Magnetic anisotropy in single crystal high entropy perovskite oxide La(Cr0.2Mn0.2Fe0.2Co0.2Ni0.2)O3 films

Abstract

Local 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 ABO3 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 La(Cr0.2Mn0.2Fe0.2Co0.2Ni0.2)O3 (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.

References in corpus (10)

• Colossal Magnetoresistant Materials: The Key Role of Phase Separation
• Colossal dielectric constant in high entropy oxides
• Effect of chemical inhomogeneity in the bismuth-based copper oxide superconductors
• Quantifying octahedral rotations in strained perovskite oxide films
• High entropy oxides: An emerging prospect for magnetic rare earth - transition metal perovskites
• Disorder-Driven Non-Fermi Liquid Behavior of Correlated Electrons
• Long range antiferromagnetic order in a rocksalt high entropy oxide
• Single Crystal High Entropy Perovskite Oxide Epitaxial Films
• Non-Fermi-Liquid Scaling in Ce(Ru_{0.5}Rh_{0.5})_2Si_2
• Long-range magnetic ordering in rocksalt-type high-entropy oxides

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• Designer Magnetism in High Entropy Oxides
• High Entropy Oxide Relaxor Ferroelectrics
• Electronic structure and transport properties of sol-gel-derived high-entropy Ba(Zr0.2Sn0.2Ti0.2Hf0.2Nb0.2)O3 thin films
• High entropy ceramics for applications in extreme environments
• Disorder by Design: Unveiling Local Structure and Functional Insights in High Entropy Oxides
• Unexpected crystalline homogeneity from the disordered bond network in La(Cr0.2Mn0.2Fe0.2Co0.2Ni0.2)O3 films
• Embracing Disorder in Quantum Materials Design
• Hole doping in compositionally complex correlated oxide enables tunable exchange biasing
• Extreme disorder in crystalline perovskite oxide: a new paradigm in quantum materials research