Monoclinic phase of the misfit-layered cobalt oxide (Ca0.85OH)1.16CoO2

Structure of the Monoclinic-Form Misfit-Layer Compound, (Ca0.85OH)2αCoO2 (α ≈ 0.57822)

“…The sample was confirmed to be pure enough for a precise structure analysis. The atomic composition of the phase is (Ca 0.85 OH) 1.16 CoO 2 , reported in a previous paper …”

“…Motivated by this hypothesis we searched for a new member to the layered cobalt oxide family. Recently, two new cobalt calcium hydroxides were synthesized for the first time using the solid-state reaction method at a high temperature and pressure. − These two new materials are (CaOH) 1.14 CoO 2 , which exhibits an orthorhombic lattice structure, and (Ca 0.85 OH) 1.16 CoO 2 , which exhibits a monoclinic lattice structure, where the orthorhombic phase is a polytype of the monoclinic phase.…”

“…In this study we report on the crystal structure of the recently discovered compound, (Ca 0.85 OH) 1.16 CoO 2 . The basic structure was initially studied using conventional X-ray and electron diffraction . It was reported that the compound includes a double layered Ca 0.85 OH structure block as the blocking layer, situated between the CoO 2 layers in the structure.…”

“…The structural modulation may affect carrier conduction through the potential modulation in the CoO 2 layer. It is, therefore, important to clarify the incommensurate modulated structure in detail, to better understand the observed physical properties . However, other researchers have yet to report a structural analysis of the material.…”

Improvement of the thermoelectric properties of [Bi1.68Ca2O4−δ]RS[CoO2]1.69 cobaltite by chimie douce methods

“…Their structure are described by two monoclinic subsystems alternating along the c axis [6][7][8][9][10][11][12][13][14][15]. A CoO 2 layer, formed by CoO 6 edge sharing octahedra, which is mainly responsible of the TE features and a rock salt (RS) block which is considered as an electron reservoir.…”