MARCIN NABIALEK, BARTLOMIEJ JEZ, KINGA JEZ INFLUENCE OF THE PROCESS FOR OBTAINING MASSIVE AMORPHOUS MATERIALS ON THE DEFECTS OF THE STRUCTURE IN THE ALLOY FE61+XCO10-XY8W1B20 , WHERE X = 0 OR 1
As part of the work, a rapid cooled alloy was produced with the chemical composition Fe61+xCo10-xY8W1B20, where: x = 0 or 1 using two methods, suction in and injecting the molten alloy into the copper mold. The material was obtained in the form of 10 mm x 5 mm x 0.5 mm plates. Studies on the structure of the obtained alloys were carried out using X-ray diffraction. Obtained X-ray diffraction images are typical for amorphous materials. Using the vibration magnetometer, static magnetic hysteresis loops and primary magnetization curves were measured. The produced samples are characterized by a saturation value above 1T and a coercive field value below 200 A/m. Based on the theory of H. Kronmüller, numerical analysis of the curves of the original magnetization was carried out. It has been found that the process of magnetizing the produced materials has defects of the amorphous structure in the form of pseudo-location dipoles and free volumes. In addition, the spin wave stiffness parameter was determined.
Keywords: amorphous alloy, chemical composition, defects, static magnetic hysteresis, X-ray diffraction