– A model of magnetic interactions in the ordered ferromagnetic FePt is proposed on the basis of first-principles calculations of non-collinear magnetic configurations and shown to be capable of explaining recent measurements of magnetic-anisotropy energy (MAE). The site (Fe,Pt) resolved contributions to the MAE have been distinguished with small Fe easyplane and large Pt easy-axis terms. This ...

As high-average power ultrafast lasers become increasingly available for nonlinear conversion, the temperature dependence of material properties crystals becomes relevant. Here, we present temperature-dependent THz complex refractive index measurements organic crystal BNA over a wide range temperatures from 300 K down to 80 frequencies up 4 first time. Our show that whereas has only minor devia...

The suspended electrothermal polysilicon micro beams generate displacements and forces by thermal buckling effects. In the previous electro-thermal and thermo-elastic models of suspended polysilicon micro beams, the thermo-mechanical properties of polysilicon have been considered constant over a wide rang of temperature (20900°C). In reality, the thermo-mechanical properties of polysilicon depe...

The scintillation yield, scintillation decay, and x-ray excited emission of pure LaCl(3) was studied as a function of temperature between 80 and 600 K. Two broad band emissions centered around 325 nm and 400 nm were identified and correlated to emissions from two localized exciton states named STE(1) and STE(2), respectively. Different temperature dependences were observed for the short and lon...

Temperature-dependent in situ W L3-edge X-ray absorption spectroscopy has been performed at 20–500 ‡C to investigate the geometric environment and electronic structure of tungsten upon the transformation of electrochromic peroxopolytungstic acid to tungsten trioxide. The temperature-dependent variation of the coordination number and bond distance of the nearest (W–O) sphere reveals that the per...

This is a study on the development of novel multi-material topology optimization scheme considering temperature-dependent thermoelastic properties for engineering structure design. Two cases, three-point-bending beam under uniform temperature field and cantilever non-uniform field, are investigated effects optimization. The proposed compared with two existing approaches: conventional results sh...