Variation of electrical resistance in single-crystalline Ni50Mn50−xInx alloys (x=14–16) upon martensitic transformation was investigated. In Ni50Mn35In15 with Tm∼295K, a negative magnetoresistance (MR) over 60% is attainable at moderate field strengths; Ni50Mn34In16 Tm∼190K, the MR can exceed 70% temperature approximately 100K. The significant change electric originates primarily from altered electronic structure, while large effect magnetic follows its ability to manipulate materials low Tm...

We study the electronic structures and magnetic properties of ${\mathrm{Mn}}_{2}\mathrm{Co}Z$ $(Z=\mathrm{Al},\mathrm{Ga},\mathrm{In},\mathrm{Si},\mathrm{Ge},\mathrm{Sn},\mathrm{Sb})$ compounds with ${\mathrm{Hg}}_{2}\mathrm{Cu}\mathrm{Ti}$-type structure using first-principles full-potential linearized-augmented plane-wave calculations. It is found that $Z=\mathrm{Al}$, Si, Ge, Sn, Sb are half-metallic ferrimagnet. Experimentally, we successfully synthesized...

The polymer-dielectric composite film is reported to obtain a hierarchical micro–nano structure. Composites exhibit excellent optical properties and their actual radiative cooling effect was tested in an outdoor environment.

Magnetic field-induced martensitic transformation was realized in Ni50−xCoxMn39Sb11 alloys. The partial substitution of Co for Ni has turned the antiferromagnetically aligned Mn moments starting material Ni50Mn39Sb11 into a ferromagnetic ordering, raising magnetization at room temperature from 8emu∕g NiMnSb to ∼110emu∕g Ni41Co9Mn39Sb11. In same quaternary sample, difference up 80emu∕g measured across transformation, and (T0=259K) could be lowered by 35K under field 10T. Also...

Heusler alloy Mn2NiGa has been developed by synthesizing a series of ferromagnetic shape memory alloys Mn25+xNi50−xGa25 (x=0–25). exhibits martensitic transformation around room temperature with large thermal hysteresis up to 50 K and lattice distortion as 21.3% quite high Curie 588 K. The martensite shows high-saturated field 2 T. excellent two-way behavior strain 1.7% was observed in the single crystal Mn2NiGa. magnetic-field-controlled effect created total 4.0% changed sign deformation...

Both experimental and theoretical studies have been carried out to study the structure magnetic properties of ${\mathrm{Mn}}_{2}\mathrm{NiGa}$ alloys. We found, instead forming $L{2}_{1}$ where both $A$ $C$ sites are occupied by Mn atoms, alloy favor a site is Ni atoms at $B$ sites. The electronic structures cubic austenite tetragonal martensite were calculated self-consistent full-potential linearized-augmented plane-wave (FP-LAPW) method. Austenite materials show ferrimagnetism due...

Effect of a magnetic field on martensitic transformation in the NiCoMnGa alloys was investigated. A field-induced reversible from phase low magnetization to parent high has been realized. The substitution Co for Ni atoms turned ordering partially antiferromagnetic ferromagnetic, resulting large change across transformation, which dramatically enhances driving force. temperature can be downshifted by at rate up 14K∕T Ni37Co13Mn32Ga18. Other mechanism details were also discussed.

Abstract Developing high‐performance infrared (IR) radiation materials with desired broadband emissivity, excellent thermal stability, and scalable fabrication processes is highly desirable for energy‐saving applications heat dissipation. However, it remains a grand challenge to concurrently meet these requirements in existing IR materials. Herein, high‐entropy (HE) approach employed advance the performance of spinel oxide. This strategy efficiently narrows bandgap due enhanced electron...

Developing advanced materials with a high-entropy concept is one of the hot trends in science. The configurational entropy can be tuned by introducing different atomic species, which also impart result excellent physical and chemical properties. In this work, we synthesized solid-solution oxide (Cu, Mn, Fe, Cr)3O4 simple scalable solid-phase synthesis method. We extensively investigated microstructure composition, indicating that has single-phase spinel structure. Simultaneously, reasonably...

A high entropy alloy nitride AlCrTaTiZrN nanofilm is employed to develop a novel duplex spectrally selective solar absorber coating, which leads scalable, highly efficient and cost-conscience structure.

Defects, boundaries, textures, tensile properties, fractographies, sub-grains, nano-oxide particles, and deformation twins in selective laser melted 316L stainless steel (SLM316LSS) were systematically characterized as functions of energy density. The defects, textures the as-built SLM316LSS shown to depend largely on applied power. porosity significantly decreased with increase power from 70 140 W (corresponding density 116.7 233.3 J/mm3), while exhibiting a slight range 140–280 (the...

With the improvements of large-scale parallel replication and automation for hot embossing machines, has become not only popular in laboratories but also possible attractive industry. Most difficulties polymer micro-molding are caused by demolding molds rather than filling them. Due to lack accurate analysis tools simulation demolding, it is difficult improve process or give design rules molds, which could harm further applications embossing. This paper gives our studies using LIGA mold...

Recent advances in high-entropy alloys have spurred many breakthroughs the fields of high-temperature materials and optical they provide incredible application potentialities for photothermal conversion systems. Solar-selective absorbers (SSAs), as key components, play a vital role efficiency service life. The most pressing problem with SSAs is their inconsistent performance, an instability constraint induced by thermal stress. A feasible method improving performance stability introduction...

The most recent advances in high-entropy materials provide impetus for the development of high-performance materials, simultaneously providing high-temperature robustness and excellent functional properties owing to high configurational entropy distorted lattices.

Solar and radiative warming are smart approaches to maintaining the human body at a metabolically comfortable temperature in both indoor outdoor scenarios. Nevertheless, existing textiles ineffective frigid climates because solar absorption of selective absorbing coating is significantly reduced when coated on rough textile surface. Herein, for first time, high-entropy nitrides based spectrally film (SSF) introduced common cotton through one-step magnetron sputtering method. The...

The variations in flavor substances across different varieties of steamed potatoes were determined by headspace-gas chromatography ion mobility spectrometry (HS-GC-IMS) combined with sensory evaluation. Results showed that 63 representative compounds, including 27 aldehydes, 14 alcohols, 12 ketones, 4 esters, 2 furans, 1 acid and others, together acted as contributors to the flavors potatoes. Analysis found species concentrations alcohols ketones six most abundant. In addition, furans also...