|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Large,low-field and reversible magnetostrictive effect in MnCoSi-based metamagnet at room temperature显示文摘TiNiSi-type MnCoSi-based alloys show large magnetostriction during the magnetic-field-induced metamagnetic transition.However,the high critical field required to drive the transition directly hinders their potential applications.In this work,we systematically investigate the tricritical behavior and magnetostrictive effect in substituted MnCoSi alloys.Replacing Si with Sb or In,Co with Fe or Cu,and Mn with Co,which can simultaneously reduce the critical field and the temperature of tricritical point,are explored.Among the substituted MnCoSi alloys,Mn_(0.983)Co_(1.017)Si displays a temperature of a tricritical point of 250 K and a room-temperature critical field of 0.60 T,which is the lowest up to now.Profited from these optimizations,a large reversible magnetostrictive effect under low field is successfully realized at room temperature.In a field of 1 T,the magnetostriction of Mn_(0.983)Co_(1.017)Si alloy is close to 1000 ppm.Besides,a strong relation between critical field and valence electron concentration is revealed in the transition-metal-substituted MnCoSi alloys.Our work greatly enhances the low-field magnetostrictive performance of MnCoSi-based alloys and make them be of interest in potential applications. | Jun Liu Yuanyuan Gong Fengqi Zhang Yurong You Guizhou Xu Xuefei Miao Feng Xu | 2021 | Journal of Materials Science & Technology2021，，17： | 1 |
| 2 | Enhanced reversibility of the magnetoelastic transition in(Mn,Fe)2(P,Si)alloys via minimizing the transition-induced elastic strain energy显示文摘Magnetocaloric materials undergoing reversible phase transitions are highly desirable for magnetic refrigeration applications.(Mn,Fe)_(2)(P,Si)alloys exhibit a giant magnetocaloric effect accompanied by a magnetoelastic transition,while the noticeable irreversibility causes drastic degradation of the magnetocaloric properties during consecutive cooling cycles.In the present work,we performed a comprehensive study on the magnetoelastic transition of the(Mn,Fe)_(2)(P,Si)alloys by high-resolution transmission electron microscopy,in situ field-and temperature-dependent neutron powder diffraction as well as density functional theory calculations(DFT).We found a generalized relationship between the thermal hysteresis and the transition-induced elastic strain energy for the(Mn,Fe)_(2)(P,Si)family.The thermal hysteresis was greatly reduced from 11 to 1 K by a mere 4 at.%substitution of Fe by Mo in the Mn_(1.15)Fe_(0.80)P_(0.45)Si_(0.55)alloy.This reduction is found to be due to a strong reduction in the transition-induced elastic strain energy.The significantly enhanced reversibility of the magnetoelastic transition leads to a remarkable improvement of the reversible magnetocaloric properties,compared to the parent alloy.Based on the DFT calculations and the neutron diffraction experiments,we also elucidated the underlying mechanism of the tunable transition temperature for the(Mn,Fe)_(2)(P,Si)family,which can essentially be attributed to the strong competition between the covalent bonding and the ferromagnetic exchange coupling.The present work provides not only a new strategy to improve the reversibility of a first-order magnetic transition but also essential insight into the electron-spin-lattice coupling in giant magnetocaloric materials. | Xuefei Miao Yong Gong Fengqi Zhang Yurong You Luana Caron Fengjiao Qian Wenhui Guo Yujing Zhang Yuanyuan Gong Feng Xu Niels van Dijk Ekkes Brück | 2022 | Journal of Materials Science & Technology2022，，8： | 1 |
| 3 | A Cloud-Fog Enabled and Privacy-Preserving IoT Data Market Platform Based on Blockchain显示文摘The dynamic landscape of the Internet of Things(IoT)is set to revolutionize the pace of interaction among entities,ushering in a proliferation of applications characterized by heightened quality and diversity.Among the pivotal applications within the realm of IoT,as a significant example,the Smart Grid(SG)evolves into intricate networks of energy deployment marked by data integration.This evolution concurrently entails data interchange with other IoT entities.However,there are also several challenges including data-sharing overheads and the intricate establishment of trusted centers in the IoT ecosystem.In this paper,we introduce a hierarchical secure data-sharing platform empowered by cloud-fog integration.Furthermore,we propose a novel non-interactive zero-knowledge proof-based group authentication and key agreement protocol that supports one-to-many sharing sets of IoT data,especially SG data.The security formal verification tool shows that the proposed scheme can achieve mutual authentication and secure data sharing while protecting the privacy of data providers.Compared with previous IoT data sharing schemes,the proposed scheme has advantages in both computational and transmission efficiency,and has more superiority with the increasing volume of shared data or increasing number of participants. | Yurong Luo Wei You Chao Shang Xiongpeng Ren Jin Cao Hui Li | 2024 | Computer Modeling in Engineering & Sciences2024，139，5： | 0 |
| 4 | The Feasibility Research on Reusing High Salinity Wastewater as a Plant Nutrient Medium for Plant Hydroponics in CELSS显示文摘The reuse of wastewater is a key problem in controlled ecological life support system(CELSS).In this study,the feasibility to reuse the treated wastewater(including sanitary wastewater and urine wastewater)as a plant hydroponic medium was verified.Two salt-tolerant plants,apium graveolens Linn(celery)and mesembryanthemum cordifolium L.F.(cordifolium),were cultivated with the reused medium or Hoagland nutrient solution,and the characteristics of crop growth,hydroponic medium composition,and elements absorption by plants were investigated.The results showed that the reused medium replenished with micronutrient elements could maintain the normal growth of cordifolium and celery crops.The biomass productivity of cordifolium cultivated by the recycled medium(121.53 g FW/strain)was higher than that cultivated by Hoagland nutrient solution(98.33 g FW/strain).The nutrient elements accumulation in plant dry mass indicated that plants could effectively utilize the recycled mineral elements in wastewater,and cordifolium exhibited better stability and adaptability to salt-induced environment.The absorption capacity of Na and Cl elements in cordifolium cultivated within the reused medium was the highest,which was 4.54%DW and 2.63%DW,respectively.This study demonstrated the feasibility to directly reuse domestic wastewater as the main ingredient for plant hydroponics,which could provide insights into design and operation of plant hydroponics system and water circulation system in CELSS. | Liangchang Zhang Yurong Xue You Wang Chengbo Zhan Weidang Ai Xingyan Wang | 2022 | Space(Science & Technology)2022，，1： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员