A multi-stimuli cooling cycle can be used to increase the cyclic caloric performance of multicaloric materials like Ni-Mn-In Heusler alloys. However, use a uniaxial compressive stress as an additional external stimulus magnetic field requires good mechanical stability. Improvement stability and strength by doping has been shown in several studies. is always accompanied grain refinement change t...

The planar oxygen isotope effect coefficient measured as a function of hole doping in the Prand La-doped YBa2Cu3O7 (YBCO) and the Ni-doped La1.85Sr0.15CuO4 (LSCO) superconductors quantitatively and qualitatively follows the form originally proposed by Kresin andWolf [Phys. Rev. B 49, 3652 (1994)], which was derived for polarons perpendicular to the superconducting planes. Interestingly, the inv...

Abstract Fe doping in Ni 2 Mn 1.5 In 0.5 results suppression of the martensitic phase via two contrasting routes. ? x , is converted to a strain glassy phase, while y cubic ferromagnetic at expense martensite. Careful studies magnetic and structural properties reveal presence impurity ? -(Fe,Ni) as reason for emergence non-ergodic when sought be doped Y/Z (Mn) sites X YZ Heusler alloy. Whereas ...

The strain glassy phase is produced by doping a small percentage of impurity in martensitic alloy. Its ground state conceived to consist nanodomains spatially separated from each other defect phase. present study, probing the local structure around Ni and Ti compositions ${\mathrm{Ni}}_{50+x}{\mathrm{Ti}}_{50\ensuremath{-}x}$, identifies that responsible for inhibiting long range ordering elast...

In order to examine to what extent the rigid-band-like electron doping scenario is applicable to the transition metal-substituted Fe-based superconductors, we have performed angle-resolved photoemission spectroscopy studies of Ba(Fe(1-x)Ni(x))(2)As(2) (Ni-122) and Ba(Fe(1-x)Cu(x))(2)As(2) (Cu-122), and compared the results with Ba(Fe(1-x)Co(x))(2)As(2) (Co-122). We find that Ni 3d-derived featu...

Cu-Ni castings and wrought pipes nominally contain 1% Fe to 2% Fe, which is added to improve the Cu-Ni alloy's erosioncorrosion resistance. After fabrication, Cu-Ni products are solution heat-treated to dissolve the iron uniformly andform a single-phase alloy. During welding, however, iron can precipitatefrom solid solution onto grain boundaries in the heat-alfected zones (HAZ). During seawater...

The optical properties of twinned single crystals of YBa2(Cu12xNix)3O61y have been determined for a nominally pure system and for Ni concentrations of x50.0075 and 0.014 with oxygen dopings of y50.60 ~underdoped! and 0.95 ~optimal! over a wide frequency range above and below Tc . The optical conductivity of the twinned materials shows a rapid increase in the residual conductivity at low frequen...

Surface modification of 600-µm-sized monodisperse gamma-alumina microspheres into magnesium–aluminum spinel, and co-impregnation-based loading Rh–Ni (0.46 wt% Rh, 9.03 Ni) were performed to synthesize catalysts for diesel-steam-reforming hydrogen. The intimate interactions between Rh Ni, the formation alloy, Rh-doping-induced decrease in particle size Ni determined. DFT calculations results rev...

The conversion reactions of pure NiF2 and the NiO-doped NiF2-C composite (NiO-NiF2-C) were investigated using X-ray absorption spectroscopy (XAS) and pair distribution function (PDF) analysis. The enhanced electronic conductivity of NiO-NiF2-C is associated with a significant improvement in the reversibility of the conversion reaction compared to pure NiF2. Different evolutions of the size dist...

Abstract Developing highly efficient and stable non-precious metal catalysts for water splitting is urgently required. In this work, we report a facile one-step molten salt method the preparation of self-supporting Ni-doped Mo 2 C on carbon fiber paper (Ni-Mo CB /CFP) hydrogen evolution reaction (HER). The effects nickel nitrate concentration phase composition, morphology, electrocatalytic HER ...