Exchange-Biased Quantum Anomalous Hall Effect.

The quantum anomalous Hall (QAH) effect is characterized by a dissipationless chiral edge state with a quantized Hall resistance at zero magnetic field. Manipulating the QAH state is of great importance in both the understanding of topological quantum physics and the implementation of dissipationless electronics. Here, the QAH effect is realized in the magnetic topological insulator Cr-doped (Bi,Sb) Te (CBST) grown on an uncompensated antiferromagnetic insulator Al-doped Cr O .

Effect of Pravastatin as an Adjunctive Therapeutic for Mitral Insufficiency with Hyperlipidemia in a Dog.

Pravastatin (PS) has been found to increase left ventricle (LV) expansion capacity and decrease LV constriction and left atrial pressure in healthy dogs. To date, there are no available reports on the effects of PS in dogs with hypercholesterolemia with chronic heart failure (CHF). This case report demonstrates a successful long-term treatment plan using PS in a dog suffering from mitral insufficiency with hyperlipidemia.

Parasitic Magnetism in Magnetoelectric Antiferromagnet.

Parasitic magnetism plays an important role in magnetoelectric spin switching of antiferromagnetic oxides, but its mechanism has not been clearly investigated. Unlike the widely obtained surface boundary magnetization in magnetoelectric CrO antiferromagnet, we previously reported that Al doping could produce volume-dependent parasitic magnetism () in CrO with the remaining magnetoelectric effect and antiferromagnetic properties. In this work, we systematically investigated the magnetic properties of in CrO through its different exchange coupling characteristics with the ferromagnet at various conditions.

Observation of perpendicular exchange bias in an Ir-doped FeO/Co ultrathin film system.

In this work, we investigated the temperature dependence of interface exchange coupling in an Ir-doped FeO/Co system with variations in the Ir-FeO thickness. Low-temperature perpendicular exchange bias was observed in the samples with an Ir-FeO thickness of 5 nm or less, when it cooled from 360 K in an external magnetic field of 1 T perpendicular to the sample surface. For 5 nm-thick Ir-FeO, a maximum exchange bias value of 1200 Oe was obtained at 200 K.

The dependence of nano-contact magnetoresistance on the bulk scattering spin asymmetry in CoFe alloys with oxidation impurities.

Nano-contact magnetoresistance (NCMR) spin-valves (SVs) using an AlO nano-oxide-layer (NOL) have numerous nanocontacts in the thin AlO oxide layer. The NCMR theoretically depends on the bulk scattering spin asymmetry ([Formula: see text]) of the ferromagnetic material in the nanocontacts. To determine the relationship between NCMR and [Formula: see text], we investigated the dependence of NCMR on the composition of the ferromagnetic material CoFe.