Magnetic behavior of superconductor/ferromagnet superlattices
Magnetic behavior of superconductor/ferromagnet superlattices
复制标题
超导体/铁磁体超晶格的磁性行为
DOI：
--
复制
发表时间：
2007
期刊：
影响因子：
--
通讯作者：
J. Guimpel
中科院分区：
文献类型：
--
作者：
C. Monton;F. D. L. Cruz;J. Guimpel
本文研究了超导/铁磁超晶格的电磁响应。直流磁化强度作为Co层厚度、外加磁场${H}_{a}$和温度的函数进行测量。对于非常薄的钴层，没有铁磁性检测和观察到的响应基本上是一个集合的非耦合铌层。当Co层足够厚以建立铁磁性时，在场冷磁化测量之前，Co层在与${H}_{a}$平行或反平行的方向上磁饱和。在这种情况下，发现其他非耦合Nb层的磁响应取决于${H}_{a}$和杂散场。
A study of the electromagnetic response of superconductor/ferromagnet $mathrm{Nb}∕mathrm{Co}$ superlattices is presented. The dc magnetization is measured as a function of Co layer thickness, applied field ${H}_{a}$, and temperature. For very thin Co layers, no ferromagnetism is detected and the observed response is essentially that of a collection of uncoupled Nb layers. When the Co layer is thick enough for ferromagnetism to be established, prior to the field-cooled magnetization measurements, the Co layers are magnetically saturated in the parallel or antiparallel directions to ${H}_{a}$. In this case, the magnetic response of the otherwise uncoupled Nb layers is found to depend on both ${H}_{a}$ and the stray fields.