Search Results - "M.-H. Whangbo"

General theory for the ferroelectric polarization induced by spin-spiral order by Xiang, H J, Kan, E J, Zhang, Y, Whangbo, M-H, Gong, X G

“…The ferroelectric polarization of triangular-lattice antiferromagnets induced by helical spin-spiral order is not explained by any existing model of…”
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Origin of the structural and magnetic anomalies of the layered compound SrFeO2: a density functional investigation by Xiang, H J, Wei, Su-Huai, Whangbo, M-H

“…The structural and magnetic anomaly of the layered compound SrFeO2 are examined by first-principles density functional calculations and Monte Carlo…”
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Charge order and the origin of giant magnetocapacitance in LuFe2O4 by Xiang, H J, Whangbo, M-H

“…The nature of the charge order in the charge frustrated compound LuFe(2)O(4) and its effect on magnetocapacitance were examined on the basis of…”
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Ferromagnetism of undoped GaN mediated by through-bond spin polarization between nitrogen dangling bonds by Jin, Hao, Dai, Ying, Huang, BaiBiao, Whangbo, M.-H.

“…Room-temperature ferromagnetism occurs in GaN nanoparticles even without any doped magnetic ions. The cause for this finding was examined by performing density…”
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Density-functional characterization of the multiferroicity in spin spiral chain cuprates by Xiang, H J, Whangbo, M-H

“…The ferroelectricity of the spiral magnets LiCu2O2 and LiCuVO4 was examined by calculating the electric polarizations of their spin spiral states on the basis…”
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Unified model of ferroelectricity induced by spin order by Xiang, H. J., Wang, P. S., Whangbo, M.-H., Gong, X. G.

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Strong Dzyaloshinskii-Moriya interaction and origin of ferroelectricity in Cu2OSeO3 by Yang, J H, Li, Z L, Lu, X Z, Whangbo, M-H, Wei, Su-Huai, Gong, X G, Xiang, H J

“…By performing density functional calculations, we investigate the origin of the Skyrmion state and ferroelectricity in Cu2OSeO3. We find that the…”
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Spin-orbit coupling and ion displacements in multiferroic TbMnO3 by Xiang, H J, Wei, Su-Huai, Whangbo, M-H, Da Silva, Juarez L F

“…The magnetic and ferroelectric (FE) properties of TbMnO3 are investigated on the basis of relativistic density functional theory calculations. We show that,…”
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Charge order in LuFe2O4: antiferroelectric ground state and coupling to magnetism by Angst, M, Hermann, R P, Christianson, A D, Lumsden, M D, Lee, C, Whangbo, M-H, Kim, J-W, Ryan, P J, Nagler, S E, Tian, W, Jin, R, Sales, B C, Mandrus, D

“…X-ray scattering by multiferroic LuFe2O4 is reported. Below 320 K, superstructure reflections indicate an incommensurate charge order with propagation close to…”
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Formulation of Phosphorescence Mechanisms in Inorganic Solids Based on a New Model of Defect Conglomeration by Clabau, F., Rocquefelte, X., Le Mercier, T., Deniard, P., Jobic, S., Whangbo, M.-H.

“…The phosphorescence mechanisms of various phosphors were explored by taking into consideration the presence of interactions between dopant cations and…”
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Strong single-ion anisotropy and anisotropic interactions of magnetic adatoms induced by topological surface states by Li, Z. L., Yang, J. H., Chen, G. H., Whangbo, M.-H., Xiang, H. J., Gong, X. G.

“…The nature of the magnetism brought about by Fe adatoms on the surface of the topological insulator Bi sub(2) Se sub(3) was examined in terms of density…”
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Prediction for room-temperature half-metallic ferromagnetism in the half-fluorinated single layers of BN and ZnO by Kan, E. J., Xiang, H. J., Wu, F., Tian, C., Lee, C., Yang, J. L., Whangbo, M.-H.

“…On the basis of density functional calculations we explored the possibility that BN and ZnO single layers can become ferromagnetic at room temperature and…”
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Interaction of tantalum, titanium and phosphorus at 1070 K: Phase diagram and structural chemistry by Lomnytska, Ya, Dzevenko, M., Babizhetskyy, V., Toma, O., Smolyak, O., Gordon, E.E., Whangbo, M.-H., Köhler, J.

“…The solid state phase diagram for the equilibria of the ternary Ta-Ti-P system was established by X-ray powder diffraction at T = 1070 K in the region up to…”
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Mechanism of Phosphorescence Appropriate for the Long-Lasting Phosphors Eu2+-Doped SrAl2O4 with Codopants Dy3+ and B3 by Clabau, F, Rocquefelte, X, Jobic, S, Deniard, P, Whangbo, M.-H, Garcia, A, Le Mercier, T

“…The existing mechanisms proposed to explain the phosphorescence of SrAl2O4:Eu2+,Dy3+ and related phosphors were found to be inconsistent with a number of…”
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Predicting the spin-lattice order of frustrated systems from first principles by Xiang, H. J., Kan, E. J., Wei, Su-Huai, Whangbo, M.-H., Gong, X. G.

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Thermodynamically stable single-side hydrogenated graphene by Xiang, H. J., Kan, E. J., Wei, Su-Huai, Gong, X. G., Whangbo, M.-H.

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Phase imaging and stiffness in tapping-mode atomic force microscopy by Magonov, S.N., Elings, V., Whangbo, M.-H.

“…The dependence of phase angles in tapping-mode atomic force microscopy on the magnitude of tip-sample repulsive interactions was investigated, and phase images…”
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Structural Model of Planar Defects in CaCu3Ti4O12 Exhibiting a Giant Dielectric Constant by Whangbo, M.-H., Subramanian, M. A.

“…It is known that the unusually large dielectric constant in single crystals of CaCu3Ti4O12 (CCTO) requires the existence of barrier layers in the form of twin…”
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Analysis of the Spin Exchange Interactions and the Ordered Magnetic Structures of Lithium Transition Metal Phosphates LiMPO4 (M = Mn, Fe, Co, Ni) with the Olivine Structure by Dai, D, Whangbo, M.-H, Koo, H.-J, Rocquefelte, X, Jobic, S, Villesuzanne, A

“…The olivine-type compounds LiMPO4 (M = Mn, Fe, Co, Ni) consist of MO4 layers made up of corner-sharing MO6 octahedra of high-spin M2+ ions. To gain insight…”
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Experimental and Theoretical Investigation on the Relative Stability of the PdS2- and Pyrite-Type Structures of PdSe2 by Soulard, C, Rocquefelte, X, Petit, P.-E, Evain, M, Jobic, S, Itié, J.-P, Munsch, P, Koo, H.-J, Whangbo, M.-H

“…Under ambient condition PdSe2 has the PdS2-type structure. The crystal structure of PdSe2 under pressure (up to 30 GPa) was investigated at room temperature by…”
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