FULLY IN PLANE ALIGNED SMCO BASED FILMS PREPARED BY PULSED LASER DEPOSITION
FULLY IN PLANE ALIGNED SMCO BASED FILMS PREPARED BY PULSED LASER DEPOSITION
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通过脉冲激光沉积制备的完全平面对准 SMCO 薄膜
DOI：
10.1063/1.369906
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发表时间：
1999
影响因子：
3.2
通讯作者：
L. Chen
中科院分区：
文献类型：
--
作者：
F. Cadieu;R. Rani;T. Theodoropoulos;L. Chen
采用高脉冲能量脉冲激光沉积技术，将厚度为1~3μm的SmCo基薄膜直接晶化在375 °C的中温多晶衬底上。薄膜已经被沉积，以比较阴影沉积和直接沉积。只有在阴影沉积条件下，才有可能沉积出具有高矫直力的单相材料的磁滞回线特征的CaCu5型结构薄膜。阴影沉积的薄膜呈镜面状，颗粒非常细小(小于0.2μm)，c轴完全对准衬底平面。对于优化沉积的薄膜，垂直于薄膜平面测量的室温磁滞回线闭合，矫顽力接近于零。对于这种薄膜，在室温磁场为±90kOe的平面内测得的磁滞回线的本征矫顽力至少为22.5kOe。±19Koe的测量场在某些情况下只产生不包围原点的微小环路。质感完美的SmCo b..。
SmCo based films, ≈1–3 μm thick, have been directly crystallized onto moderately heated polycrystalline susbstrates, 375 °C, by high pulse energy pulsed laser deposition. Films have been deposited to compare shadow and direct deposition. Only for shadow deposition conditions has it been possible to deposit CaCu5-type structure films that exhibit hysteresis loops characteristic of single phase materials with high coercivities. The shadow deposited films are mirror-like, very fined grained (less that 0.2 μm), and with the crystallite c axes completely aligned onto the substrate plane. For optimally deposited films, room temperature hysteresis loops measured perpendicular to the film plane were closed with approximately zero coercivity. For such films, hysteresis loops measured in plane with fields to ±90 kOe at room temperature exhibited intrinsic coercivities of at least 22.5 kOe. Measurement fields of ±19 kOe yielded only minor loops that did not enclose the origin in some cases. The fully textured SmCo b...