Modifications in the electronic structure of Rare-Earth doped BiFeO3 multiferroic

Autor:	K. H. Chae, Malay Udeshi, K. Asokan, Sanjeev Gautam, D. G. Kuberkar, Savan Katba, Brinda Vyas, Megha Vagadia, Sadaf Jethva, Priyanka Trivedi
Rok vydání:	2015
Předmět:	Materials science Valence (chemistry) Rare earth Doping Mineralogy General Chemistry Electronic structure Condensed Matter Physics Spectral line Solid state reaction method Crystallography Materials Chemistry Multiferroics Crystallite
Zdroj:	Solid State Communications. 222:5-8
ISSN:	0038-1098
DOI:	10.1016/j.ssc.2015.08.016
Popis:	We report the modifications in the electronic structure of Rare Earth (RE) doped polycrystalline BiFeO 3 (Bi 0.9 RE 0.1 FeO 3 (RE= La, Pr, and Er)) synthesized using conventional solid state reaction method. Structural studies using XRD shows that all the samples possess rhombohedral symmetry. As compared to Er and Pr-doped BiFeO 3 , La-doping results in the improvement in P–E behavior. X-ray absorption studies at Fe L-edge shows the presence of mixed valence state of Fe ions in all the samples. Interestingly, O K-edge spectra of La-doped BiFeO 3 shows enhancement in the intensity of the feature ‘b’ assigned to the hybridization of Bi 6s and O 2p orbital.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a9fa8b90a46e6104291340d04b3fe1b8 https://doi.org/10.1016/j.ssc.2015.08.016 Zobrazit plný text záznamu Full Text from ScienceDirect