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Large intrinsic magnetization in an epitaxial BiFeO3/NdGaO3system
- Source :
- EPL (Europhysics Letters). 126:57003
- Publication Year :
- 2019
- Publisher :
- IOP Publishing, 2019.
-
Abstract
- We report a comparative study of the crystal structure and magnetic properties between (001) oriented epitaxial BiFeO3 films grown on NdGaO3 and SrTiO3 substrates without any magnetic parasitic phase. The 15nm BiFeO3 film deposited on a NdCaO3 substrate shows substantially high magnetization (similar to 250 emu/cc) as compared to an identically thick BiFeO3 film (similar to 100 emu/cc) deposited on a SrTiO3 substrate. Detailed structural analysis revealed that the high magnetization is associated with a monoclinic (Cm) like distortion of the BiFeO3 crystal structure. We corroborated our experimental findings with first principles density functional theory calculations which suggested a saturation magnetization (266 emu/cc) close to the experimentally obtained one and a ferromagnetic ground state with the high spin moment in the Cm phase.
- Subjects :
- Materials science
Condensed matter physics
Physics
Materials Engineering (formerly Metallurgy)
General Physics and Astronomy
Substrate (electronics)
Crystal structure
Epitaxy
01 natural sciences
010305 fluids & plasmas
Magnetization
Ferromagnetism
Phase (matter)
0103 physical sciences
Centre for Nano Science and Engineering
010306 general physics
Ground state
Monoclinic crystal system
Subjects
Details
- ISSN :
- 12864854
- Volume :
- 126
- Database :
- OpenAIRE
- Journal :
- EPL (Europhysics Letters)
- Accession number :
- edsair.doi.dedup.....5dee298e133726b4bb3dbbf568d5432d