Size-dependence of the heat capacity and thermodynamic properties of hematite (α-Fe2O3)

Influence of geometrical structure on sorption isotherms of Jersey and yarns made of cotton at two temperatures

“…Every layer adsorbed is linked to the layer before, thus, the water links is decreasing until the water molecules fill the micro porosities. Then water became free and the capillaries diameters caused its displacements [51,52]. A comparison between the adsorption and desorption isotherms of Jersey knitted fabric and frayed yarns at the temperature of 25°C (Fig.…”

Control of spin‐reorientation transition in (0001) oriented α‐Fe2O3 thin film by external magnetic field and temperature

“…a). In the case that magnetic field strongly affects the transition temperature but barely modifies the heat capacity of both phases , a limiting value of Δ S ∼ Δ S tr should be expected , where Δ S tr is the structural transformation entropy. Beside this, to correlate the maximum entropy change determined by magnetic measurements with Δ S tr directly, the temperature range where the complete phase change is induced by an external magnetic field should be taken into account.…”

Heat capacity studies of the iron oxyhydroxides akaganéite (β-FeOOH) and lepidocrocite (γ-FeOOH)

“…Heat capacity studies of water on nanocrystalline TiO 2 polymorphs [46] and nanocrystalline hematite [47] show that the heat capacity of adsorbed water depends upon the proximity of the water to the surface of the nanoparticles. In the case of TiO 2 , the heat capacity was measured for nanoparticles with varying degrees of hydration, and it was found that the water on the less hydrated samples had a much lower heat capacity.…”