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.com
Volume 6
Research & Reviews: Journal of Material Sciences
ISSN: 2321-6212
Magnetic Materials 2018
October 22-23, 2018
October 22-23, 2018 | Rome, Italy
3
rd
International Conference on
Magnetism and Magnetic Materials
Enhanced magnetization in the BiFeO
3
-RMnO
3
thin films
Lahmar Abdelilah
University of Picardie Jules Verne, France
T
hemonolithic BiFeO
3
(BFO) is claimed to bemultiferroic at room temperature, but only a weakmagnetization andmoderate
polarization are observed. The co-doping of BFO is a way to improve electrical properties as well as magnetization. Thin
films of the BiFeO
3
-RMnO
3
(R = rare earth) system affords an interesting combination of good ferroelectric polarization and
magnetization properties at room temperature that are a prerequisite for intrinsic multiferroism. Particularly, the addition of
GdMnO
3
leads to a substantial increase in magnetization that experimentally allows the determination of Néel temperature
(TN). The origin of magnetization improvement will be discussed in terms of Gd substitution effects on octahedral distortion
and tilting.
Figure: (a)
Simultaneous presence of ferroelectric and magnetic properties in GdMBFO. (b) Simple representation of how motion of oxygen cages would lead to
rotation of octahedra and increase in the octahedral angle from α angle for pure BFO to β angle for GdMBFO.
Recent Publications
1. Lahmar A (2017) Multiferroic properties and frequency dependent coercive field in BiFeO
3
-LaMn
0.5
Co
0.5
O
3
thin films.
Journal of Magnetism and Magnetic Materials 439:30–37.
2. Lahmar A and Es Souni M (2015) Sequence of structural transitions in BiFeO
3
-RMnO
3
thin films (R= rare earth),
Ceramics International 41(4):5721–5726.
3. Lahmar A, et al. (2009) Effect of rare earth manganites on structural, ferroelectric and magnetic properties of BiFeO
3
.
Applied Physics Letters 94(1):012903.
Biography
Lahmar Abdelilah received his Doctorate in Science in Materials Chemistry in 2007 from University of La Rochelle (France)/University Mohammed V (Morocco).
Subsequently he worked at the Institute for Materials and Surface Technology (IMST) in Kiel (Germany) until 2012. Then he moved toAmiens, in Laboratory of Condensed
Matter Physics, where he obtained his Habilitation thesis in 2017. His research interests encompass a broad range of multifunctional materials (multiferroic, electrocaloric,
and magnetoelectrics). He has published more than 50 papers published in peer reviewed journals and contributed to numerous international conferences.
abdel.ilah.lahmar@u-picardie.frLahmar Abdelilah, Res. Rev. J Mat. Sci. 2018, Volume 6
DOI: 10.4172/2321-6212-C6-029