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Effect of annealing time on structural and magnetic properties of laser ablated oriented Fe3O4 thin films deposited on Si(100)

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Abstract

We have fabricated ∼143 nm Fe3O4 thin films on Si(100) substrates at 450°C and then annealed them at the same temperature for 30, 60 and 90 min under a vacuum of 10 − 6 torr with pulsed laser deposition. We studied the effects on the structural and magnetic properties of Fe3O4 thin films. The films have been characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and vibrating sample magnetometry (VSM). XRD studies showed pure single phase spinel cubic structure of Fe3O4 with a preferential [111] orientation, independent of substrate orientation at 90 min annealing. Higher magnetization was obtained up to 60 min annealing due to Fe phase but at 90 min, we obtained reduced magnetization of 335 emu/cc. This is attributed to the formation of antiphase boundaries between substrate and film.

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Authors and Affiliations

  1. Department of Physics, School of Science and Engineering, Lahore University of Management Sciences (LUMS), Opposite Sector U. D.H.A., Lahore, 54972, Pakistan

    SHAHID M RAMAY & M SABIEH ANWAR

  2. Department of Chemical Engineering, College of Engineering, King Saud University, P.O. Box 800, Riyadh, 11421, Saudi Arabia

    SHAHID M RAMAY

  3. Interdisciplinary Research Centre in Biomedical Materials, COMSATS Institute of Information Technology, Off Raiwind Road, Defence Road, Lahore, Pakistan

    SAADAT A SIDDIQI

  4. Department of Physics, KAIST, 373-1 Guseong-dong, Yuseong-gu, Daejeon, 305-701, Korea

    C Y PARK & S-C SHIN

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  1. SHAHID M RAMAY
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  2. SAADAT A SIDDIQI
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  3. M SABIEH ANWAR
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  4. C Y PARK
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  5. S-C SHIN
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Correspondence to M SABIEH ANWAR.

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RAMAY, S.M., SIDDIQI, S.A., ANWAR, M.S. et al. Effect of annealing time on structural and magnetic properties of laser ablated oriented Fe3O4 thin films deposited on Si(100). Bull Mater Sci 35, 501–503 (2012). https://doi.org/10.1007/s12034-012-0318-2

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  • DOI: https://doi.org/10.1007/s12034-012-0318-2

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