Materials Literature
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Nickel monosilicide (NiSi) has emerged as an excellent material of choice for source-drain contact applications below 45 nm node complementary metal-oxide-semiconductor (CMOS) technology. We have investigated the formation of nanoscale NiSi by ion irradiation of Si (~5 nm)/Ni(~15 nm)/Si, grown under ultrahigh vacuum e…
Since last few years, research based on topological insulators (TI) is in great interests due to intrinsic exotic fundamental properties and future potential applications such as quantum computers or spintronics. The fabrication of TI nanodevices and study on their transport properties mostly focused on high quality c…
The (001) surface of SrTiO3 were transformed from insulating to conducting after Ar+ irradiation, producing a quasi two-dimensional electron gas (2DEG). This conducting surface layer can introduce Rashba spin orbital coupling due to the broken inversion symmetry normal to the plane. The spin splitting of such a surfac…
The paper presents the author view on spin-rooted properties of graphene supported by numerous experimental and calculation evidences. Dirac fermions of crystalline graphene and local spins of graphene molecules are suggested to meet a strict demand - different orbitals for different spins- which leads to a large spec…
The higher-order Landau-Devonshire theory for BaTiO3 is proposed. The structural stabilities of some Landau potentials proposed for the phenomenology of BaTiO3 until now are discussed in the framework of the singularity theory. We confirm that the structurally stable Landau potential has to contain at least all the in…
Recently, type-II Dirac fermions characterized by strongly titled Dirac cones have been proposed. The new fermions exhibit unique physical properties different from the type-I Dirac fermions in graphene, and thus attract tremendous attentions. Up to date, all type-II fermions are only found in the heavy compounds with…
Ferromagnetic character and biocompatible properties have become key factors for developing next-generation spintronic devices and show potential in biomedical applications. Unfortunately, the Mn-containing monolayer is not biocompatible though it has been extensively studied, and the Cr-containing monolayer is not en…
The present research is based on a comparative study of anhydride cured biobased and petroleum-based epoxy network. The effect of epoxidized soybean oil (ESO) bioresin on petroleum-based epoxy (DGEBA) at varying compositions cured with methylhexahydrophthalic anhydride (MHHPA) as curing agent and 2-methyl imidazole (2…
Co <sub>9</sub> S <sub>8</sub> @S,N-doped carbon materials derived from S,N-containing Co-MOFs exhibited superior performance as bifunctional oxygen electrocatalysts and supercapacitor electrode materials.
Via incorporation of Sr2+ into (Pb,La)(Zr,Sn,Ti)O3, high recoverable energy density (Ure) is achieved in (Pb,Sr,La)(Zr,Sn,Ti)O3 (PSLZST) ceramics. All Sr2+ modified ceramics exhibit orthorhombic antiferroelectric (AFE) characteristics, and have higher ferroelectric-AFE phase switching electric field (EA, proportional…
One of the greatest challenges in the field of semiconductor nanomaterials is to make trap-free nanocrystalline structures to attain a remarkable improvement of their optoelectronic performances. In semiconductor nanomaterials, a very high number of atoms is located on the surface and these atoms form the main source…
After getting detail structural information from Nd-Fe-B permanent magnets by multi-scale structural characterization, we employ finite element micromagnetic simulations to explain how the microstructure influences the magnetization reversals and coercivity. In this paper, the basis of the micromagnetic simulation and…
We utilize first-principles calculations within density-functional theory to investigate the possibility of strain engineering in the tuning of the band structure of two-dimensional <TEX>$MoS_2$</TEX>. We find that the band structure of <TEX>$MoS_2$</TEX> monolayers transits from direct to indirect when mechanical str…
This paper presents our recent microstructure characterization work of Nd-Fe-B sintered magnets with the emphasis of the structure and chemistry of Nd-rich phases at grain boundary triple junctions and thin Nd-rich phases formed along grain boundaries. The use of secondary electron imaging through the in-lens type det…
A thermodynamic assessment of the Nd-Fe-Cu system was attempted using the CALPHAD method, to clarify an effect of Cu addition to the permanent magnets based on Nd2Fe14B phase. The regular solution model was applied to liquid phase and solid solutions. Intermediate compounds were described as stoichiometric phases. The…
ABSTRACT Nanofibers of Al 2 O 3 (commercial product Nafen TM ) with characteristic length of ∼100 nm and diameter of ∼10 nm were used to create new hybrid materials based on copolymer of ethylene and propylene. Nanocomposites were obtained by in situ catalytic copolymerization on the system rac ‐Et(2‐MeInd) 2 ZrMe 2 /…
High Resolution Image Download MS PowerPoint Slide Water-soluble poly(allylamine) Mn 2+ -doped Si (Si Mn ) nanoparticles (NPs) were prepared and show promise for biologically related applications. The nanoparticles show both strong photoluminescence and good magnetic resonance contrast imaging. The morphology and aver…
In the present investigation, the dissimilar metal butt joints between low nickel high nitrogen 201 stainless steel and conventional 304 stainless steel were prepared by shielded metal arc welding process with two different fillers, E308L and E309L. The effects of fillers, along with variation in solution annealing te…
Phase-change materials, the highly promising candidate for nonvolatile data recording, present a different phase-change property when film thickness shrinks to very deep submicron scale. The local structure of amorphous GeTe ultrathin films, which contributes to the characteristics of phase change, is examined using X…
LiBr refrigerating systems are frequently used in industry, but the pipelines are easily corroded or blocked by the LiBr solution with high flow resistance. Here, a superhydrophobic Fe surface was proposed and tested for applicability. After constructing a rough Fe 2 O 3 nanotube array on a Fe surface by the anodizati…