Single Crystal High Entropy Perovskite Oxide Epitaxial Films

Abstract

The first examples of single crystal epitaxial thin films of a high entropy perovskite oxide are synthesized. Pulsed laser deposition is used to grow the configurationally disordered ABO3 perovskite, Ba(Zr0.2Sn0.2Ti0.2Hf0.2Nb0.2)O3, epitaxially on SrTiO3 and MgO substrates. X-ray diffraction and scanning transmission electron microscopy demonstrate that the films are single phase with excellent crystallinity and atomically abrupt interfaces to the underlying substrates. Atomically-resolved electron energy loss spectroscopy mapping shows a uniform and random distribution of all B-site cations. The ability to stabilize perovskites with this level of configurational disorder offers new possibilities for designing materials from a much broader combinatorial cation pallet while providing a fresh avenue for fundamental studies in strongly correlated quantum materials where local disorder can play a critical role in determining macroscopic properties.

References in corpus (10)

• Colossal Magnetoresistant Materials: The Key Role of Phase Separation
• Structural, magnetic and electrical properties of single crystalline La_(1-x)Sr_xMnO_3 for 0.4 < x < 0.85
• A ferroelectric quantum phase transition inside the superconducting dome of Sr${}_{1-x}$Ca${}_x$TiO${}_{3-\delta }$
• Strain Doping: Reversible Single-Axis Control of a Complex Oxide Lattice via Helium Implantation
• Experimental metrology to obtain thermal phonon transmission coefficients at solid interfaces
• Multiferroic crossover in perovskite oxides
• Thin Film Substrates from the Raman spectroscopy point of view
• Soft Modes and Local Structural Transitions in Pb-free Ba(Ti0.8Zr0.2)O3-x(Ba0.7Ca0.3)TiO3 (x = 0.5): Pressure- and Temperature-dependent Raman Studies
• A Tetrahedron-tiling Method for Crystal Structure Prediction
• Topological Crystalline Metal in Orthorhombic Perovskite Iridates

Cited by in corpus (20)

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• What is in a Name: Defining -High Entropy- Oxides
• Magnetic properties of rare earth and transition metal based perovskite type high entropy oxides
• Designer Magnetism in High Entropy Oxides
• Epitaxial stabilization of ultra thin films of high entropy perovskite
• High Entropy Oxide Relaxor Ferroelectrics
• Magnetic anisotropy in single crystal high entropy perovskite oxide La(Cr0.2Mn0.2Fe0.2Co0.2Ni0.2)O3 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
• Applying configurational complexity to the 2D Ruddlesden-Popper crystal structure
• Embracing Disorder in Quantum Materials Design
• Hole doping in compositionally complex correlated oxide enables tunable exchange biasing
• Oxygen Defect Engineered Magnetism of La2NiMnO6 Thin Films
• Simulating Spin Waves in Entropy Stabilized Oxides
• More is different: How chemical complexity influences stability in high entropy oxides
• Searching for Superconductivity in High Entropy Oxide Ruddlesden-Popper Cuprate Films