This work reports a comprehensive investigation of the temperature dependence of the interlayer exchange coupling in the antiferromagnetic coupling of a FeNi/Ru/FeNi trilayer sample using broadband ferromagnetic resonance. The temperature dependence of the interlayer exchange coupling fields is obtained by applying Kittel fitting to the systematic frequency dependence of the resonance field between the acoustic and optic modes and by assuming equal effective magnetization of the two resonance modes. It is found that the value of the exchange coupling field increases with decreasing temperature, showing excellent agreement with the existing theories regarding the spacer and interface and the thermal excitations of the spin wave contributions to the temperature dependence. Additionally, the temperature dependence of the Gilbert damping coefficient was investigated for the acoustic and optic modes, where the optic mode damping coefficient was markedly different from and greater than of the acoustic mode. These results provide important information that will be helpful in the understanding of antiferromagnetic resonance.

Generation and manipulation of spin current are the cores of spintronic devices, which are intensely pursued. Heavy metals with strong spin–orbit coupling are commonly used for the generation of spin current, but are incompatible with the mass production of devices, and the polarization of spin current is limited to be in‐plane. Here, it is shown that the spin current with strong out‐of‐plane polarization component can be generated and transmitted in Ni81Fe19/Cu–CuOx bilayer with sideways and top oxidizations. The charge‐to‐spin current conversion efficiency can be enhanced through the spin currents consisting of both out‐of‐plane polarization (σz) and in‐plane polarization (σy) induced by spin‐vorticity coupling. Such a spin current is demonstrated to be closely related to the lateral oxidization gradient and can be controlled by changing the temperatures and times of annealing. The finding here provides a novel degree of freedom to produce and control the spin current in spintronic devices.

The in-plane effective 90° magnetization rotation of Co2FeAl thin film grown on PMN-PT substrate induced by the electric field is investigated at room temperature. The magnetic hysteresis loops under different positive and negative electric fields are obtained, which reveals remanent magnetization can be mediated by the electric field. Moreover, under positive electric fields, the obvious 90° magnetization rotation can be observed, while remanent magnetization is nearly unchanged under negative electric fields. The result is consistent with the electric field dependence of effective magnetic field, which can be attributed to the piezostrain effect in Co2FeAl/PMN-PT structure. In addition, the piezostrain-mediated 90° magnetization rotation can be demonstrated by the result of resonance field changing with electric field in the measurement of ferromagnetic resonance, which is promising for the design of future multiferroic devices.

Background: Ultra-high-resolution computed tomography (U-HRCT) has improved image quality for displaying the detailed characteristics of disease states and lung anatomy. The purpose of this study was to retrospectively examine whether U-HRCT target scanning in the lateral or oblique body position (protocol G scan) could predict histological invasiveness of pulmonary adenocarcinoma manifesting as pure groundglass nodules (pGGNs). Methods: From January 2015 to December 2016, 260 patients with 306 pathologically confirmed pGGNs who underwent preoperative protocol G scans were retrospectively reviewed and analyzed. The U-HRCT findings of preinvasive lesions [atypical adenomatous hyperplasias (AAH) and adenocarcinomas in situ (AIS)] and invasive pulmonary adenocarcinomas [minimally invasive adenocarcinomas (MIA) and invasive adenocarcinomas (IAC)] were manually compared and analyzed using orthogonal multiplanar reformation (MPR) images. The logistic regression model was established to determine variables that could predict the invasiveness of pGGNs. Receiver operating characteristic (ROC) curve analysis was performed to evaluate their diagnostic performance. Results: There were 213 preinvasive lesions (59 AAHs and 154 AISs) and 93 invasive pulmonary adenocarcinomas (53 MIAs and 40 IACs). Compared with the preinvasive lesions, invasive adenocarcinomas exhibited a larger diameter (13.5 vs.

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