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Tunable magnetic anisotropy in obliquely sputtered Co60Fe40 thin films on Si(100)
Jamia Millia Islamia, New Delhi 110025, India; Indian Inst Technol Delhi, Dept Phys, Thin Film Lab, New Delhi 110016, India; Univ Lorraine, Inst Jean Lamour, CNRS UMR 7198, F-54500 Nancy, France.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics. Indian Inst Technol Delhi, Dept Phys, Thin Film Lab, New Delhi 110016, India.
Indian Inst Technol Delhi, Dept Phys, Thin Film Lab, New Delhi 110016, India.
Indian Inst Technol Delhi, Dept Phys, Thin Film Lab, New Delhi 110016, India.
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2019 (English)In: Physica. B, Condensed matter, ISSN 0921-4526, E-ISSN 1873-2135, Vol. 570, p. 1-5Article in journal (Refereed) Published
Abstract [en]

Effect of substrate rotation on the structural, magneto-optic and magneto-transport properties of DC magnetron sputtered Co60Fe40 thin films is investigated. Two thin film samples (each of 20 nm thickness) were prepared by rotating (S-WR) and without rotating (S-WOR) the substrate during deposition. X-ray diffraction (XRD) patterns reveal that the films exhibit textured crystallographic orientation. Surface morphological analysis of these films indicate that the surface of S-WR is smooth in comparison to the sample S-WOR. The magneto-optic Kerr effect analysis reveals that the sample S-WR is isotropic in nature whereas a large uniaxial anisotropy is present in the sample S-WOR due to textured orientation as supported by XRD study. The effect of rotation on the anisotropy is further demonstrated by measuring magneto-resistance (MR) in two configurations, i. e., longitudinal (LMR) and transverse magnetoresistance (TMR) configurations. In the sample S-WOR, the values of MR are quite different, i. e., 0.29% (TMR) and -0.10% (LMR) whereas identical MR values, i. e., 0.19% (for both LMR and TMR), were observed in the sample S-WR. This indicates that the anisotropy in CoFe can be suppressed by rotating the substrates during growth. Thus the tunability of anisotropy is possible by rotating the substrate which is potentially useful for manipulating the properties of ferromagnetic materials for spintronic applications.

Place, publisher, year, edition, pages
ELSEVIER , 2019. Vol. 570, p. 1-5
Keywords [en]
Magneto-optic kerr effect, Magnetoresistance, Substrate rotation, Omni-anisotropic
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:uu:diva-393718DOI: 10.1016/j.physb.2019.05.013ISI: 000481733800001OAI: oai:DiVA.org:uu-393718DiVA, id: diva2:1354959
Conference
International Conference on Magnetic Materials and Applications (ICMAGMA), DEC 09-13, 2018, Natl Inst Sci Educ & Res, Sch Phys Sci, Jatni, INDIA
Available from: 2019-09-26 Created: 2019-09-26 Last updated: 2019-09-26Bibliographically approved

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Husain, Sajid

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