Morphology and domain pattern of epitaxially grown L10 FePt elongated particles
- 作者：Guoqing Li ; Hitoshi Saito ; Shunji Ishio ; Toshiyuki Shima ; Koki Takanashi ; Zuhong Xiong
- 关键词：>L10 FePt particles ; Morphology ; Domain pattern ; MFM ; Epitaxially growing
- 刊名：Journal of Magnetism and Magnetic Materials
- 出版年：2007
- 期刊代码：31_03048853
- 类别：ph
- 出版时间：December 2007
- 卷：319
- 期：1-2
- 页码：73-79
- 文件大小：572 K
摘要
Morphology and domain pattern of L10 FePt particles were observed by using a magnetic force microscopy (MFM). FePt films with nominal thickness in the range of 5 nm
tN40 nm were grown epitaxially by co-depositing Fe and Pt on MgO (0 0 1) substrates at an elevated temperature. Films were composed of elongated particles. The morphology of film and the domain structure of particle depend on tN. In the range of tN8 nm, no multi-domain particles were observed; from tN=10 nm, a few bigger particles become multi-domain. The multi-domain particles have stripe-like domain structures. The relation between morphology and domain structure was discussed by employing a model of isolated rectangular parallelepiped with a stripe-like domain structure.
tN40 nm were grown epitaxially by co-depositing Fe and Pt on MgO (0 0 1) substrates at an elevated temperature. Films were composed of elongated particles. The morphology of film and the domain structure of particle depend on tN. In the range of tN8 nm, no multi-domain particles were observed; from tN=10 nm, a few bigger particles become multi-domain. The multi-domain particles have stripe-like domain structures. The relation between morphology and domain structure was discussed by employing a model of isolated rectangular parallelepiped with a stripe-like domain structure.