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  1. Article

    Open Access

    The effect of orbital-lattice coupling on the electrical resistivity of YBaCuFeO5 investigated by X-ray absorption

    Temperature-dependent X-ray absorption near-edge structures, X-ray linear dichroism (XLD) and extended X-ray absorption fine structure (EXAFS) spectroscopic techniques were used to investigate the valence stat...

    M. K. Srivastava, X.-S. Qiu, Y. Y. Chin, S. H. Hsieh, Y. C. Shao… in Scientific Reports (2019)

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  2. Article

    Open Access

    Strain effect on orbital and magnetic structures of Mn ions in epitaxial Nd0.35Sr0.65MnO3/SrTiO3 films using X-ray diffraction and absorption

    This study probes the temperature-dependent strain that is strongly correlated with the orbital and magnetic structures of epitaxial films of Nd0.35Sr0.65MnO3 (NSMO) that are fabricated by pulsed laser deposition...

    Y. C. Shao, N. G. Deshpande, Y. Y. Chin, S. H. Hsieh, C. H. Du… in Scientific Reports (2019)

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  3. Article

    Open Access

    Anisotropy in the magnetic interaction and lattice-orbital coupling of single crystal Ni3TeO6

    This investigation reports on anisotropy in the magnetic interaction, lattice-orbital coupling and degree of phonon softening in single crystal Ni3TeO6 (NTO) using temperature- and polarization-dependent X-ray ab...

    Anirudha Ghosh, K.-H. Chen, X.-S. Qiu, S. H. Hsieh, Y. C. Shao… in Scientific Reports (2018)

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  4. Article

    Open Access

    Origin of magnetic properties in carbon implanted ZnO nanowires

    Various synchrotron radiation-based spectroscopic and microscopic techniques are used to elucidate the room-temperature ferromagnetism of carbon-doped ZnO-nanowires (ZnO-C:NW) via a mild C+ ion implantation metho...

    Y. F. Wang, Y. C. Shao, S. H. Hsieh, Y. K. Chang, P. H. Yeh… in Scientific Reports (2018)

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  5. Article

    Open Access

    Anisotropy in the thermal hysteresis of resistivity and charge density wave nature of single crystal SrFeO3-δ: X-ray absorption and photoemission studies

    The local electronic and atomic structures of the high-quality single crystal of SrFeO3-δ (δ~0.19) were studied using temperature-dependent x-ray absorption and valence-band photoemission spectroscopy (VB-PES) to...

    S. H. Hsieh, R. S. Solanki, Y. F. Wang, Y. C. Shao, S. H. Lee… in Scientific Reports (2017)

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  6. Article

    Open Access

    Electronic and atomic structures of the Sr3Ir4Sn13 single crystal: A possible charge density wave material

    X-ray scattering (XRS), x-ray absorption near-edge structure (XANES) and extended x-ray absorption fine structure (EXAFS) spectroscopic techniques were used to study the electronic and atomic structures of the...

    H.-T. Wang, M. K. Srivastava, C.-C. Wu, S.-H. Hsieh, Y.-F. Wang… in Scientific Reports (2017)

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  7. Article

    Open Access

    Visualizing chemical states and defects induced magnetism of graphene oxide by spatially-resolved-X-ray microscopy and spectroscopy

    This investigation studies the various magnetic behaviors of graphene oxide (GO) and reduced graphene oxides (rGOs) and elucidates the relationship between the chemical states that involve defects therein and ...

    Y. F. Wang, Shashi B. Singh, Mukta V. Limaye, Y. C. Shao, S. H. Hsieh… in Scientific Reports (2015)

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  8. Article

    Open Access

    Understanding of sub-band gap absorption of femtosecond-laser sulfur hyperdoped silicon using synchrotron-based techniques

    The correlation between sub-band gap absorption and the chemical states and electronic and atomic structures of S-hyperdoped Si have been extensively studied, using synchrotron-based x-ray photoelectron spectr...

    Mukta V. Limaye, S. C. Chen, C. Y. Lee, L. Y. Chen, Shashi B. Singh… in Scientific Reports (2015)

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  9. Article

    Open Access

    The Effect of Thermal Reduction on the Photoluminescence and Electronic Structures of Graphene Oxides

    Electronic structures of graphene oxide (GO) and hydro-thermally reduced graphene oxides (rGOs) processed at low temperatures (120–180°C) were studied using X-ray absorption near-edge structure (XANES), X-ray ...

