A5100343061- Magnetic and transport properties of perovskites and related materials
- Advanced Condensed Matter Physics
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Physics of Superconductivity and Magnetism
- Supercapacitor Materials and Fabrication
- Advanced battery technologies research
- Solid State Laser Technologies
- Crystal Structures and Properties
- Advancements in Battery Materials
- Photorefractive and Nonlinear Optics
- Multiferroics and related materials
- Luminescence Properties of Advanced Materials
- Glass properties and applications
- Electronic and Structural Properties of Oxides
- Magnetic Properties and Applications
- Rare-earth and actinide compounds
- Iron-based superconductors research
- Non-Destructive Testing Techniques
- Solid-state spectroscopy and crystallography
- Electrocatalysts for Energy Conversion
- Laser Design and Applications
- Advanced Battery Materials and Technologies
- Metamaterials and Metasurfaces Applications
- Graphene research and applications
Shandong University
2012-2025
State Key Laboratory of Crystal Materials
2012-2025
Crystal Research (United States)
2025
Institute of New Materials
2023-2024
Argonne National Laboratory
2015-2024
Yili Normal University
2024
Changji University
2024
Hefei University
2024
Beihang University
2024
Shenyang University of Technology
2024
We report for the first time magnetic structure of high entropy oxide $(Mg_{0.2}Co_{0.2}Ni_{0.2}Cu_{0.2}Zn_{0.2})O$ using neutron powder diffraction. This material exhibits a sluggish transition but possesses long-range ordered antiferromagnetic ground state, as revealed by DC and AC susceptibility, elastic inelastic scattering measurements. The propagation wavevector is k=(1/2, 1/2, 1/2) based on cubic Fm-3m, consists ferromagnetic sheets in (111) planes with spins antiparallel between two...
We report the discovery of a novel form Ruddlesden–Popper (RP) nickelate that stands as first example long-range, coherent polymorphism in this class inorganic solids. Rather than well-known, uniform stacking perovskite blocks ubiquitously found RP phases, newly discovered polymorph bilayer phase La3Ni2O7 adopts sequence which single-layer and trilayer NiO6 octahedra alternate "1313" sequence. Crystals new are described space group Cmmm, although we note evidence for competing Imam variant....
A new polar polymorph of BaTeMo2O9, α-BaTeMo2O9, has been synthesized by spontaneous crystallization with molten flux based on the TeO2–MoO3 solvent. The two polymorphous phases BaTeMo2O9 are referred to as β- and α-BaTeMo2O9 according their temperature from high low. structure contains two-dimensional (Te2Mo4O18)4– anionic layers interleaved Ba2+ cations. Each layer is composed Mo4O20 tetramers connected TeOx (x = 3, 4) polyhedra. Mo6+ Te4+ in asymmetric coordination environments...
An ordinary Hall effect in a conductor arises due to the Lorentz force acting on charge carriers. In ferromagnets, an additional contribution effect, anomalous (AHE), appears proportional magnetization. While AHE is not seen collinear antiferromagnet, with zero net magnetization, recently it has been shown that intrinsic can be non-zero non-collinear antiferromagnets as well topological materials hosting Weyl nodes near Fermi energy. Here we report large conductivity of 27 Ω-1 cm-1...
The quasi-two-dimensional nickelate La4Ni3O8 (La-438) is an anion deficient n=3 Ruddlesden-Popper (R-P) phase that consists of trilayer networks square planar Ni ions, formally assigned as Ni1+ and Ni2+ in a 2:1 ratio. While previous studies on polycrystalline samples have identified 105 K transition with pronounced electronic magnetic response but weak lattice character, no consensus the origin this has been reached. Here we show using synchrotron x-ray diffraction high-pO2 floating-zone...
Abstract In recent years, cobalt has become a critical constraint on the supply chain of Li‐ion battery industry. With ever‐increasing projections for electric vehicles, dependency current batteries ever‐fluctuating prices poses serious environmental and sustainability issues. To address these challenges, new class cobalt‐free materials with general formula LiNi x Fe y Al z O 2 ( + = 1), termed as lithium iron aluminum nickelate (NFA) cathodes, is introduced. These are synthesized using...
The discovery of superconductivity in a $d^{9-{\delta}}$ nickelate has inspired disparate theoretical perspectives regarding the essential physics this class materials. A key issue is magnitude magnetic superexchange, which relates to whether cuprate-like high-temperature could be realized. We address question using Ni L-edge and O K-edge spectroscopy reduced trilayer $d^{9-1/3}$ La4Ni3O8 associated modeling. magnon energy scale ~80 meV resulting from nearest-neighbor exchange $J = 69(4)4$...
Advancement of technologies relies on discovery new materials with emerging physical properties that are determined by their crystal structures.2][3][4][5][6] In R-P phases, intergrowth is well-known in the short range; 7-9 however, no existing compounds have been reported to different n mixed bulk single crystals.Here we design a hybrid nickelate La2NiO4•La3Ni2O7 alternatively stacking bilayers, which active structural motif newly high-Tc superconductor La3Ni2O7 and layers antiferromagnetic...
