4 results about "Thulium" patented technology

The invention belongs to the technical field of gain materials, and discloses bismuth-thulium co-doped gain glass with an efficient broadband and a preparation method of the bismuth-thulium co-doped gain glass. The gain glass is mainly prepared from the following raw materials: GeO2, SiO2, Bi2O3 and Tm2O3; the molar dosage of the GeO2 is 10 to 40 percent, and the molar dosage of the SiO2 is 60 to 90 percent; the use amount of Bi2O3 is 0.001-5% of the total molar weight of GeO2 and SiO2, and the use amount of Tm2O3 is 0.01-5% of the total molar weight of GeO2 and SiO2. The method is a gas suspension furnace method. The gain glass provided by the invention has continuous ultra-wideband luminescence of 1000-2000 nm, and covers O, E, S, C, L and U wave bands. The method provided by the invention improves the luminous intensity of the glass material. The bismuth-thulium co-doped gain glass material is used as a gain medium to be used in the fields of optical fiber amplifiers and lasers.

The invention belongs to the rare-earth permanent-magnet material technical field. To solve the problems of aeolotropic nanometer rare-earth permanent-magnet prepared by the prior art of much crackles, uneven magnetism and limitation to the shape and direction of magnetic texture, the invention leads to the blank at least containing hard magnetic phase amorphous or nanocrystal to be organized to form magnetic texture by temperature distortion; powder is then made, the material containing at least the nanocrystal powder is placed into a die and is pressed to be formed under magnetic field, theforming rough part is densified to prepare aeolotropic rare-earth permanent-magnet material. The material prepared by the method is aeolotropic rare-earth permanent-magnet material, at least comprising a transition thulium hard magnetic phase nanocrystal with magnetic texture which is arranged in parallel according to the applied magnetic field. Without crackles, the magnet can be in a shape of circular ring, tile, cuboid, cube or round bar with different slenderness ratio. The direction of the whole magnetic texture of magnet which is the magnetism charging direction can be designed according to requirements of the engineering. The remanence variation of magnet is less than 1.5 percent.