    C.-H. Chuang, Y.-F. Wang, Y.-C. Shao, Y.-C. Yeh, D.-Y. Wang… in Scientific Reports (2014)

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  10. Article

    Open Access

    Graphene Supported Graphone/Graphane Bilayer Nanostructure Material for Spintronics

    We report an investigation into the magnetic and electronic properties of partially hydrogenated vertically aligned few layers graphene (FLG) synthesized by microwave plasma enhanced chemical vapor deposition....

    Sekhar C. Ray, Navneet Soin, Thuto Makgato, C. H. Chuang, W. F. Pong… in Scientific Reports (2014)

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  11. No Access

    Article

    Electronic Structure of EuMo6Se8 Studied by X-Ray Absorption Spectroscopy

    The rare-earth based molybdenum chalcogenides, REMo6Se8 (RE = rare-earth metals) have been extensively studied because of their unique crystal structure based on Mo6Se8 clusters and their outstanding properties i...

    K. Asokan, O. Peña, L. Le Polles, J. C. Jan, J. W. Chiou… in Journal of Cluster Science (2009)

  12. No Access

    Article

    Effect of Oxygen Concentration on Superconducting Properties of Rubidium Tungsten Bronzes Rb x WO y

    Superconducting transition temperature (T c) as a function of oxygen concentration for hexagonal rubidium tungsten bronzes Rb x WO y ...

    L. C. Ting, H. H. Hsieh, H. H. Kang… in Journal of Superconductivity and Novel Mag… (2007)

  13. No Access

    Article

    Electron- and Hole-Do** Effects in Manganites Studied by X-Ray Absorption Spectroscopy

    We investigate the electronic structures of hole-doped, La0.7Ca0.3MnO3, and electron-doped, La0.7Ce0.3MnO3, manganites by x-ray absorption near edge structure (XANES) spectroscopy at the O and Mn K-edges. While, ...

    K. Asokan, J. C. Jan, K. V. R. Rao, J. W. Chiou, H. M. Tsai… in Hyperfine Interactions (2005)

  14. No Access

    Chapter and Conference Paper

    Electron- and Hole-Do** Effects in Manganites Studied by X-Ray Absorption Spectroscopy

    We investigate the electronic structures of hole-doped, La0.7Ca0.3MnO3, and electrondoped, La0.7Ce0.3MnO3, manganites by x-ray absorption near edge structure (XANES) spectroscopy at the O and Mn K-edges. While, t...

    K. Asokan, J. C. Jan, K. V. R. Rao, J. W. Chiou, H. M. Tsai, W. F. Pong… in IWNMS 2004 (2005)

  15. No Access

    Article

    Deposition and Characterization of Diamond-Like Carbon Thin Films by Electro-Deposition Technique Using Organic Liquid

    Diamond-like carbon films were synthesized by electro-deposition technique from an organic liquid (a solution of alpha- and beta-pinenes in n-hexane) on silicon substrate at room temperature and at room pressu...

    S. C. Ray, B. Bose, J. W. Chiou, H. M. Tsai, J. C. Jan… in Journal of Materials Research (2004)

  16. No Access

    Article

    Effect of Ag‐promotion on Pd catalysts by XANES

    Pd L3 near‐edge absorption measurements (XANES) were performed on four commercial acetylene hydrogenation catalyst samples, with and without the Ag promoter. The Pd L3 edge XANES spectra showed that the Ag‐promot...

    D.C. Huang, K.H. Chang, W.F. Pong, P.K. Tseng, K.J. Hung, W.F. Huang in Catalysis Letters (1998)

  17. No Access

    Article

    EXAFS Determination of Bond Lengths in Zn1−x MnxSe

    EXAFS has been used to determine bond lengths in the diluted magnetic semiconductor Zn1−xMnxSe. These alloys change from a cubic (zincblende) crystal structure to a hexagonal (wurtzite) structure as a function of...

    B. A. Bunker, W.-F. Pong, U. Debska, D. R. Yoder-Short… in MRS Online Proceedings Library (1986)