A noncentrosymmetric (NCS) compound, MgTeMoO6, has been synthesized using the high temperature solution method with TeO2–MoO3 mixture as a flux. MgTeMoO6 crystalizes in orthorhombic space group P21212 (No. 18) cell parameters = 5.03780(10) Å, b 5.26910(10) c 8.8985(2) and Z 2. The compound exhibits novel neutral layered structure consisting of asymmetric MgO6 octahedra, TeO4 polyhedra MoO4 tetrahedra. Thermal stability measurements revealed an incongruent melting point 682.35 °C. crystal...
Bulk single crystals of α-BaTeMo2O9 with dimensions up to 51 × 30 20 mm3 were grown successfully by a top-seeded solution growth (TSSG) method using TeO2-MoO3 mixture as flux. High-resolution X-ray diffraction measurement on the (400)-faced plate indicates that full-width at half-maximum (FWHM) rocking curve is 16.55′′. The as-grown crystal exhibits {010}, {002}, {110}, {111} and {201} facets, which are in good accordance predicted morphology based upon Bravais-Friedel Donnay-Harker (BFDH)...
Layered nickelates have the potential for exotic physics similar to high T C superconducting cuprates as they crystal structures and these transition metals are neighbors in periodic table. Here we present an angle-resolved photoemission spectroscopy (ARPES) study of trilayer nickelate La4Ni3O10 revealing its electronic structure correlations, finding strong resemblances well a few key differences. We find large hole Fermi surface that closely resembles optimally hole-doped cuprates,...
Nickelates are a rich class of materials, ranging from insulating magnets to superconductors. But for stoichiometric behavior is the norm, as most late transition metal oxides. Notable exceptions 3D perovskite LaNiO3, an unconventional paramagnetic metal, and layered Ruddlesden-Popper phases R4Ni3O10, (R = La, Pr, Nd). The latter particularly intriguing because they exhibit unusual metal-to-metal transition. Here, we demonstrate that this results incommensurate density wave with both charge...
We report the first single crystal growth of correlated metal LaNiO3 using a high-pressure optical-image floating zone furnace. The crystals were studied crystal/powder X-ray diffraction, resistivity, specific heat, and magnetic susceptibility. availability bulk will (i) promote deep understanding in this material, including mechanism enhanced paramagnetic susceptibility, (ii) provide rich opportunities as substrate for thin film such important ferroelectric and/or multiferroic materials....
Abstract 1,4‐Dimethoxybenzene derivatives are materials of choice for use as catholytes in non‐aqueous redox flow batteries, they exhibit high open‐circuit potentials and excellent electrochemical reversibility. However, chemical stability these their oxidized form needs to be improved. Disubstitution the arene ring is used suppress parasitic reactions radical cations, but this does not fully prevent ring‐addition reactions. By incorporating bicyclic substitutions ether chains into...
Trilayer nickelates, which exhibit a high degree of orbital polarization combined with an electron count (${d}^{8.67}$) corresponding to overdoped cuprates, have been identified as promising candidate platform for achieving high-${T}_{c}$ superconductivity. One such material, ${\mathrm{La}}_{4}{\mathrm{Ni}}_{3}{\mathrm{O}}_{8}$, undergoes semiconductor-insulator transition at $\ensuremath{\sim}105\text{ }\text{ }\mathrm{K}$, was recently shown arise from the formation charge stripes....
Single crystals of the metallic Ruddlesden-Popper trilayer nickelates ${R}_{4}{\mathrm{Ni}}_{3}{\mathrm{O}}_{10}$ ($R=\mathrm{La},\mathrm{Pr}$) were successfully grown using an optical-image floating zone furnace under oxygen pressure $(p{\mathrm{O}}_{2})$ 20 bar for ${\mathrm{La}}_{4}{\mathrm{Ni}}_{3}{\mathrm{O}}_{10}$ and 140 ${\mathrm{Pr}}_{4}{\mathrm{Ni}}_{3}{\mathrm{O}}_{10}$. A combination synchrotron laboratory x-ray single-crystal diffraction, high-resolution powder diffraction...
Abstract Zinc‐ion hybrid capacitors (ZHC) have been considered as emerging sustainable electrochemical energy storage devices. They integrate the benefits of high‐energy density aqueous zinc ion battery (ZIB) with high‐power supercapacitor (SC). Metal‐organic frameworks (MOFs) widely used to design electrode materials for portable devices, especially in some fields because their large specific surface area and adjustable pore structures. In this work, we prepare porous Mn 3 O 4 /C nanosheets...
Single crystals of the polar hexagonal tungsten oxide (HTO) material Cs2TeMo3O12 with dimensions up to 20 × 16 mm3 were grown successfully through a top-seeded solution growth (TSSG) method using TeO2−MoO3 mixture as self-flux. The from low concentration exhibit {0002}, {101̅0}, and {101̅1̅} facets, which are in good accordance predicted morphology based upon Bravais−Friedel Donnay−Harker (BFDH) methods. However, high show additional {101̅2̅} not predicted. Crystals by [0001]-oriented seed...
Development of a strong Lewis acid-free and phenolate-based electrolyte for rechargeable magnesium-ion batteries.
Spinel NiMn<sub>2</sub>O<sub>4</sub> microspheres self-assembled with nanosheets directly grown on a 3D nickel foam were successfully prepared by facile microwave-assisted hydrothermal process.