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  • Open Access English
    Authors: 
    Chaboy, Jesús; Laguna-Marco, Maria Angeles; Piquer, Cristina; Maruyama, Hiroshi; Kawamura, Naomi; Ishimatsu, Naoki; Suzuki, Motohiro; Takagaki, Masafumi;
    Publisher: American Physical Society
    Countries: Japan, Spain

    We present an x-ray magnetic circular dichroism (XMCD) study performed at both the Co K edge and the Lu L2,3 edges on (YyLu1−y)(Co1−xAlx)2 systems. The XMCD spectra reflect the different magnetic character of these systems, allowing us to monitor the transition from wea...

  • Open Access English
    Authors: 
    Chaboy, Jesús; Barranco, Ángel; Yanguas-Gil, Alejandro; Yubero, Francisco; González-Elipe, Agustín R.;
    Publisher: American Physical Society
    Country: Spain

    This work reports on x-ray absorption spectroscopy study at the Si K edge of several amorphous SiOxCyHz polymers prepared by plasma-enhanced chemical-vapor deposition with different C/O ratios. SiO2 and SiC have been used as reference materials. The comparison of the ex...

  • Open Access
    Authors: 
    Hatada, Keisuke; Chaboy, Jesús;
    Publisher: American Chemical Society

    6 pages, 5 figures.-- PACS number(s) : 78.70.Dm, 61.10.Ht.-- ArXiv pre-print: http://arxiv.org/abs/0706.4370 This work reports a theoretical study of the x-ray absorption near-edge structure spectra at both the Cu and the Mn K-edge in several Cu2MnM (M=Al, Sn, and In) H...

  • Open Access English
    Authors: 
    Chaboy, Jesús; Muñoz Páez, Adela; Sánchez Marcos, Enrique;
    Publisher: International Union of Crystallography
    Country: Spain

    A theoretical analysis of the X-ray absorption near-edge structure spectra at the Cu K-edge in several divalent copper [Cu(II)] compounds showing a distorted nearest-neighborhood around copper is presented. The experimental spectra of CuO and KCuF3 have been compared wi...

  • Open Access
    Authors: 
    Naoki Ishimatsu; S. Miyamoto; Hiroshi Maruyama; Jesús Chaboy; M. A. Laguna-Marco; Naomi Kawamura;
    Publisher: American Physical Society

    4 pages, 3 figures.-- PACS number(s): 75.30.Kz, 78.70.Dm, 61.10.Ht, 78.20.Ls X-ray absorption spectroscopy (XAS) and x-ray magnetic circular dichroism (XMCD) measurements have demonstrated the modification of the magnetic moment of Co in ErCo2 induced by applying pressu...

  • Open Access English
    Authors: 
    Miguel A. Esteruelas; and Ana M. López; Enrique Oñate;
    Country: Spain

    Complex Os(η2-PhCCPh)(CO)(PiPr3)2 (1) reacts with 1 equiv of HBF4 to give the hydride species [OsH(η2-PhCCPh)(CO)(PiPr3)2]BF4 (2), which affords the α-substituted alkenyl compound Os{(E)-C(Ph)CHPh}Cl(CO)(PiPr3)2 (3) by treatment with NaCl. Complex 3 reacts with Brønsted...

  • Publication . Part of book or chapter of book . Article . Conference object . 2007
    Open Access
    Authors: 
    M. A. Laguna-Marco; Jesús Chaboy; C. Piquer; H. Maruyama; N. Ishimatsu; N. Kawamura;
    Publisher: AIP

    3 pages, 3 figures.-- X-Ray Absorption Fine Structure-XAFS13: 13th International Conference.-- et al. We report on a transition metal contribution to the rare-earth L2-edge XMCD spectrum of intermetallic rare-earth - transition metal compounds (R-T). The shape and locat...

  • Open Access
    Authors: 
    M. A. Laguna-Marco; Jesús Chaboy; Cristina Piquer; Hiroshi Maruyama; Naomi Kawamura; Masafumi Takagaki;
    Publisher: Elsevier BV
    Country: Spain

    We present an XMCD study performed at the Fe–K-edge through the Ho(Al1−xFex)2 Laves phases. In agreement with other series, a rare-earth contribution, XMCDR, is found. We have also observed that in these compounds XMCDR is clearly larger than that obtained in series wit...

  • Open Access English
    Authors: 
    Chaboy, Jesús; Laguna-Marco, Maria Angeles; Maruyama, Hiroshi; Ishimatsu, Naoki; Isohama, Yoichi; Kawamura, Naomi;
    Publisher: American Physical Society
    Countries: Spain, Japan

    We present an x-ray magnetic circular dichroism (XMCD) study performed at the Co K edge and at the Er L2,3 edges in the Er1−xYxCo2 series. Our results indicate that both Er and Co magnetic sublattices order at the same temperature for all the investigated compounds. In ...

  • Open Access
    Authors: 
    Jesús Chaboy; Hiroshi Maruyama; Naomi Kawamura;
    Publisher: Institute of Physics Publishing
    Country: Spain

    This work reports a theoretical x-ray absorption near-edge structure (XANES) spectroscopy study at the Mn K-edge in several Mn3MC (M = Sn, Zn and Ga) compounds. Comparison of the experimental Mn K-edge XANES spectra and theoretical computations based on multiple scatter...