Abstract
Erbium (Er) and lanthanum (La) substituted BiFeO3 (BFO) ceramics have been prepared through conventional solid solution route. X-ray diffraction data indicated a gradual phase transition from rhombohedral to monoclinic structure in Bi0·9−x La0·1Er x FeO3 (x = 0·05, 0·07 and 0·1) (BLEFO x = 0·05, 0·07, 0·1) ceramics. Differential thermal analysis (DTA) measurements of BFO samples showed a ferroelectric transition at 835°C, whereas it is shifted to 792°C for BLEFO x = 0·1. The Raman spectra of BLEFO x = 0·05, 0·07, 0·1 samples showed the shift of Raman modes to higher wavenumbers and suppression of A1 modes indicating decrease in ferroelectricity. The Raman spectra also indicated the structural transformation due to Er and La substitution in BFO. On subsequent erbium doping, the intrinsic dielectric constant is found to decrease from 68 (for pure BFO) to 52 for BLEFO x = 0·05 to 43 for BLEFO x = 0·07 but increased to 89 for BLEFO x = 0·1 when compared to pure BFO. The increase in Er content resulted in the increase in spontaneous magnetization (0·1178 emu/g at 8T for BLEFO x = 0·1) due to collapse of spin cycloid structure. Ferroelectric remnant polarization of BLEFO x = 0·05 and BLEFO x = 0·07 decreases when compared to pure BFO while small remnant polarization (close to paraelectric behaviour) is evident for BLEFO x = 0·1.
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References
Cheng X, Li A H, Wang X L, Dou S X, Ozawa K, Kimura H, Zhang S J and Shrout T R 2008 J. Appl. Phys. 103 07E507
Cheong S W and Mostovoy M 2007 Nat. Mater. 6 13
Chung C F, Lin J-P and Wu J-M 2006 Appl. Phys. Lett. 88 242909
Dho X, Qi J, Tomov R, Blamire M G and MacManus-Driscoll J L 2006 Appl. Phys. Lett. 86 062903
Ederer C and Spaldin N A 2005 Phys. Rev. B71 060401(R)
Eerenstein W, Morrison F D, Dho J, Blamire M G, Scott J F and Mathur N D 2005 Science 307 1203a
Eerenstein W, Mathur N D and Scott J F 2006 Nature 442 759
Fischer P, Polomskya M, Sosnowska I and Szymanksi M 1980 J. Phys. C13 1931
Fukumura H, Harima H, Kisoda K, Tamada M, Noguchi Y and Miyayama M 2007 J. Magn. Magn. Mater. 310 e367
Hill N A 2004 J. Phys. Chem. B104 6694
Jun Y K, Moon W T, Chang C M, Kim H S, Ryu H S, Kim J W, Kim K H and Hong S H 2005 Solid State Comm. 135 133
Kim T Y, Jang H M and Cho S M 2002 J. Appl. Phys. 91 336
Kumar M M, Srinivas V R K and Suryanarayan S V 2000 Appl. Phys. Lett. 76 2764
Lebeugle D, Colson D, Forget A, Viret M, Bataille A M and Gukasov A 2008 Phys. Rev. Lett. 100 227602
Lee S, Ratcliff W, Cheong S W and Kiryukhin V 2008 Appl. Phys. Lett. 92 192906
Lee Y H, Wu J M and Lai C H 2006 Appl. Phys. Lett. 88 042903
Neaton J B, Ederer C, Waghmare U V, Spaldin N A and Rabe K M 2005 Phys. Rev. B71 014113
Pandit P, Satapathy S, Gupta P K and Sathe V G 2009 J. Appl. Phys. 106 114105
Qi X, Dho J, Tomov R, Blamire M G and MacManus-Driscoll J L 2005 Appl. Phys. Lett. 86 062903
Ruette B, Zvyagin S, Pyatakov A P, Bush A, Li J F, Belotelov V I, Zvezdin A K and Viehland D 2004 Phys. Rev. B69 064114
Singh M K, Jang H M, Ryu S and Jo M H 2006 Appl. Phys. Lett. 88 042907
Singh S K, Ishiwara H and Maruyama K 2006 Appl. Phys. Lett. 88 262908
Sosnowska I, Lowenhaupt M, David W I F and Ibberson R M 1992 Physica B180 117
Wang Y P, Zhou L, Zhang M F, Chen X Y, Liu J -M and Liu Z G 2004 Appl. Phys. Lett. 84 1731
Yuan G L and Or S W 2006 J. Appl. Phys. 100 024109
Yuan G L, Or S W, Liu J M and Liu Z G 2006 Appl. Phys. Lett. 89 052905
Yuan G L, Or S W and Chan H L W 2007 J. Appl. Phys. 101 064101
Zhang S T, Lu M H, Wu D, Chen Y F and Ming N B 2005 Appl. Phys. Lett. 87 262907
Zhang S T, Zhang Y, Lu M H, Du C L, Chen Y F, Liu Z G, Zhu Y Y and Ming N B 2006 Appl. Phys. Lett. 88 162901
Zhang Y, Yu S and Cheng J 2010 J. Euro. Ceramic Soc. 30 271
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Pandit, P., Satapathy, S., Sharma, P. et al. Structural, dielectric and multiferroic properties of Er and La substituted BiFeO3 ceramics. Bull Mater Sci 34, 899 (2011). https://doi.org/10.1007/s12034-011-0212-3
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DOI: https://doi.org/10.1007/s12034-011-0212-3