3 article(s) from Han, Luyang
- Full Research Paper
- Published 23 Aug 2011
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Figure 1: (a) XRD of Pt films on STO(100) and MgO(100) in Bragg–Brentano geometry. The diffractograms clearly...
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Figure 2: SEM images of Co NPs on Pt(111)/MgO(100) and Pt(100)/STO(100) are displayed in panels (a) and (b), ...
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Figure 3: AFM height distributions of Co NPs on Pt(111)/MgO(100) in the as-prepared state and after annealing...
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Figure 4: Panel (a) shows XMCD difference spectra for Co NPs on Pt(111) in the as-prepared state and after an...
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Figure 5: Element specific XMCD hysteresis loops measured at the Co L3 maximum dichroic signal at T = 12 K an...
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Figure 6: (a) In-plane hysteresis loops measured by SQUID magnetometry at T = 29 K, i.e., close to the compen...
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Figure 7: Bright field TEM images of Co NPs on Pt(100) films after annealing at TA = 250 °C (as-prepared stat...
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Figure 8: HRTEM image of annealed Co NPs on Pt(100) film after TA = 500 °C for 30 min. The arrows indicate a ...
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Figure 9: The left image shows the high angle annular dark-field (HAADF) image of the sample shown in Figure 8 using ...
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Figure 10: Proposed model of local alloying and diffusion of Co NPs on Pt films. Details are discussed in the ...
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- Full Research Paper
- Published 01 Jun 2011
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Figure 1: Scanning electron micrograph of Fe nanoparticles deposited on Si. The average particle size observe...
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Figure 2: Transmission electron microscope image of Fe nanoparticles (dark contrast) coated with a thin SiOx ...
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Figure 3: Electron diffraction pattern of the Fe nanoparticles. The Miller indices of the respective lattice ...
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Figure 4: X-ray diffraction patterns (Cu Kα radiation) of Fe nanoparticles embedded in a Cu film on a Ta subs...
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Figure 5: In-plane hysteresis curves of the embedded Fe nanoparticles measured at 10 K in as-prepared state (...
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Figure 6: In-plane hysteresis curves of the embedded Fe nanoparticles after loading of the Ta substrate with ...
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Figure 7: ZFC (circles) and FC (squares) magnetization curves of the Fe nanoparticles embedded in Cu film in ...
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- Full Research Paper
- Published 22 Nov 2010
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Scheme 1: Preparation of NPs by a reverse micelle technique. PS-b-P2VP or PS-b-P4VP is dispersed in anhydrous...
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Figure 1: CoCl2 loaded PS(1779)-b-P2VP(857) reverse micelles deposited at different dip-coating velocities; (...
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Figure 2: Co NPs prepared from CoCl2-loaded PS(1779)-b-P2VP(857) reverse micelles deposited on a Si AFM-tip b...
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Figure 3: Fe (left column) and Co (right column) NPs prepared from PS(312)-P2VP(71) (upper panels) and PS(177...
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Figure 4: SEM micrographs of FePt NPs with 2.6 nm, 4.5 nm, and 9.4 nm diameter (top panels) and their AFM hei...
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Figure 5: Photoelectron spectroscopy of Co-precursor loaded PS(1779)-P2VP(857) reverse micelles after differe...
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Figure 6: Pt-4f and Fe-2p XPS spectra of 9.8 nm FePt particles before and after exposure to ambient air for 2...
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Figure 7: TEM images of 3 nm FePt NPs on Si/SiO2 after annealing at 650 °C for 90 min. (a) Bright-field TEM i...
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Figure 8: Aberration corrected HRTEM images of FePt particles seen along [100] direction. The L10 ordering al...
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Figure 9: Aberration corrected HR-TEM images of about 8 nm FePt NPs in [101] orientation. Crystal defects such as ...
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Figure 10: (a) Schematics of the compensation approach: Temperature dependence of the magnetic susceptibility ...
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Figure 11: (a) DC-demagnetization and isothermal remanent magnetization of 8 nm Co particles measured by SQUID...
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Figure 12: Element-specific magnetic hysteresis loops of 5.8 nm FePt NPs taken at the Fe-L3 edge at T = 11 K a...
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Figure 13: Coercive field at T = 300 K as function of the diameter of FePt NPs after annealing for 30 min at T...
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Figure 14: Experimental hysteresis loops of 5.8 nm FePt NPs at 11 K and simulations using a bimodal Gaussian K...
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Figure 15: Distributions of the effective anisotropy Keff for arrays of differently sized NPs used for simulat...
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Figure 16: (a) Coercive fields at T = 11 K and T = 300 K as function of 30 min annealing time at temperature TA...
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Figure 17: Co-L3,2 XA and XMCD spectra of 5.6 nm Co56Pt44 NPs after annealing at 700 °C taken at external fiel...
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Figure 18: Element-specific magnetic hysteresis loops of 5.8 nm Co56Pt44 NPs taken at the Co-L3 edge maximum d...
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Figure 19: SEM images of 8 nm Co-based NP after oxygen plasma (a) and after Au photoseeding of reduced particl...
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