Premium
Modification in structure of La and Nd co‐doped epitaxial BiFeO 3 thin films probed by micro Raman spectroscopy
Author(s) -
Ahlawat Anju,
Satapathy S.,
Sathe V. G.,
Choudhary R. J.,
Singh M. K.,
Kumar Ravi,
Sharma T. K.,
Gupta P. K.
Publication year - 2015
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.4701
Subject(s) - raman spectroscopy , materials science , coercivity , thin film , doping , monoclinic crystal system , multiferroics , ferromagnetism , hysteresis , epitaxy , magnetization , condensed matter physics , analytical chemistry (journal) , crystal structure , nuclear magnetic resonance , nanotechnology , ferroelectricity , crystallography , optoelectronics , magnetic field , chemistry , optics , dielectric , physics , layer (electronics) , quantum mechanics , chromatography
The influence of La and Nd co‐substitution on structure, electric and magnetic properties of epitaxial thin films of BiFeO 3 (BFO) was examined. We demonstrate structural phase transition in co‐doped La and Nd BFO thin films using Raman spectroscopy. Based on group theoretical analysis of the number and symmetry of Raman lines, we provide strong experimental evidence that the structure has been changed from rhombohedral to monoclinic due to co‐doping in BFO. The change in structure was also reflected in morphology of these films. Room temperature magnetic hysteresis curves showed that doped films exhibit enhanced ferromagnetic properties with remnant magnetization of ~10 emu/cm 3 and coercive field of 1.2 kOe. The enhanced magnetic properties highlight the potential applications of doped BLNFO thin film for smart devices. Copyright © 2015 John Wiley & Sons, Ltd.