NIMTE OpenIR  > 2018专题
Lattice-Mismatch-Induced Oscillatory Feature Size and Its Impact on the Physical Limitation of Grain Size
Deng, Jinyu; Li, Huihui; Dong, Kaifeng; Li, Run-Wei; Peng, Yingguo; Ju, Ganping; Hu, Jiangfeng; Chow, Gan Moog; Chen, Jingsheng
2018
Source PublicationPHYSICAL REVIEW APPLIED
Volume9Issue:3
AbstractWe find that the misfit strain may lead to the oscillatory size distributions of heteroepitaxial nanostructures. In heteroepitaxial FePt thin films grown on single-crystal MgO substrate, < 110 >-oriented mazelike and granular patterns with "quantized" feature sizes are realized in scanning-electron-microscope images. The physical mechanism responsible for the size oscillations is related to the oscillatory nature of the misfit strain energy in the domain-matching epitaxial FePt/MgO system, which is observed by transmission electron microscopy. Based on the experimental observations, a model is built and the results suggest that when the FePt island sizes are an integer times the misfit dislocation period, the misfit strain can be completely canceled by the misfit dislocations. With applying the mechanism, small and uniform grain is obtained on the TiN (200) polycrystalline underlayer, which is suitable for practical application. This finding may offer a way to synthesize nanostructured materials with well-controlled size and size distribution by tuning the lattice mismatch between the epitaxial-grown heterostructure.
KeywordLongitudinal Recording Media Magnetic-properties Fept Nanoparticles Thin-films Growth Microstructure Temperature Underlayer Fept(001) Systems
Subject AreaPhysics
Language英语
Document Type期刊论文
Identifierhttp://ir.nimte.ac.cn/handle/174433/16748
Collection2018专题
Recommended Citation
GB/T 7714
Deng, Jinyu,Li, Huihui,Dong, Kaifeng,et al. Lattice-Mismatch-Induced Oscillatory Feature Size and Its Impact on the Physical Limitation of Grain Size[J]. PHYSICAL REVIEW APPLIED,2018,9(3).
APA Deng, Jinyu.,Li, Huihui.,Dong, Kaifeng.,Li, Run-Wei.,Peng, Yingguo.,...&Chen, Jingsheng.(2018).Lattice-Mismatch-Induced Oscillatory Feature Size and Its Impact on the Physical Limitation of Grain Size.PHYSICAL REVIEW APPLIED,9(3).
MLA Deng, Jinyu,et al."Lattice-Mismatch-Induced Oscillatory Feature Size and Its Impact on the Physical Limitation of Grain Size".PHYSICAL REVIEW APPLIED 9.3(2018).
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