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Understanding the magnetization reversal and temperature characteristics of synthetic antiferromagnets (SAFs) is helpful for optimizing the magnetic properties. In this study, a series of synthetic antiferromagnets with perpendicular magnetic anisotropy are deposited. The four stable magnetic states of the SAF are determined by the mutual alignment of magnetic moments in the layers and are controlled by both the magnetic interlayer exchange interaction and Zeeman energy. First order reversal curves were employed to investigate magnetization reversal behaviors and distinguish between reversible and irreversible components. An innovative approach to enhancing the antiferromagnetic coupling field and thermal stability involves introducing a Ru insertion and increasing the thickness of the adjacent magnetic layer. [ABSTRACT FROM AUTHOR]

Comprehensive Summary A series of nickel‐doped copper tungstate/oxygen‐rich TiO2 heterojunction‐constructed composites of xNi‐CuWO4/OTiO2 were successfully prepared to demonstrate the enhancement of the visible‐light photoactivity through promoting the photogenerated charge carrier separation efficiency. Of all these composites, 0.2Ni‐CuWO4/OTiO2 exhibits excellent and stable visible light photoactivity for the photooxidative coupling of benzylamine to the corresponding N‐benzyl‐1‐phenymethanimine (BPMI) in air atmosphere. The conversion of benzylamine and the selectivity to BPMI reach 97% and 99%, respectively. The catalyst shows good cyclability with the conversion of benzylamine decreasing just by 22% after being repeated six times with the well‐maintained selectivity of BPMI. The composite also exhibits excellent photo‐bactericidal ability, which greatly inhibits the reproducing of both the Gram‐positive bacteria (e.g., S. epidermidis) and Gram‐negative bacteria (e.g., E. coli). [ABSTRACT FROM AUTHOR]

Comprehensive Summary A series of nickel‐doped copper tungstate/oxygen‐rich TiO2 heterojunction‐constructed composites of xNi‐CuWO4/OTiO2 were successfully prepared to demonstrate the enhancement of the visible‐light photoactivity through promoting the photogenerated charge carrier separation efficiency. Of all these composites, 0.2Ni‐CuWO4/OTiO2 exhibits excellent and stable visible light photoactivity for the photooxidative coupling of benzylamine to the corresponding N‐benzyl‐1‐phenymethanimine (BPMI) in air atmosphere. The conversion of benzylamine and the selectivity to BPMI reach 97% and 99%, respectively. The catalyst shows good cyclability with the conversion of benzylamine decreasing just by 22% after being repeated six times with the well‐maintained selectivity of BPMI. The composite also exhibits excellent photo‐bactericidal ability, which greatly inhibits the reproducing of both the Gram‐positive bacteria (e.g., S. epidermidis) and Gram‐negative bacteria (e.g., E. coli). [ABSTRACT FROM AUTHOR]

• A type II heterojunction was formed between surface of ZnIn 2 S 4 and ZnO. • Efficient oxidative coupling of benzylamine was realized under visible light. • No extra oxygen atmosphere was required. A series of Zn x In y S z was synthesized by hydrothermal method, and the corresponding Zn x In y S z @ZnO composites with the internal type II heterojunctions were prepared by solvent assisted interface. It could be observed in SEM and TEM images of ZnIn 2 S 4 @ZnO that ZnIn 2 S 4 present a petal-like sphere composed ofnanosheets with nano-fragments of ZnO attached on its surface. The results offluorescence spectra and electrochemical impedance spectroscopy indicated that theformation of type II heterojunctions within ZnIn 2 S 4 @ZnO composites significantly promotedthe separation of photocarriers. Therefore, ZnIn 2 S 4 @ZnO delivered excellent catalyticperformance for oxidative coupling of benzylamine. Under visible-light irradiation of 2 h, the conversion of benzylamine is as high as 96%, and the catalytic performance is still very steady after several cycles. It has not been reported that such a high conversion can be achieved in such a short period of time. Another advantage is that the coupling reaction does not require additional oxygen atmosphere and can be carried out in air condition, endowing this process with the feature of easier to be operated. This work provids an effective method for oxidative coupling of benzylamine through environmentally friendly way.This work provided an effective method for coupling of benzylamine environmentally friendly way. Zn x In y S z and Zn x In y S z @ZnO composite photocatalysts were synthesized by hydrothermal and solvent assisted interface reaction for the oxidative coupling of benzylamine. Of all the photocatalysts ZnIn 2 S 4 @ZnO showed the most excellent photocatalytic activity for the coupling. It found ZnIn 2 S 4 @ZnO formed type II heterojunction and realized the efficient separation of electrons and holes in the catalytic process. The conversion of benzylamine reached 96% only after 2 h of visible light irradiation. This reaction does not require additional oxygen atmosphere and can be carried out in air condition. [Display omitted] [ABSTRACT FROM AUTHOR]