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Magnetic anisotropy in single-crystal high-entropy perovskite oxide La(Cr0.2Mn0.2Fe0.2Co0.2Ni0.2)O3 films
- Source :
- Physical Review Materials. 4
- Publication Year :
- 2020
- Publisher :
- American Physical Society (APS), 2020.
-
Abstract
- Configurational disorder can have a dominating role in the formation of macroscopic functional responses in strongly correlated materials. Here, we use entropy-stabilization synthesis to create single-crystal epitaxial $\mathrm{AB}{\mathrm{O}}_{3}$ perovskite thin films with equal atomic concentration of 3d transition-metal cations on the B-site sublattice. X-ray diffraction, atomic force microscopy, and scanning transmission electron microscopy of $\mathrm{La}(\mathrm{C}{\mathrm{r}}_{0.2}\mathrm{M}{\mathrm{n}}_{0.2}\mathrm{F}{\mathrm{e}}_{0.2}\mathrm{C}{\mathrm{o}}_{0.2}\mathrm{N}{\mathrm{i}}_{0.2}){\mathrm{O}}_{3}$ (L5BO) films demonstrate excellent crystallinity, smooth film surfaces, and uniform mixing of the 3d transition-metal cations throughout the B-site sublattice. The magnetic properties are strongly dependent on substrate-induced lattice anisotropy and suggest the presence of long-range magnetic order in these exceptionally disordered materials. The ability to populate multiple elements onto a single sublattice in complex crystal structures opens new possibilities to design functionality in correlated systems and enable novel fundamental studies seeking to understand how diverse local bonding environments can work to generate macroscopic responses, such as those driven by electron-phonon channels and complex exchange interaction pathways.
- Subjects :
- Materials science
Physics and Astronomy (miscellaneous)
Exchange interaction
Lattice (group)
02 engineering and technology
Crystal structure
021001 nanoscience & nanotechnology
01 natural sciences
Condensed Matter::Materials Science
Crystallography
Magnetic anisotropy
0103 physical sciences
General Materials Science
Strongly correlated material
010306 general physics
0210 nano-technology
Anisotropy
Single crystal
Perovskite (structure)
Subjects
Details
- ISSN :
- 24759953
- Volume :
- 4
- Database :
- OpenAIRE
- Journal :
- Physical Review Materials
- Accession number :
- edsair.doi...........2a7d1155856cca3d4ca5c7c0c19cb49a
- Full Text :
- https://doi.org/10.1103/physrevmaterials.4.014404