Magnetic Structure of CoO

Strain and structure driven complex magnetic ordering of a CoO overlayer on Ir(100).

We investigate the magnetic ordering in the ultrathin c(10×2) CoO(111) film supported on Ir(100) on the basis of ab initio calculations. We find a close relationship between the local structural properties of the oxide film and the induced magnetic order, leading to alternating ferromagnetically and antiferromagnetically ordered segments. While the local magnetic order is directly related to th...

Valence-band electronic structure of Co3O4 epitaxy on CoO(100)

The magnetic field and pressure dependence of the magnetic ordering transition in Na x CoO

The magnetic field and pressure dependence of the magnetic ordering transition in Na x CoO 2 Abstract. We have measured the magnetic field (H≤90 kOe) and pressure (P≤10 kbar) dependence of the magnetic ordering temperature, T mag , in single crystal samples of Na x CoO 2 for a range of Na concentrations (0.60≤x≤0.72). We show that in zero field, T mag remains constant with decreasing x before m...

Crystal Structure of the Superconducting Layered Cobaltate Na X Coo 2 ·yd 2 O Crystal Structure of the Superconducting Layered Cobaltate Na X Coo 2 ·yd 2 O

We have used electron diffraction and neutron powder diffraction to elucidate the structural properties of superconducting Na x CoO 2 ·yD 2 O over a wide compositional range. Our measurements show that superconducting samples exhibit a number of supercells ranging from 1 3 a * to 1 15 a * , but the predominant modulation, observed also in the neutron data, is a double hexagonal cell with dimens...

NUCLEAR MAGNETIC RESONANCE STUDY OF THE STRUCTURE OF GLYOXALDIHYDRAZONE

Study of the nuclear magnetic resonance spectra of glyoxaldihydrazone in dimethylsulfoxide and deuterochlorofonn leads to the conclusion that this compound exists predominantly in non-chelate structure