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Magnetoelastic phase diagram of TbNi_2B_2C

机译：TbNi_2B_2C的磁弹性相图

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摘要

The magnetic phase diagram of the quaternary borocarbide TbNi_2B_2C is investigated by direct means and by studying magnetically induced modifications of the crystal structure. Detailed superconducting quantum interference device measurements reveal a complex phase diagram with live distinct magnetic phases. The phase boundaries are mapped out comprehensively. Synchrotron hard x-ray measurements in applied magnetic fields are employed to probe the magnetoelastic distortions throughout the phase diagram. The determination of the wave vectors of these field-induced lattice deformations suggests a range of commensurate spin-slip-type magnetic structures at low temperatures with wave vectors of the form (q,0,0) with q = 6/11 and 5/9. The proposed magnetic structures yield values of magnetization well in-line with observations. The scattering intensity due to the magnetoelastic deformations exhibits a drastic jump at the phase boundary at 1.3 T and low temperatures.
机译：通过直接手段和研究磁感应对晶体结构的修饰，研究了季硼碳化物TbNi_2B_2C的磁相图。详细的超导量子干涉仪测量结果显示了一个复杂的相图，其中存在明显的磁性相。相界被全面地标出。在施加的磁场中使用同步加速器硬X射线测量来探测整个相图中的磁弹性畸变。这些场致晶格变形的波矢量的确定表明，在低温下一系列相应的自旋滑移型磁性结构具有q = 6/11和5 /的形式（q，0,0）的波矢量9。拟议的磁性结构产生的磁化值与观测值一致。在1.3 T和低温下，由于磁弹性变形而引起的散射强度在相界处表现出急剧的跳跃。

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  • 来源
    《Physical review》 |2018年第22期|224417.1-224417.8|共8页
  • 作者

    Rasmus Toft-Petersen; Thomas Bagger Stibius Jensen; Jens Jensen; Martin von Zimmermann; Steffen Sloth; Frederik Werner Isaksen; Niels Bech Christensen; Yunzhong Chen; Konrad Siemensmeyer; Hazuki Kawano-Furukawa; Hiroyuki Takeya; Asger Bech Abrahamsen; Niels Hessel Andersen;

  • 作者单位

    Department of Physics, Technical University of Denmark, DK-2880 Kgs. Lyngby, Denmark;

    Department of Physics, Technical University of Denmark, DK-2880 Kgs. Lyngby, Denmark;

    Niels Bohr Institute, Universitetsparken 5, DK-2100 Copenhagen, Denmark;

    Deutsches Elektronen-Synchrotron DESY, D-22603 Hamburg, Germany;

    Department of Physics, Technical University of Denmark, DK-2880 Kgs. Lyngby, Denmark;

    Department of Physics, Technical University of Denmark, DK-2880 Kgs. Lyngby, Denmark;

    Department of Physics, Technical University of Denmark, DK-2880 Kgs. Lyngby, Denmark;

    Department of Energy Conversion and Storage, Technical University of Denmark, DK-4000 Roskilde, Denmark;

    Helmholtz Zentrum Berlin fur Materialien und Energie, D-14109 Berlin, Germany;

    Division of Natural/Applied Science, Graduate School of Humanities and Science, Ochanomizu University, Bunkyo-ku, Tokyo 112-86 JO, Japan,RIKEN Center for Emergent Matter Science (CEMS), 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan;

    National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki, 305-0047, Japan;

    Department of Wind Energy, Technical University of Denmark, DK-4000 Roskilde. Denmark;

    Department of Physics, Technical University of Denmark, DK-2880 Kgs. Lyngby, Denmark;

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