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Characteristics of superconducting FeSe0.5Te0.5 hot electron bolometer are reported. The superconducting FeSe0.5Te0.5 film is grown by pulsed laser deposition on MgO substrate, and its transition temperature and complex conductivity indicate that the film quality is good enough for hot electron bolometer. We then fabricate hot electron bolometer based on the superconducting FeSe0.5Te0.5 film, and...
Finemet-type nanocrystalline soft magnetic alloys have shown attractive magnetic properties[1-3]. However, due to the relatively low Curie point of the residual amorphous matrix, they cannot be used at high temperature[4-5]. Partial substitution of Co for Fe was carried out to meet the desire for high temperature magnetic properties[6-7]. When Co was added to the FeSiBNbCu alloys, although the Curie...
MnTe is a kind of antiferromagnetic semiconductor with Néel temperature (TN) of 307 K [1]. Mn1−xCrxTe was investigated as diluted magnetic semiconductor [2]. The structure, magnetic and transport properties of MnTe [3] and Mn1−xCrxTe [4,5] films were investigated. In these previous works, some of the films represent different characteristic from the bulk ones, such as ferromag-netism at room temperature...
Finemet alloys exhibit superior soft magnetic properties with high initial permeability (μ), low coercivity and low core loss, which attracted a great deal of attention [1]. However, their application is limited to the temperature close to the Curie point of an amorphous matrix, Tcam, because the intergranular magnetic coupling is usually interrupted by the paramagnetic amorphous matrix. As the result,...
Due to excellent magnetic properties, sintered Nd-Fe-B magnets have been used in various fields for many years [1, 2]. However, Nd-Fe-B magnets show a relatively low temperature stability of performance which is a main disadvantage for the application in some special cases. In order to improve the temperature stability of performance, Co, Dy and Tb elements have been added to the Nd-Fe-B sintered...
Wavelength and directional hysteresis due to increasing and decreasing current and temperature have been investigated. Measurements indicate that lasing direction hysteresis associated with changes in injection current can be attributed to the resulting shift in the linear gain peak which is due to the change in device temperature. Interaction between the linear gain spectrum and the asymmetric nonlinear...
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