The high demand for flexible spintronics based on multiferroic heterostructures makes growing high‐quality flexible, functional oxides urgently, in which needs to be deposited on lattice‐matched substrates. In this paper, ultraflexible and malleable iron (Fe)/BaTiO3 (BTO) multiferroic heterostructures are demonstrated, showing a perfect crystallinity and hetero‐epitaxial growth. In terms of performance, they indicate good multiferroic properties and excellent bending tunability, as well as obvious magnetoelectric (ME) coupling effect. During the phase transformation from the rhombohedral phase to the orthorhombic phase of BTO layers in the heating process, a large ME coupling coefficient of 120 Oe °C−1 along the out‐of‐plane direction is obtained. This value keeps consistent in the phase‐field simulation of magnetic domain evolution, in which the biaxial compressive strain induced‐magnetoelastic anisotropy facilitates the magnetic easy axis of Fe layers to the [110] or [–1–10] direction. Besides, ultraflexible Fe/BTO heterostructures are found to have a 690 Oe ferromagnetic resonance (FMR) field shift along the out‐of‐plane direction under the flexible tuning (R = 5 mm). This work should pave a way toward flexible spintronic and functional devices with fast speed, portability, and low energy consumption.
A large out-of-plane FMR shift (180 Oe/550 MHz) was observed in flexible YIG/mica thin films, which for the first time involves a flexible tunable factor f(R) in the theoretical analysis.
This study was designed to investigate whether resuscitation with polymerized human placenta hemoglobin (PolyPHb) extended survival and the efficacy of hydroxyethyl starch (HES) in a rat model of hemorrhagic shock. After withdrawal of 39 ml of blood/kg, rats were randomly resuscitated with PolyPHb/HES or HES alone. Systemic, hemodynamic, and blood gas parameters, tissue oxygenation, and plasma erythropoietin (EPO) were evaluated. The results showed that resuscitation with PolyPHb/HES doubled the survival rate and maintained relatively high blood pressure and tissue oxygenation when compared with the results obtained using HES 130 alone. It is concluded that infusion of PolyPHb improves the resuscitative efficacy of HES in the present experimental conditions.
The inexorable trend of spintronics is to develop efficient spin-control methods. For example, photovoltaic spintronics driven by sunlight has great potential in energy-saving applications. Here, a ferromagnetic/PV heterojunction is prepared on Si-substrate as Ta (4 nm)/Co (1 nm)/ZnO (from 10 to 58 nm)/ PTB7-Th: PC 71 BM/Pt (3 nm) to study how visible light affected magnetic dynamics. A linewidth variation as high as 812.55 Oe is achieved by optimizing the thickness of ZnO film used to enhance the electron transfer. Due to the photovoltaic effect, reversible ferromagnetic resonance (FMR) linewidth switches are displayed, which is attributed to the 3d orbitals occupancy of Co induced the TMS contribution and inhomogeneous broadening. This work proposes a sunlight controllable magnetic damping heterostructure for developing fast, small, energy-efficient spintronics applications.
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