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Proceedings Paper

Modulation of magnetic interaction in Bismuth ferrite through strain and spin cycloid engineering
Author(s): Rama Shanker Yadav; Hilal Ahmad Reshi; Shreeja Pillai; D. S. Rana; Vilas Shelke
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Paper Abstract

Bismuth ferrite, a widely studied room temperature multiferroic, provides new horizons of multifunctional behavior in phase transited bulk and thin film forms. Bismuth ferrite thin films were deposited on lattice mismatched LaAlO3 substrate using pulsed laser deposition technique. X-ray diffraction confirmed nearly tetragonal (T-type) phase of thin film involving role of substrate induced strain. The film thickness of 56 nm was determined by X-ray reflectivity measurement. The perfect coherence and epitaxial nature of T- type film was observed through reciprocal space mapping. The room temperature Raman measurement of T-type bismuth ferrite thin film also verified phase transition with appearance of only few modes. In parallel, concomitant La and Al substituted Bi1-xLaxFe0.95Al0.05O3 (x = 0.1, 0.2, 0.3) bulk samples were synthesized using solid state reaction method. A structural phase transition into orthorhombic (Pnma) phase at x = 0.3 was observed. The structural distortion at x = 0.1, 0.2 and phase transition at x = 0.3 substituted samples were also confirmed by changes in Raman active modes. The remnant magnetization moment of 0.199 emu/gm and 0.28 emu/gm were observed for x = 0.2 and 0.3 bulk sample respectively. The T-type bismuth ferrite thin film also showed high remnant magnetization of around 20emu/cc. The parallelism in magnetic behavior between T-type thin film and concomitant La and Al substituted bulk samples is indication of modulation, frustration and break in continuity of spiral spin cycloid.

Paper Details

Date Published: 30 December 2016
PDF: 13 pages
Proc. SPIE 10224, International Conference on Micro- and Nano-Electronics 2016, 102240A (30 December 2016); doi: 10.1117/12.2267059
Show Author Affiliations
Rama Shanker Yadav, Barkatullah Univ. (India)
Hilal Ahmad Reshi, Barkatullah Univ. (India)
Shreeja Pillai, Barkatullah Univ. (India)
D. S. Rana, Indian Institute of Science Education and Research (India)
Vilas Shelke, Barkatullah Univ. (India)

Published in SPIE Proceedings Vol. 10224:
International Conference on Micro- and Nano-Electronics 2016
Vladimir F. Lukichev; Konstantin V. Rudenko, Editor(s)

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