@article{3a1346c00f5343a295c0ed9480a5b457,
title = "Canted magnetization in Fe thin films on highly oriented pyrolytic graphite",
abstract = "Because of the unique properties of graphene, the combination of perpendicular magnetized materials and a carbon-based template is especially useful. This study examines the effect of highly oriented pyrolytic graphite (HOPG) surface defects on Fe thin films. Numerous Fe thin films were grown on planar HOPG (p-HOPG) and Ar+ sputtered HOPG (s-HOPG), for comparison. X-ray diffraction showed the preferred (110) texture for Fe films on both p-HOPG and s-HOPG. Fe/p-HOPG exhibited only in-plane magnetization. In contrast, Fe/s-HOPG exhibited the coexistence of in-plane and perpendicular magneto-optical Kerr effect hysteresis loops, indicating a stable, canted magnetization. The canted magnetization of Fe/s-HOPG persisted to at least 20 atomic monolayers and might be attributed to a volume-contributed perpendicular anisotropy. These observations are relevant to a combination of ferromagnetic thin films and graphene-related templates.",
author = "Lin, {Wen Chin} and Lo, {Fang Yuh} and Huang, {Ya Yun} and Wang, {Chih Hsiung} and Chern, {Ming Yau}",
note = "Funding Information: This work was supported by the National Science Council of Taiwan under Grant Nos. NSC 99-2738 -M-003-001, NSC 99-2112 -M-003-009-MY3, NSC 99-2923 -M-003-001-MY2, and NSC 98-2112 -M-003-007-MY3. FIG. 1. (Color online) X-ray diffraction patterns of 2 nm Au/25 ML Fe/planar-HOPG, 2 nm Au/25 ML Fe/sputtered-HOPG, and HOPG immediately after cleaving. FIG. 2. (Color online) (a)–(c) Crystalline structures of HOPG, Fe(111), and Fe(110), respectively. The arrows indicate the possible cell for lattice matching. (d) Illustrations of the lattice matching cell for Fe(110) on HOPG, as indicated by the dotted parallelogram. FIG. 3. Normalized magnetic Kerr hysteresis loops for n ML Fe/planar-HOPG measured at RT. FIG. 4. Normalized magnetic Kerr hysteresis loops for n ML Fe/sputtered-HOPG measured at RT. FIG. 5. Coercivity field (H c ) of Fe/p-HOPG and Fe/s-HOPG deduced from Figs. 3 and 4 as a function of Fe thickness. ",
year = "2011",
month = oct,
day = "15",
doi = "10.1063/1.3654141",
language = "English",
volume = "110",
journal = "Journal of Applied Physics",
issn = "0021-8979",
publisher = "American Institute of Physics Publising LLC",
number = "8",
}