Influence of Thickness Variation on Perpendicular Magnetic Anisotropy Features of the [Co/Pt](n) Multilayer Frame
- Authors
- Lee, Ja Bin; An, Gwang Guk; Yang, Seung Mo; Hong, Jin Pyo
- Issue Date
- Nov-2014
- Publisher
- AMER SCIENTIFIC PUBLISHERS
- Keywords
- CoPt; Perpendicular Magnetic Anisotropy; MRAM; Pt Thickness
- Citation
- JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, v.14, no.11, pp.8792 - 8795
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
- Volume
- 14
- Number
- 11
- Start Page
- 8792
- End Page
- 8795
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/143297
- DOI
- 10.1166/jnn.2014.9972
- ISSN
- 1533-4880
- Abstract
- We report the structural and magnetic properties of a [Co/Pt] multilayer matrix as a function of Pt thickness. Increasing Pt thickness allows for the formation of a well-aligned fcc (111) CoPt3 structure in a [Co/Pt](n) multilayer geometry, where the clear appearance of main (111) peak of CoPt3 measured using the X-ray diffraction patterns was confirmed. High-resolution transmission electron microscopy images, along with the corresponding fast Fourier transform patterns displayed the ordered structure with clear 6-fold symmetric diffraction spots. The c/a lattice constant ratio of 0.949 was calculated by utilizing the XRD and, demonstrating the presence of a well-aligned CoPt3 structure. The Pt thickness-dependent saturation magnetization (M-S) values for the in- and out-of-plane M-H hysteresis loops obtained by vibrating sample magnetometer measurements showed distinctly opposite trends. The increase in the out-of-plane M-S value with increasing Pt thickness seems to originate from the enhanced perpendicular orbital moment of the proper CoPt3 structure.
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