نتایج جستجو برای: ni mn ga
تعداد نتایج: 120807 فیلتر نتایج به سال:
concentrations of six heavy metals including cr, mn, ni, pb, v and zn were determined in topsoil (from 47 grid cells), surface water (4 streams) and groundwater (8 wells and 4 qanats) from an agriculturalarea located at south part of the iranian capital, near the tehran oil refinery. concentrations of the elementswere measured using flame and flameless atomic absorption spectrometry. based on t...
High-speed actuators are greatly required in this decade due to the fast development of future technologies, such as Internet-of-Things (IoT) and robots. The ferromagnetic shape memory alloys (FSMAs), whose change could be driven by applying an external magnetic field, possess a rapid response. Hence, these materials considered promising candidates for applications technologies. Among FSMAs, Ni...
We report on a systematic study of optical properties of (Ga,Mn)As epilayers spanning the wide range of accessible Mn(Ga) dopings. The material synthesis was optimized for each nominal Mn doping in order to obtain films which are as close as possible to uniform uncompensated (Ga,Mn)As mixed crystals. We observe a broad maximum in the mid-infrared absorption spectra whose position exhibits a pre...
Components made of alloys with a magnetic shape memory (MSMA) are not commonly used in industrial systems or prototype solutions. The reasons behind this include the cost and implementation difficulties attached to MSMA alloys synthesis technology. The article presents the results of a prototype actuator in which the active element is a rod made of Ni-Mn-Ga alloy and with dimensions of 2x1x20 m...
Ga samples could not be determined because of the structural phase transition, the Curie temperature decreased with increasing x in Mn Ga. The maximum magnetization of 57 emu/g (300 emu/cm) and the coercivity of 6.5 kOe were measured in the Mn Ga and Mn Ga ribbons, respectively.
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