Investigation of variable range hopping and dielectric relaxation in GdCrO orthochromite perovskites.

This study investigates the structural, electrical, and dielectric properties of GdCrO (GCO) compounds. X-ray diffraction analysis confirmed the formation of the perovskite phase of GCO, crystallizing with the space group. Scanning electron microscopy (SEM) was employed to examine the morphology and chemical composition of the powder, ensuring compound homogeneity, while transmission electron microscopy (TEM) provided insights into the internal structure and finer morphology of the GCO sample.

Potassium cerium(III) bis(sulfate) monohydrate, KCe(SO4)2.H2O.

The crystal structure of potassium cerium(III) bis(sulfate) monohydrate, KCe(SO4)2.H2O, is built up from irregular independent SO4 tetrahedra, CeO9 polyhedra in the form of distorted tricapped trigonal prisms and K+ ions. Hydrogen bonding between the free water molecule and sulfate groups supplement the ionic bonds characteristic of the rest of the structure.