A5069274676- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Magnetism in coordination complexes
- Fusion materials and technologies
- Microstructure and Mechanical Properties of Steels
- Rare-earth and actinide compounds
- Lanthanide and Transition Metal Complexes
- Magnetic and transport properties of perovskites and related materials
- Hydrogen embrittlement and corrosion behaviors in metals
- Nuclear Materials and Properties
- Organic and Molecular Conductors Research
- Advanced materials and composites
- Metal Alloys Wear and Properties
- Welding Techniques and Residual Stresses
- Metal-Organic Frameworks: Synthesis and Applications
- Geothermal Energy Systems and Applications
- Physics of Superconductivity and Magnetism
- Anodic Oxide Films and Nanostructures
- Chinese history and philosophy
- Advanced Condensed Matter Physics
- Iron-based superconductors research
- Metallurgy and Material Forming
- Magnetic Properties of Alloys
- Superconducting Materials and Applications
- Metal and Thin Film Mechanics
Korea Institute of Industrial Technology
2013-2025
Korea Institute of Geoscience and Mineral Resources
2003-2024
Korea Institute of Fusion Energy
2014-2023
Busan Institute of Science and Technology
2022
Seoul National University
1997-2015
Fusion Academy
2008-2014
Fusion (United States)
2008-2014
Pusan National University
2014
Dong-Eui University
2014
Materials Science & Engineering
2013
Hybrid nanoparticles are of significant interest primarily because their innate multifunctional capabilities. These capabilities can be exploited when hybrid used for applications in the biomedical sciences particular, where they utilized as multimodal nanoplatforms sensing, imaging, and therapy biological targets. However, realization has been difficult, part a lack high quality which possess aqueous colloidal stability biocompatibility while retaining multifunctionalities. Here, we present...
A Korean fusion energy development promotion law (FEDPL) was enacted in 2007. As a following step, conceptual design study for steady-state demonstration reactor (K-DEMO) initiated 2012. After the thorough 0D system analysis, parameters of main machine characterized by major and minor radii 6.8 2.1 m, respectively, were chosen further study. The analyses heating current drives performed plasma operation scenarios. Preliminary results on lower hybrid neutral beam drive are included herein....
Luftdicht verschlossen: In einem Ni9W6-High-Spin-Cluster (S=12) mit Cyanidbrücken sind die NiII- (grün) und WV-Ionen (violett) ferromagnetisch gekoppelt. Die Substitution der Solvensmoleküle an Clusteroberfläche gegen 2,2′-Bipyridin ergab einen luftstabilen Ni9W6-Einzelmolekülmagnet. Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2001/2006/z601759_s.pdf or from author. Please note: The publisher not responsible content functionality...
Two-step magnetic transitions: An azide-bridged 1D Mn(III) coordination polymer with a unique single end-on mode was prepared; it displayed atypical antiferromagnetic couplings and field-induced two-step transitions (see figure). The spin-canted phenomenon in the chain complex plays pivotal role establishing slow relaxation.
Two manganese(III) azide complexes capped with tetradentate Schiff bases were characterized structurally and magnetically. The replacement of halogens on the leads to a drastic structural alteration from dimer (1) bridged by phenoxide one-dimensional chain (2) linked in single end-to-end mode. Notably, magnetic studies 2 show concomitant existence spin canting metamagnetism.
Assembling [W(CN) 6(bpy)] (-) and magnetic anisotropic Mn Schiff bases produced two (III)(3d)-W (V)(5d) bimetallic chains. Modulation of the types degrees interchain pi-pi interactions in one-dimensional coordination polymers leads to variation behavior from a metamagnetic character single-chain magnet property.
A silicon carbide (SiC) powder compact was prepared with submicrometer β-SiC, yttrium nitrate as a sintering additive, and polysiloxane-phenol resin precursors for nanosized SiC. By hot-pressing, fully dense SiC ceramics good electrical conductivity, high 3 × 104 (Ω·m)−1 at room temperature, were obtained. The could be machined to complex shapes by electrodischarge machining.
Al ‐ and B ‐doped 3 C – SiC ceramics were prepared by hot‐pressing powder compacts containing submicrometer‐sized β‐ , precursors of 5 wt% nanosized an optional additive ( or ) in Ar atmosphere. Electron probe microanalysis EPMA investigation on the obtained specimens revealed that a portion doped atoms substituted zinc blende lattice sites. The temperature‐dependent electrical resistivity data measured 4–300 K range compared with those undoped specimen. exhibited resistivities as high ~10 Ω...
The high-Mn austenitic steels exhibit fully structure at room temperatures while showing twinning mechanisms during deformations. In the SAW welding process, microstructure and mechanical properties of heat affected zone (HAZ) weld metal (WM) are by causing potential degradation due to segregation depletion Mn in HAZ WM regions. this study, post treatment (PWHT) was performed 800 °C, 900 °C 1000 improve welded steels. We examined electron backscattered diffraction (EBSD) energy dispersive...
