9 papers
Reconstruction-Dependent Imaging, Reactivity and Local Reduction of the CeO(100) surface
Kyungmin Kim, Manuel González Lastre, Manuel González Lastre +10
The possibility of mapping the local reactivity and reduction state to the atomic structure of chemically active oxide surfaces opens new avenues for further understanding of catal…
Trans-scale spin Seebeck effect in nanostructured bulk composites based on magnetic insulator
Sang J. Park, Keisuke Hirata, Hossein Sepehri-Amin +3
The spin Seebeck effect (SSE) enables thermoelectric conversion through thermally generated spin currents in magnetic materials, offering a promising transverse geometry for scalab…
Structural heterogeneity-induced enhancement of transverse magneto-thermoelectric conversion revealed by thermoelectric imaging in functionally graded materials
Sang J. Park, Ravi Gautam, Takashi Yagi +3
Functionally graded materials (FGMs) exhibit continuous property variations that enable unique functionalities and provide efficient platforms for systematic property optimization.…
Simultaneous achievement of large anomalous Nernst effect and reduced thermal conductivity in sintered polycrystalline topological Heusler ferromagnets
Koichi Oyanagi, Hossein Sepehri-Amin, Kenta Takamori +9
This study reports the observation of the large anomalous Nernst effect in polycrystalline ferromagnetic CoMnGa (CMG) slabs prepared by a spark plasma sintering method. By op…
Near-surface Defects Break Symmetry in Water Adsorption on CeO(111)
Oscar Custance, Manuel González Lastre, Kyungmin Kim +7
Water interactions with oxygen-deficient cerium dioxide (CeO) surfaces are central to hydrogen production and catalytic redox reactions, but the atomic-scale details of how def…
High-throughput development of flexible amorphous materials showing large anomalous Nernst effect via automatic annealing and thermoelectric imaging
Sang J. Park, Ravi Gautam, Abdulkareem Alasli +5
This work demonstrates high-throughput screening of flexible magnetic materials for efficient transverse thermoelectric conversion based on the anomalous Nernst effect (ANE). The a…