A D V A N C E D M A T E R I A L S & P R O C E S S E S | S E P T E M B E R 2 0 2 2 9 excellent mechanical performance with stiffness of 97.9 MPa, strength of 22.5 MPa, elongation at break of 1470%, and toughness of 159.3 MJ.m-3. After 30 minutes of self-healing, the toughness of the synthesized polymer can recover to 92%, indicating a significantly rapid self-healing ability. The extensive H-bonds provide the polymer with excellent adhesion as the lap-shear strength can reach up to 20.7 MPa when bonded with iron plates, the highest value reported for hot-melt adhesives. Potential applications include energy storage, flexible sensors, and intelligent displays, as well as underwater marine uses such as anticounterfeiting, encapsulation, and adhesion. https://english. cas.cn. HALF-METAL EXHIBITS ZERO MAGNETIZATION A research group at TohokuUniversity’s Institute for Materials Research, Japan, reports successfully synthesizing a “half-metal” material, achieving a rare accomplishment in the pursuit of zero magnetization. Half-metals can dramatically enhance the performance of electronic devices. This is due to their 100% spin polarization, which allows them to behave as metals in one spin direction, and insulators/semiconductors in the other. Most successful instances of half-metals are ferromagnetic, meaning their spin arrangement is aligned. A n t i f e r r o - magnetic-like half- metals, where the spin aligns in an antiparallel nature, are desirable because no magnetic stray field candisturb it, even if integrated at Spin arrangement of magnetic moments in ferromagnetic, antiferromagnetic, and ferrimagnetic materials. Courtesy of Rie Umetsu. high density. To date, only two cases of these antiferromagnetic-like half-metals have been reported. Following specific development guidelines, the team created a compound consisting of iron, chromium, and sulfur. The new material completely loses its magnetization at low temperatures. The researchers believe the results of this study will initiate new innovations in the spintronics field. www.tohoku.ac.jp/en.
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