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

Bulletin of materials science

C Y Park³  M Sabieh Anwar¹  S-C Shin³  Saadat A Siddiqi⁴  Shahid M Ramay² 

[1] Department of Physics, School of Science and Engineering, Lahore University of Management Sciences (LUMS), Opposite Sector U. D.H.A., Lahore 54972, Pakistan$$Department of Physics, School of Science and Engineering, Lahore University of Management Sciences (LUMS), Opposite Sector U. D.H.A., Lahore 54972, PakistanDepartment of Physics, School of Science and Engineering, Lahore University of Management Sciences (LUMS), Opposite Sector U. D.H.A., Lahore 54972, Pakistan$$;Department of Physics, School of Science and Engineering, Lahore University of Management Sciences (LUMS), Opposite Sector U. D.H.A., Lahore 54972, Pakistan$$Department of Chemical Engineering, College of Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi Arabia$$Department of Physics, School of Science and Engineering, Lahore University of Management Sciences (LUMS), Opposite Sector U. D.H.A., Lahore 54972, PakistanDepartment of Physics, School of Science and Engineering, Lahore University of Management Sciences (LUMS), Opposite Sector U. D.H.A., Lahore 54972, Pakistan$$Department of Chemical Engineering, College of Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi Arabia$$Department of Chemical Engineering, College of Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi ArabiaDepartment of Physics, School of Science and Engineering, Lahore University of Management Sciences (LUMS), Opposite Sector U. D.H.A., Lahore 54972, Pakistan$$Department of Chemical Engineering, College of Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi Arabia$$;Department of Physics, KAIST, 373-1 Guseong-dong, Yuseong-gu, Daejeon, 305-701, Korea$$Department of Physics, KAIST, 373-1 Guseong-dong, Yuseong-gu, Daejeon, 305-701, KoreaDepartment of Physics, KAIST, 373-1 Guseong-dong, Yuseong-gu, Daejeon, 305-701, Korea$$;Interdisciplinary Research Centre in Biomedical Materials, COMSATS Institute of Information Technology, Off Raiwind Road, Defence Road, Lahore, Pakistan$$Interdisciplinary Research Centre in Biomedical Materials, COMSATS Institute of Information Technology, Off Raiwind Road, Defence Road, Lahore, PakistanInterdisciplinary Research Centre in Biomedical Materials, COMSATS Institute of Information Technology, Off Raiwind Road, Defence Road, Lahore, Pakistan$$

关键词: Iron oxide;    Fe3O4 thin film;    pulse laser deposition;    annealing;    saturation magnetization.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

We have fabricated ∼143nm 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.

【 授权许可】

Unknown