The electronic and magnetic properties of the hypothetical compounds of MC (M=Al, Ga and In) are investigated by using first-principle calculations and pseudopotential plane wave self-consistent field method based on density functional theory. In order to find the most stable phase of MC (M=Al, Ga and In), we study them in zinc-blende (ZB), rocksalt (RS), wurtzite and NiAs crystal structures. W...

In this review we give an overview about the current state-of-knowledge of the magnetic field in sunspots from an observational point of view. We start by offering a brief description of tools that are most commonly employed to infer the magnetic field in the solar atmosphere with emphasis in the photosphere of sunspots. We then address separately the global and local magnetic structure of suns...

The paper reports evidence that the multi-spin-axis magnetic structure proposed in 1964 by van Laar is realized antiferromagnetic CoO. This tetragonal spin arrangement produces both strong and weaker monoclinic distortion experimentally observed this material. to be a “monoclinic-like” of array oxygen atoms, comparable with rhombohedral-like atoms recently present NiO MnO. monoclinic-like has n...