Magnetic anisotropy in epitaxial CrO2 (100) thin films

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

Research output: Contribution to journalArticle

8 Citations (Scopus)

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.

Original languageEnglish (US)
Pages (from-to)295-299
Number of pages5
JournalMaterials Letters
Volume56
Issue number3
DOIs
StatePublished - Oct 1 2002

Fingerprint

Magnetic anisotropy
Optical Kerr effect
Thin films
anisotropy
thin films
Crystallites
Crystal orientation
Magnetization
Anisotropy
Vapors
Single crystals
Kerr effects
Crystals
crystallites
magnetic measurement
indication
Substrates
vapor phases
gradients
magnetization

Keywords

  • Chromium oxide
  • Crystalline magnetic anisotropy

ASJC Scopus subject areas

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

Cite this

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

Magnetic anisotropy in epitaxial CrO2 (100) thin films. / Cheng, Ruihua; Liu, Z. Y.; Bo, Xu; Adenwalla, S.; Yuan, L.; Liou, Sy-Hwang; Dowben, P. A.

In: Materials Letters, Vol. 56, No. 3, 01.10.2002, p. 295-299.

Research output: Contribution to journalArticle

Cheng, R, Liu, ZY, Bo, X, Adenwalla, S, Yuan, L, Liou, S-H & Dowben, PA 2002, 'Magnetic anisotropy in epitaxial CrO2 (100) thin films', Materials Letters, vol. 56, no. 3, pp. 295-299. https://doi.org/10.1016/S0167-577X(02)00458-5
Cheng, Ruihua ; Liu, Z. Y. ; Bo, Xu ; Adenwalla, S. ; Yuan, L. ; Liou, Sy-Hwang ; Dowben, P. A. / Magnetic anisotropy in epitaxial CrO2 (100) thin films. In: Materials Letters. 2002 ; Vol. 56, No. 3. pp. 295-299.
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