The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The magnetocaloric effect (MCE) is an intrinsic magneto-thermodynamic property of all magnetic materials due to the coupling of magnetic sublattice with an external magnetic field, which affects the magnetic part (ΔSM) of the total entropy change (ΔST) [1]. However, the co-occurrence of structural and magnetic transitions (i.e., magnetostructural transformation), as occurs in Ni-Mn-Ga Heusler alloys...
Recently, due to the short supply of rare earth element, there is a great demand in developing the rare-earth-free permanent magnets with giant magnetic anisotropy. Among the rare-earth-free permanent magnetic materials of current interest, MnxGa alloys are potential candidates as permanent magnets [1]. In the MnxGa alloys, the ferromagnetic L10-MnGa phase and ferrimagnetic D022-Mn-3Ga phase are theoretically...
In this letter, we investigate the effects of annealing and p-doping on the two-state competition of 1.3 μm InAs/GaAs quantum-dot (QD) lasers. By analyzing the modal gain competition from below-ground-state (GS) to above-excited-state (ES) thresholds, we found that: 1) the onset of ES lasing can be significantly delayed to a higher injection current with optimum annealing conditions; and 2) under...
These The paper reports a development and implementation of light trapping based on light scattering from plasmonic metal nanoparticles. The nanoparticles were formed on the surface of planar polycrystalline Si thin-film solar cells by annealing of a precursor Ag film. The light absorption by the cells and resulting photocurrent enhancement is maximised by optimising the design of the nanoparticle...
In this paper, we first demonstrate effects of thermal annealing on subthreshold slope in AlGaN/GaN HEMTs. Then, based on the temperature dependence of subthreshold slope, we introduce a new method to estimate interface trap density in these devices.The understanding of this interface trap is critical to optimize the gate modulation efficiency of these transistors and maximize their high frequency...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.