论文部分内容阅读
薄带状强铁磁氧化物玻璃已能制造。通过在快速旋转的金属滚轮上迅速淬冷非铁磁化合物BiFeO_3(钙钛矿结构,TN=645k)和ZnFeO_4(尖晶不结构、TN=9.5K)的液态混合物而得到。用这种方法获得的玻璃,在屋里温度接近450K时,可以认为是铁磁的,而不是非铁磁的。该材料的磁饱和强度取决于组成,当组成为(Bi_2O_3)_(0.3)(ZnO)_(0.2)(Fe_2O_3)_(0.5)时,室温下可达到17emu/y。当温度近似居里温度时该产物的磁化强度对温度曲线与标准的铁磁性有区别。当退火温度高于结晶温度(大约700K)玻璃形
Thin ribbon-shaped ferromagnetic oxide glass has been made. Obtained by rapidly quenching a liquid mixture of non-ferromagnetic compounds BiFeO_3 (perovskite structure, TN = 645k) and ZnFeO_4 (spinel not structure, TN = 9.5K) on a rapidly rotating metal roller. The glass obtained in this way can be considered ferromagnetic instead of non-ferromagnetic when the temperature in the room approaches 450K. The magnetic saturation strength of the material depends on the composition. When the composition is (Bi 2 O 3) _ (0.3) (ZnO) _ (0.2) (Fe_2O_3) _ (0.5), the material can reach 17 emu / y at room temperature. The product’s magnetization vs. temperature profile differs from the standard ferromagnetism at temperatures near the Curie temperature. When the annealing temperature is higher than the crystallization temperature (about 700K) glassy