Correlation of structure and spin–phonon coupling in (La,Nd) doped BiFeO3 films |
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Authors: | Anju Ahlawat S Satapathy Satish Maan V G Sathe P K Gupta |
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Abstract: | We studied the effect of structural change on the spin–phonon coupling in doped BiFeO3 (BFO) films (Bi0.8La0.1Nd0.1FeO3) grown on SrTiO3 (001) substrate. The temperature‐dependent Raman studies show phonon anomalies in the vicinity of magnetic ordering temperature TN owing to the spin–phonon coupling. Doped films exhibit strong anomalies in the line widths of Raman bands around TN revealing the presence of strong spin–lattice coupling. The modification in structure as a result of A‐site doping in BFO films plays an important role in controlling the nature of spin–phonon coupling. Copyright © 2014 John Wiley & Sons, Ltd. |
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Keywords: | BiFeO3 thin films Raman spectra phonon multiferroics |
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