0.00 0.02, 0.04 and 0.06) thin films were prepared on FTO/glass (SnO2:F) substrates by using a sol-gel method. The effects of Sr 2+ substitution on the structure, leakage current, dielectric, ferroelectric and magnetic properties of BSSrFMC thin films have been investigated. X-ray diffraction (XRD), Rietveld refinement of XRD patterns and Raman spectroscopy results indicated two space groups (P4 and P422) to coexist in the tetragonal BSSrFMC thin film when x=0.04. Meanwhile, the lattice constant a was increased compared with that of the non-doped BSFMC thin film, which may result in an expanded unit cell. Highly enhanced multiferroic properties were observed in the BSSrFMC thin film with x=0.04, i.e., large remanent polarization (2Pr=173.43 μC/cm2), and large saturated magnetization (Ms=2.3 emu/cm3). Furthermore, a giant dielectric constant of 290 was observed in the BSSrxFMC (x=0.04) thin film at 1 kHz.
AB - Sr2+ substituted Bi0.89-xSm0.11Sr xFe0.94(Mn0.04Cr0.02)O3 (BSSrFMC, x=0.00 0.02, 0.04 and 0.06) thin films were prepared on FTO/glass (SnO2:F) substrates by using a sol-gel method. The effects of Sr 2+ substitution on the structure, leakage current, dielectric, ferroelectric and magnetic properties of BSSrFMC thin films have been investigated. X-ray diffraction (XRD), Rietveld refinement of XRD patterns and Raman spectroscopy results indicated two space groups (P4 and P422) to coexist in the tetragonal BSSrFMC thin film when x=0.04. Meanwhile, the lattice constant a was increased compared with that of the non-doped BSFMC thin film, which may result in an expanded unit cell. Highly enhanced multiferroic properties were observed in the BSSrFMC thin film with x=0.04, i.e., large remanent polarization (2Pr=173.43 μC/cm2), and large saturated magnetization (Ms=2.3 emu/cm3). Furthermore, a giant dielectric constant of 290 was observed in the BSSrxFMC (x=0.04) thin film at 1 kHz.
KW - A. Sol-gel processes
KW - C. Ferroelectric properties
KW - C. Magnetic properties
KW - D. Ferrites
UR - https://www.scopus.com/pages/publications/84903908520
U2 - 10.1016/j.ceramint.2014.05.032
DO - 10.1016/j.ceramint.2014.05.032
M3 - 文章
AN - SCOPUS:84903908520
SN - 0272-8842
VL - 40
SP - 13249
EP - 13256
JO - Ceramics International
JF - Ceramics International
IS - 8 PART B
ER -