MAGNETIC AND STRUCTURAL-PROPERTIES OF SINGLE-CRYSTAL RARE-EARTH GD-Y SUPERLATTICES
MAGNETIC AND STRUCTURAL-PROPERTIES OF SINGLE-CRYSTAL RARE-EARTH GD-Y SUPERLATTICES
复制标题
DOI：
10.1103/physrevlett.55.1402
复制
发表时间：
1985-01-01
影响因子：
8.6
通讯作者：
BOWER, JE
中科院分区：
文献类型：
--
作者：
KWO, J;GYORGY, EM;BOWER, JE
用金属分子束外延法生长出了第一个相干单晶磁性稀土超晶格。x射线结构分析表明，超晶格具有两个原子-层-锐界面的组成调制，调制幅度接近100%。磁性能与一个模型相一致，在这个模型中，即使只有五个原子层，每个阵列中的中心Gd层也表现得像理想的铁磁薄膜。两侧的两个界面Gd层似乎不是铁磁有序的，并且磁化率χ g与原子层的数量无关。
The first coherent, single-crystal, magnetic rare-earth superlattices of Gd-Y were grown by metal molecular-beam epitaxy. X-ray structural analysis showed that the superlattices have a composition modulation of two atomic-layer-sharp interfaces with the modulation amplitude approaching 100%. The magnetic properties are consistent with a model in which the central Gd layers in each array behave like ideal ferromagnetic thin films even for as few as five atomic layers. The two interfacial Gd layers at the sides appear not to order ferromagnetically and have a susceptibility χ g independent of the number of atomic layers.