TY - JOUR
T1 - Effects of Nd and high-valence Mn co-doping on the electrical and magnetic properties of multiferroic BiFeO3 ceramics
AU - Hu, Zhongqiang
AU - Li, Meiya
AU - Yu, Yang
AU - Liu, Jun
AU - Pei, Ling
AU - Wang, Jing
AU - Liu, Xiaolian
AU - Yu, Benfang
AU - Zhao, Xingzhong
PY - 2010/6
Y1 - 2010/6
N2 - Pure BiFeO3 (BFO), 15% Nd doped BFO (BNF), and 15% Nd and 2% high-valence Mn co-doped BFO (BNFM) multiferroic ceramics were prepared by a rapid liquid phase sintering technique. A structural transition from rhombohedral R 3 c to orthorhombic P 4 m m occurred in the BNF and BNFM ceramics. The co-doped BNFM ceramics exhibit the largest dielectric constant, the smallest dielectric loss and leakage current, and an improved rectangular-shaped polarization hysteresis loop with a remnant polarization as high as 31 μC/cm2, which could be attributed to the lower concentration of charge defects and the structural transition. Besides, enhanced ferromagnetism is confirmed in BNFM with a remnant magnetization of 0.075 emu/g and a coercive magnetic field of 5.8 kOe, which might be attributed to the effective suppression of the spatially modulated spin structure by the Nd and Mn co-doping.
AB - Pure BiFeO3 (BFO), 15% Nd doped BFO (BNF), and 15% Nd and 2% high-valence Mn co-doped BFO (BNFM) multiferroic ceramics were prepared by a rapid liquid phase sintering technique. A structural transition from rhombohedral R 3 c to orthorhombic P 4 m m occurred in the BNF and BNFM ceramics. The co-doped BNFM ceramics exhibit the largest dielectric constant, the smallest dielectric loss and leakage current, and an improved rectangular-shaped polarization hysteresis loop with a remnant polarization as high as 31 μC/cm2, which could be attributed to the lower concentration of charge defects and the structural transition. Besides, enhanced ferromagnetism is confirmed in BNFM with a remnant magnetization of 0.075 emu/g and a coercive magnetic field of 5.8 kOe, which might be attributed to the effective suppression of the spatially modulated spin structure by the Nd and Mn co-doping.
KW - A. Ceramics
KW - A. Multiferroics
KW - D. Electrical and magnetic properties
UR - https://www.scopus.com/pages/publications/77951105990
U2 - 10.1016/j.ssc.2010.03.015
DO - 10.1016/j.ssc.2010.03.015
M3 - 文章
AN - SCOPUS:77951105990
SN - 0038-1098
VL - 150
SP - 1088
EP - 1091
JO - Solid State Communications
JF - Solid State Communications
IS - 23-24
ER -