Magnetic anisotropy in epitaxial CrO2 (100) thin films

Ruihua Cheng; Z. Y. Liu; Xu Bo; S. Adenwalla; L. Yuan; S. H. Liou; P. A. Dowben

doi:10.1016/S0167-577X(02)00458-5

Magnetic anisotropy in epitaxial CrO₂ (100) thin films

Ruihua Cheng, Z. Y. Liu, Xu Bo, S. Adenwalla, L. Yuan, S. H. Liou, P. A. Dowben

Research output: Contribution to journal › Article

8 Scopus citations

Abstract

CrO₂ thin films fabricated on single crystal TiO₂ (100) substrates by vapor phase transport grow with strongly textured growth characteristics and strong preferential orientation of the crystallites. We have used magneto-optical Kerr effect (MOKE) and alternating gradient force magnetometry (AGFM) to study the in-plane magnetic anisotropy. Both the coercive field, H_C, and remnant magnetization M_r/M_s show strong twofold in-plane symmetry and the results, vs. angle, fit a coherent rotation model of domain reversal. We verify that the magnetic easy axis is along the c-axis of the crystal and the first order anisotropy constant, K₁, is estimated to be about (2.3 ± 0.2) × 10⁵ erg/cm³, consistent with the previous results. Near T_c, there are strong indications that the contributions to the magnetic anisotropy are strongly altered.

Original language	English (US)
Pages (from-to)	295-299
Number of pages	5
Journal	Materials Letters
Volume	56
Issue number	3
DOIs	https://doi.org/10.1016/S0167-577X(02)00458-5
State	Published - Oct 2002

Keywords

Chromium oxide
Crystalline magnetic anisotropy

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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Cheng, R., Liu, Z. Y., Bo, X., Adenwalla, S., Yuan, L., Liou, S. H., & Dowben, P. A. (2002). Magnetic anisotropy in epitaxial CrO₂ (100) thin films. Materials Letters, 56(3), 295-299. https://doi.org/10.1016/S0167-577X(02)00458-5

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title = "Magnetic anisotropy in epitaxial CrO2 (100) thin films",

abstract = "CrO2 thin films fabricated on single crystal TiO2 (100) substrates by vapor phase transport grow with strongly textured growth characteristics and strong preferential orientation of the crystallites. We have used magneto-optical Kerr effect (MOKE) and alternating gradient force magnetometry (AGFM) to study the in-plane magnetic anisotropy. Both the coercive field, HC, and remnant magnetization Mr/Ms show strong twofold in-plane symmetry and the results, vs. angle, fit a coherent rotation model of domain reversal. We verify that the magnetic easy axis is along the c-axis of the crystal and the first order anisotropy constant, K1, is estimated to be about (2.3 ± 0.2) × 105 erg/cm3, consistent with the previous results. Near Tc, there are strong indications that the contributions to the magnetic anisotropy are strongly altered.",

keywords = "Chromium oxide, Crystalline magnetic anisotropy",

author = "Ruihua Cheng and Liu, {Z. Y.} and Xu Bo and S. Adenwalla and L. Yuan and Liou, {S. H.} and Dowben, {P. A.}",

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T1 - Magnetic anisotropy in epitaxial CrO2 (100) thin films

AU - Cheng, Ruihua

AU - Liu, Z. Y.

AU - Bo, Xu

AU - Adenwalla, S.

AU - Yuan, L.

AU - Liou, S. H.

AU - Dowben, P. A.

PY - 2002/10

Y1 - 2002/10

N2 - CrO2 thin films fabricated on single crystal TiO2 (100) substrates by vapor phase transport grow with strongly textured growth characteristics and strong preferential orientation of the crystallites. We have used magneto-optical Kerr effect (MOKE) and alternating gradient force magnetometry (AGFM) to study the in-plane magnetic anisotropy. Both the coercive field, HC, and remnant magnetization Mr/Ms show strong twofold in-plane symmetry and the results, vs. angle, fit a coherent rotation model of domain reversal. We verify that the magnetic easy axis is along the c-axis of the crystal and the first order anisotropy constant, K1, is estimated to be about (2.3 ± 0.2) × 105 erg/cm3, consistent with the previous results. Near Tc, there are strong indications that the contributions to the magnetic anisotropy are strongly altered.

AB - CrO2 thin films fabricated on single crystal TiO2 (100) substrates by vapor phase transport grow with strongly textured growth characteristics and strong preferential orientation of the crystallites. We have used magneto-optical Kerr effect (MOKE) and alternating gradient force magnetometry (AGFM) to study the in-plane magnetic anisotropy. Both the coercive field, HC, and remnant magnetization Mr/Ms show strong twofold in-plane symmetry and the results, vs. angle, fit a coherent rotation model of domain reversal. We verify that the magnetic easy axis is along the c-axis of the crystal and the first order anisotropy constant, K1, is estimated to be about (2.3 ± 0.2) × 105 erg/cm3, consistent with the previous results. Near Tc, there are strong indications that the contributions to the magnetic anisotropy are strongly altered.

KW - Chromium oxide

KW - Crystalline magnetic anisotropy

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