Min‐Chul Kang

Robust Antiferroelectric Response in the Pbca Phase of Hafnium Zirconium Oxide via Aluminum Substitution

Yong Kyu Choi, Min‐Chul Kang, Tinsae Alem, Nicolas K. Lam et autres

ABSTRACT Hafnium zirconium oxide (HZO) has attracted attention for applications in nonvolatile memory and energy harvesting devices. However, it faces practical challenges such as insufficient endurance. One promising strategy to address this limitation is the utilization of antiferroelectric (AFE) behavior in HZO‐based …

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Effect of thermomechanical processing on mechanical properties and the microstructure of ternary Al-Ce-Mg alloy

Gaurav Kumar Singh, Humphrey Wara Odhiambo, Mohamad Hasan Bin Tasneem, Gaoyuan Ouyang et autres

Al-Ce alloys are known to retain a large fraction of their room temperature properties at elevated temperatures and after exposure to temperature for extended periods. Here we work with the ternary close-to-eutectic alloy Al-10Ce-4Mg and explore the effect of extrusion on its …

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Direct Observation of Structural Disorder Near Critical Point in BaTiO 3 Crystal

Min‐Chul Kang, J. E. G. Townsend, S. Lisenkov, I. Ponomareva et autres

Critical points (CPs) in ferroelectrics are known for their association with giant dielectric and electromechanical responses, yet their structural origin, especially in nonrelaxor systems, remains unclear. We combine in situ biasing-heating transmission electron microscopy with first-principles-based simulations to map polarization disorder across …

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Oxygen Vacancies at Dislocation Core Modulate Plasticity in Strontium Titanate

Min‐Chul Kang, Chunxu Yan, A. M. Frisch, Xufei Fang et autres

Dislocation core chemistry in oxides critically influences mechanical behavior and functionality; yet the evolution of core chemistry during the dislocation motion in them has not been directly observed. Here, using SrTiO3 as a model material, we combine aberration-corrected scanning transmission electron microscopy …

Oxygen vacancies at dislocation core modulate plasticity in strontium titanate

Min‐Chul Kang, Chunxu Yan, A. M. Frisch, Xufei Fang et autres

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Registration-based method for correcting nonlinear drift and random jitter in STEM imaging and spectroscopic mapping

Min‐Chul Kang, Juhong Park, Cheol‐Woong Yang

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Decoupling size and surface effects of intermetallic CuPd nanocrystals for electrocatalytic nitrate reduction to ammonia

Liyue Zhang, Zaheer Masood, Qiang Gao, Min‐Chul Kang et autres

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CSD 2374310: Experimental Crystal Structure Determination

Mingyu Xu, Yongbin Lee, Xianglin Ke, Min‐Chul Kang

An entry from the Inorganic Crystal Structure Database, the world’s repository for inorganic crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the joint CCDC and FIZ Karlsruhe Access …

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Giant Uniaxial Magnetocrystalline Anisotropy in SmCrGe 3

Mingyu Xu, Yongbin Lee, Xianglin Ke, Min‐Chul Kang et autres

High Resolution Image Download MS PowerPoint Slide Magnetic anisotropy is a crucial characteristic for enhancing the spintronic device performance. The synthesis of SmCrGe 3 single crystals through a high-temperature solution method has led to the determination of uniaxial magnetocrystalline anisotropy. Phase verification …

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Atomic-Scale Characterization of Dilute Dopants in Topological Insulators via STEM–EDS Using Registration and Cell Averaging Techniques

Min‐Chul Kang, Farhan Islam, Jiaqiang Yan, David Vaknin et autres

Magnetic dopants in three-dimensional topological insulators (TIs) offer a promising avenue for realizing the quantum anomalous Hall effect (QAHE) without the necessity for an external magnetic field. Understanding the relationship between site occupancy of magnetic dopant elements and their effect on macroscopic …

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Giant Uniaxial Magnetocrystalline Anisotropy in SmCrGe$_3$

Mingyu Xu, Yongbin Lee, Xianglin Ke, Min‐Chul Kang et autres

Magnetic anisotropy is a crucial characteristic for enhancing spintronic device performance. The synthesis of SmCrGe$_3$ single crystals through a high-temperature solution method has led to the determination of uniaxial magnetocrystalline anisotropy. Phase verification was achieved using scanning transmission electron microscopy (STEM), powder, …

Effect of Different Grain Boundary Diffusion Alloys on Magnetic Properties of Dy-Free Sintered NdFeB Magnet

Wei Tang, Jing Wang, Chaochao Pan, Min‐Chul Kang et autres

Dy-free sintered magnets were fabricated by blending Neo powder with different grain boundary diffusion alloy powders. Cu, CeAl and CeAlCu have a negative effect on Hcjof magnets, while PrAlCu and AlCuGa have a positive effect. The PrAlCu-added magnet achieves the best magnetic …

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