Effect of Gd-substitution on phase transition and conduction mechanism of BiFeO3
作者： Samita Pattanayak , R. N. P. Choudhary , Piyush R. Das
DOI: 10.1007/S10854-013-1168-4
关键词:
摘要: The polycrystalline sample of (Bi0.8Gd0.2)FeO3 was prepared by a high-temperature solid-state reaction technique. Preliminary X-ray structural analysis the confirms formation desired compound with rhombohedral phase. scanning electron micrograph showed uniform distribution plate- and rod-shaped grains. Studies dielectric electrical properties material were investigated within wide range temperature (25–400 °C) frequency (1 kHz–1 MHz) using complex impedance spectroscopic method. observation hysteresis loop confirmed that has ferroelectric property at room temperature. ac conductivity suggests obey Jonscher’s universal power law. dc follows Arrhenius equation. Detailed studies show negative coefficient resistance (NTCR) behavior sample.
springer.com
sci-hub.se 参考文章(23)
J ROSSMACDONALD, Note on the parameterization of the constant-phase admittance element Solid State Ionics. ,vol. 13, pp. 147- 149 ,(1984) , 10.1016/0167-2738(84)90049-3
A. K. Jonscher, The ‘universal’ dielectric response Nature. ,vol. 267, pp. 673- 679 ,(1977) , 10.1038/267673A0
B K Barick, K K Mishra, A K Arora, R N P Choudhary, Dillip K Pradhan, Impedance and Raman spectroscopic studies of (Na0.5Bi0.5)TiO3 Journal of Physics D. ,vol. 44, pp. 355402- ,(2011) , 10.1088/0022-3727/44/35/355402
Yan Ma, Xiang Ming Chen, Enhanced multiferroic characteristics in NaNbO3-modified BiFeO3 ceramics Journal of Applied Physics. ,vol. 105, pp. 054107- ,(2009) , 10.1063/1.3081648
A. Lahmar, S. Habouti, M. Dietze, C.-H. Solterbeck, M. Es-Souni, Effects of rare earth manganites on structural, ferroelectric, and magnetic properties of BiFeO3 thin films Applied Physics Letters. ,vol. 94, pp. 012903- ,(2009) , 10.1063/1.3064954
M. Vopsaroiu, M.G. Cain, G. Sreenivasulu, G. Srinivasan, A.M. Balbashov, Multiferroic composite for combined detection of static and alternating magnetic fields Materials Letters. ,vol. 66, pp. 282- 284 ,(2012) , 10.1016/J.MATLET.2011.08.094
JianMei Xu, GeMing Wang, HuiXiao Wang, DeFang Ding, Yuan He, Synthesis and weak ferromagnetism of Dy-doped BiFeO3 powders Materials Letters. ,vol. 63, pp. 855- 857 ,(2009) , 10.1016/J.MATLET.2009.01.036
R. N. P. Choudhary, Dillip K. Pradhan, C. M. Tirado, G. E. Bonilla, R. S. Katiyar, Effect of La substitution on structural and electrical properties of Ba(Fe2/3W1/3)O3 nanoceramics Journal of Materials Science. ,vol. 42, pp. 7423- 7432 ,(2007) , 10.1007/S10853-007-1835-Z
Gustau Catalan, James F. Scott, Physics and Applications of Bismuth Ferrite Advanced Materials. ,vol. 21, pp. 2463- 2485 ,(2009) , 10.1002/ADMA.200802849
K. Jawahar, Banarji Behera, R. N. P. Choudhary, Dielectric and impedance properties of Nd3/2Bi3/2Fe5O12 ceramics Journal of Materials Science: Materials in Electronics. ,vol. 20, pp. 872- 878 ,(2009) , 10.1007/S10854-008-9809-8