Novel magnetic materials with non-trivial magnetic structures have led to exotic magnetic transport properties and significantly promoted the development of spintronics in recent years.Among them is the Crx Tey family...Novel magnetic materials with non-trivial magnetic structures have led to exotic magnetic transport properties and significantly promoted the development of spintronics in recent years.Among them is the Crx Tey family,the magnetism of which can persist above room temperature,thus providing an ideal system for potential spintronic applications.Here we report the synthesis of a new compound,Cr_(0.82)Te,which demonstrates a record-high topological Hall effect at room temperature in this family.Cr_(0.82)Te displays soft ferromagnetism below the Curie temperature of 340 K.The magnetic measurement shows an obvious magneto-crystalline anisotropy with the easy axis located in the ab plane.The anomalous Hall effect can be well explained by a dominating skew scattering mechanism.Intriguing,after removing the normal Hall effect and anomalous Hall effect,a topological Hall effect can be observed up to 300 K and reaches up to 1.14μΩ·cm at 10 K,which is superior to most topological magnetic structural materials.This giant topological Hall effect possibly originates from the noncoplanar spin configuration during the spin flop process.Our work extends a new Cr_(x)Te_(y) system with topological non-trivial magnetic structure and broad prospects for spintronics applications in the future.展开更多
针对遗传算法解决车间作业调度问题时存在早熟收敛的缺点,采用一种新型进化算法——DNA进化算法解决车间作业调度问题.将算法从连续优化问题拓展用于解决离散优化问题,并将其成功地应用于Job shop生产调度.采用了著名的M u th和T hom p...针对遗传算法解决车间作业调度问题时存在早熟收敛的缺点,采用一种新型进化算法——DNA进化算法解决车间作业调度问题.将算法从连续优化问题拓展用于解决离散优化问题,并将其成功地应用于Job shop生产调度.采用了著名的M u th和T hom pson标准问题FT 10进行了验证.仿真结果表明,与遗传算法相比,该算法简单有效,不仅具有很好的求解性能,而且具有更快的收敛速度和全局搜索能力.展开更多
基金supported by the National Key R&D Program of China(Grant No.2022YFA1602603)the Basic Research Program of the Chinese Academy of Sciences Based on Major Scientific Infrastructures(Grant No.JZHKYPT-2021-08)+1 种基金the National Natural Science Foundation of China(Grant No.12104459)the Excellent Program of Hefei Science Center CAS(Grant No.2021HSC-CIP016)。
文摘Novel magnetic materials with non-trivial magnetic structures have led to exotic magnetic transport properties and significantly promoted the development of spintronics in recent years.Among them is the Crx Tey family,the magnetism of which can persist above room temperature,thus providing an ideal system for potential spintronic applications.Here we report the synthesis of a new compound,Cr_(0.82)Te,which demonstrates a record-high topological Hall effect at room temperature in this family.Cr_(0.82)Te displays soft ferromagnetism below the Curie temperature of 340 K.The magnetic measurement shows an obvious magneto-crystalline anisotropy with the easy axis located in the ab plane.The anomalous Hall effect can be well explained by a dominating skew scattering mechanism.Intriguing,after removing the normal Hall effect and anomalous Hall effect,a topological Hall effect can be observed up to 300 K and reaches up to 1.14μΩ·cm at 10 K,which is superior to most topological magnetic structural materials.This giant topological Hall effect possibly originates from the noncoplanar spin configuration during the spin flop process.Our work extends a new Cr_(x)Te_(y) system with topological non-trivial magnetic structure and broad prospects for spintronics applications in the future.
文摘针对遗传算法解决车间作业调度问题时存在早熟收敛的缺点,采用一种新型进化算法——DNA进化算法解决车间作业调度问题.将算法从连续优化问题拓展用于解决离散优化问题,并将其成功地应用于Job shop生产调度.采用了著名的M u th和T hom pson标准问题FT 10进行了验证.仿真结果表明,与遗传算法相比,该算法简单有效,不仅具有很好的求解性能,而且具有更快的收敛速度和全局搜索能力.