Figure 4
From: Anisotropy in the magnetic interaction and lattice-orbital coupling of single crystal Ni3TeO6

(a) Temperature-dependent X-ray absorption spectra (with circularly polarized X-ray photons) of single crystal NTO at the Ni L3,2-edge in a magnetic field (100 Oe) applied parallel (μ+) and antiparallel (μ−) to the c-axis of NTO, and (b) corresponding XMCD spectra, calculated from the difference in the X-ray absorption spectra obtained at the magnetic fields in two directions [(μ− − μ+)/(μ− + μ+)]. The prominent (negative) XMCD signal at the Ni L3-edge (indicated by the green arrow) at 59 K reveals the existence of FM interaction with Ni spins parallel to the c-axis in NTO.