Two cyanide-bridged WV−M [M = MnIII (1), CoII (2)] bimetallic clusters were prepared by self-assembling a new molecular precursor [W(CN)6(bpy)]- and the corresponding metal complexes. Compound 1 shows tetranuclear W2Mn2 entity, consisting of Jahn−Teller ion, MnIII, which serves as an anisotropic source, while compound 2 exhibits trimeric W2Co structure. Among them, displays slow relaxation magnetization, is typical single-molecule magnet behavior.
A new generation of ITER TF conductor samples has been assembled and tested in SULTAN 2007 following a common procedure agreed among the parties. The test results six samples, made twelve sections manufactured Europe, Japan, Korea Russia, are reported here. layout reflects design, with minor differences for Nb <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> Sn strand characteristics, void fraction twist pitch. object is straight...
A new cyanide-bearing molecular precursor, mer-[Fe(pzcq)(CN)3]- (1), and a zigzag chain, [Fe(pzcq)(CN)3][Mn(salen)]·4H2O (2), were prepared characterized in terms of structure magnetism. Magnetic data reveal that intrachain antiferromagnetic couplings via cyanide ligands 2 are clearly operating, resulting ferrimagnetic nature.
Using a single-crystal wire fabricated through the crystal growth process, contribution of grain boundaries (GBs) to electrical resistivity was investigated in copper. We developed novel fabrication process that preserved grain-free structure copper (SCC) grown by Czochralski method. The SCC showed reduction 9% compared international annealed standard (IACS) resistivity, with resulting value smaller than silver. also found GBs strongly influenced above 70 K, but hardly contributed below...
In order to understand the unusual magnetic phase of multiferroic hexagonal manganites, we have investigated doping effects manganites ${\text{YMn}}_{0.9}{X}_{0.1}{\text{O}}_{3}$ ($X=\text{Al}$, Ru, and Zn) by using bulk measurements as well neutron-diffraction experiments. We also re-examined structure ${\text{YMnO}}_{3}$ find that it has mainly ${\ensuremath{\Gamma}}_{3}$ representation with an about 18% mixing ${\ensuremath{\Gamma}}_{4}$ representation. Upon nonmagnetic atoms such Al, Zn...
A Co(II)-Cu(II) framework based on a paramagnetic metalloligand [Co(Tt)(2)] shows permanent porosity with record high surface area for magnetic MOFs as well reversible transformation between paramagnetic-like state and short-range order in the low-temperature regime upon solvation-desolvation cyclings.
Abstract Three azide‐bridged Mn III chains [Mn(3‐MeOsalpn)(N 3 )] ⋅ 0.5 AClO 4 (A=Na ( 1 ), K 2 Rb ); 3‐MeOsalpn= N , ′‐propylenebis(3‐methoxysalicylideneiminato) dianion) incorporating alkali metal ions and perchlorate anions were systematically synthesized. The overall structure can be described as a one‐dimensional chain bridged by end‐to‐end azide ligands, although spatial arrangements of Jahn–Teller axes in are different from that . Relying on the ions, magnetic properties varied...
Two cyano-bridged Cu(II)-M(V) [M = Mo (2), W (3)] complexes formed by self-assembly of octacyanometalates [M(CN)8]3- (M Mo, W) with a new molecular precursor [Cu(L2)]2+ (1) (L2 macrocyclic ligand) in 2:3 ratio have been investigated terms structures and magnetic behaviors. The M2Cu3 repeating unit both bimetallic compounds is extended to two-dimensional honeycomblike layered structure. pendant ethyl groups on L2 noticeably influence the structural parameters around Cu center. Compared system...
Cyanide-bridged MV−MnIII (M = Mo, W) bimetallic chain complexes with racemic spatial dispositions were constructed by self-assembling [M(CN)8]3− precursors and MnIII Schiff bases. Antiferromagnetic couplings between spin centers within a result in ferrimagnetic nature, slow magnetic relaxations are observed as well.
A simple, mild and environmentally friendly one-pot aqueous synthesis route using urea devoid of surfactant chelating agents is demonstrated for the first time to fabricate high yield crystalline uniform hexagonal prism-shaped weakly magnetic α-Fe2O3nanocrystals. As synthesized α-Fe2O3nanocrystals show ferromagnetic behavior with coercivity values 0.8 0.2 T at 5 300 K, respectively. The reaction temperature plays a crucial role, regulating morphology size.
Reaction of [(Tp)Fe(CN)3]− [Tp = hydrotris(pyrazolyl)borate] with respective Mn(III) Schiff bases led to the formation four dimeric molecules, [(Tp)Fe(CN)3][Mn(1-napen)(H2O)]·MeCN·4H2O [1; 1-napen N,N′-ethylenebis(2-hydroxy-1-naphthylideneiminato) dianion], [(Tp)Fe(CN)3][Mn(5-Clsalen)(H2O)] [2; 5-Clsalcy N,N′-(trans-1,2-cyclohexanediylethylene)bis(5-chlorosalicylideneiminato) [(Tp)Fe(CN)3][Mn(2-acnapen)(MeOH)]·MeOH [3; 2-acnapen N,N′-ethylenebis(1-hydroxy-2-acetonaphthylideneiminato)...