Abstract Studying cleavage properties of protective oxide scales is imperative to understand their fracture behaviour, since transgranular observed in many cases. The small thickness and polycrystalline structure such makes it difficult identify active planes directly from mechanical testing. To resolve this issue for Cr2O3, we present an approach experimentally through micro-cantilever bending...

B substituting O in antiferromagnetic Cr2O3 is known to increase the Néel temperature, whereas actual dopant site and corresponding functionality remains unclear due complicated local structure. Herein, A combination of electron energy loss spectroscopy first-principles calculations were used unveil structures doped thin films. was found form either magnetic active BCr4 tetrahedra or various in...

Owing to their combination of high hardness and increased fracture toughness, CrTaN coatings have recently gained increasing interest as suitable candidates for metal cutting applications. However, up now, the detailed mechanisms underlying oxidation this promising coating system are not thoroughly understood. Thus within work, evolution microstructure phase composition a cathodic arc evaporate...

First-principles calculations are used to explore the possibility of enhancing the Néel temperature T N of the magnetoelectric antiferromagnet Cr 2 O 3 by substitutional doping. We describe the electronic structure of transition metal (V, Ti, Mn, Fe, Co, and Ni) and anion (N and B) impurities and evaluate their effect on the exchange interaction. We find that, although transition-metal impuriti...

Magnetoelectric force microscopy (MeFM) is characterized as methodical tool for the investigation of antiferromagnetic domain states, in particular of the 180 ∘ variety. As reference compound for this investigation we use Cr 2 O 3 . Access to the antiferromagnetic order is provided by the linear magnetoelectric effect. We resolve the opposite antiferromagnetic 180 ∘ domain states of Cr 2 O 3 an...

The reaction of methanol with nearly-stoichiometric and oxygen-terminated surfaces of Cr2O3 was studied using thermal desorption spectroscopy and x-ray photoelectron spectroscopy. Dissociative adsorption of methanol occurs on the nearlystoichiometric surface and is attributed to the availability of cation-anion site pairs. An array of products including CH4, CH2O, CO, CO2, and H2 are produced a...

This study was conducted to determine true ileal AA digestibility coefficients and the endogenous AA outputs associated with barley samples for growing-finishing pigs using the regression analysis technique with dual digestibility markers. Six barrows, with 30.5 and 58.6 kg average initial and final BW, were fitted with a simple T-cannula at the distal ileum and fed six barley-based diets at cl...