RENiO3 single crystals (RE = Nd, Sm, Gd, Dy, Y, Ho, Er, Lu) grown from molten salts under 2000 bar oxygen-gas pressure

Abstract

The electronic properties of transition-metal oxides with highly correlated electrons are of central importance in modern condensed matter physics and chemistry, both for their fundamental scientific interest, and for their potential for advanced electronic applications. The design of materials with tailored properties has been, however, restricted by the limited understanding of their structure-property relationships, which are particularly complex in the proximity of the regime where localized electrons become gradually mobile. RENiO3 perovskites, characterized by the presence of spontaneous metal to insulator transitions, are one of the most widely used model materials for the investigation of this region in theoretical studies. However, crucial experimental information needed to validate theoretical predictions is still lacking due to their challenging high-pressure synthesis, which has prevented to date the growth of sizable bulk single crystals with RE different than La, Pr and Nd. Here we report the first successful growth of single crystals with RE = Nd, Sm, Gd, Dy, Y, Ho, Er and Lu and sizes up to ~75 μm, grown from molten salts in temperature gradient under 2000 bar oxygen gas pressure. The crystals display regular prismatic shapes with flat facets, and their crystal structures, metal-insulator and antiferromagnetic order transition temperatures are in excellent agreement with previously reported values obtained from polycrystalline samples. The availability of such crystals opens access to measurements that have hitherto been impossible to conduct. This should contribute to a better understanding of the fascinating properties of materials with highly correlated electrons, and guide future efforts to engineer transition metal oxides with tailored functional properties.

12 pages, 8 figures, accepted by Crystal Growth & Design. The SI is available at https://pubs.acs.org/doi/10.1021/acs.cgd.1c00474

References in corpus (5)

• Low-energy description of the metal-insulator transition in the rare-earth nickelates
• Tuning the metal-insulator transition in NdNiO3 heterostructures via Fermi surface instability and spin-fluctuations
• High pO2 Floating Zone Crystal Growth of the Perovskite Nickelate PrNiO3
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• A laser-ARPES study of LaNiO3 thin films grown by sputter deposition

Cited by in corpus (10)

• Topotactic transformation of single-crystals: from perovskite to infinite-layer nickelates
• Design and synthesis of three-dimensional hybrid Ruddlesden-Popper nickelate single crystals
• Synthesis of thin film infinite-layer nickelates by atomic hydrogen reduction: clarifying the role of the capping layer
• Phase formation in hole- and electron-doped rare-earth nickelate single crystals
• Influence of the Magnetic Sub-Lattices in the Double Perovskite Compound LaCaNiReO${}_6$
• PERSPECTIVE: Emergent phases in rare earth nickelate heterostructures
• Simple microscopic model for magneto-electric coupling in type-II antiferromagnetic multiferroics
• Insulator-bad metal transition in RNiO${}_3$ nickelates beyond Hubbard model and density functional theory
• Magnetostructural Coupling at the Néel point in YNiO3 Single Crystals
• $L{a}_{3}P{d}_{2}Na{O}_9$: A High-Valent Insulating Palladate