Canted magnetization in Fe thin films on highly oriented pyrolytic graphite

Wen Chin Lin; Fang Yuh Lo; Ya Yun Huang; Chih Hsiung Wang; Ming Yau Chern

doi:10.1063/1.3654141

Canted magnetization in Fe thin films on highly oriented pyrolytic graphite

Wen Chin Lin^*
, Fang Yuh Lo
, Ya Yun Huang
, Chih Hsiung Wang
, Ming Yau Chern

^*Corresponding author for this work

Department of Physics

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

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.

Original language	English
Article number	083911
Journal	Journal of Applied Physics
Volume	110
Issue number	8
DOIs	https://doi.org/10.1063/1.3654141
Publication status	Published - 2011 Oct 15

ASJC Scopus subject areas

General Physics and Astronomy

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10.1063/1.3654141

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@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){\textendash}(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 Inc.",

number = "8",

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TY - JOUR

T1 - Canted magnetization in Fe thin films on highly oriented pyrolytic graphite

AU - Lin, Wen Chin

AU - Lo, Fang Yuh

AU - Huang, Ya Yun

AU - Wang, Chih Hsiung

AU - Chern, Ming Yau

N1 - 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.

PY - 2011/10/15

Y1 - 2011/10/15

N2 - 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.

AB - 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.

UR - https://www.scopus.com/pages/publications/80655132082

UR - https://www.scopus.com/pages/publications/80655132082#tab=citedBy

U2 - 10.1063/1.3654141

DO - 10.1063/1.3654141

M3 - Article

AN - SCOPUS:80655132082

SN - 0021-8979

VL - 110

JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 8

M1 - 083911

ER -

Canted magnetization in Fe thin films on highly oriented pyrolytic graphite

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