Figure 1
From: Formation of ferromagnetic Co–H–Co complex and spin-polarized conduction band in Co-doped ZnO
(a) Remnant magnetization (MR) of ZnCoO powders with varying hydrogen injection conditions (both HIP- and plasma-series) measured at room temperature. The inset shows field-dependent magnetization curves of H0, HIP3, and Hpla2. (b) Synchrotron X-ray diffraction patterns of ZnCoO powders (plasma-series) obtained at 95 K. (c) X-ray absorption near-edge structure (XANES) and (d) extended X-ray absorption fine structure (EXAFS) spectra of ZnCoO powders (HIP-series). Note that, in the X-ray absorption (XAS) experiments (XANES and EXAFS), we used ZnCoO powders containing 20 mol % Co.
