美国阿贡国立实验室的科研人员研制成功一种叫做偏振中子反射计(Plearized-neutron reftectometer)的测试仪。这种使用中子束测试磁性材料表面微层磁场的仪器已被用来测量新型磁记录材料对磁场的响应情况。阿贡国立实验室对此仪器的评价是:可使我们掌握更多更准确的有关磁性记 Researchers at the Argonne National Laboratory in the United States have succeeded in developing a tester called the Plearized-neutron reftectometer. The instrument, which uses neutron beams to test micro-magnetic fields on the surface of magnetic materials, has been used to measure the response of new magnetic recording materials to magnetic fields. Argonne National Laboratory evaluation of this instrument is: allows us to grasp more and more accurate on the magnetic mind