Patterning ferromagnetism in Ni[sub 80]Fe[sub 20] films via Ga[sup +] ion irradiation

Kaminsky, W. M.; Jones, G. A. C.; Patel, N. K.; Booij, W. E.; Blamire, M. G.; Gardiner, S. M.; Xu, Y. B.; Bland, J. A. C.
March 2001
Applied Physics Letters;3/12/2001, Vol. 78 Issue 11, p1589
Academic Journal
We demonstrate that focused Ga[sup +] ion irradiation can comprehensively modify the ferromagnetic properties of Ni[sub 80]Fe[sub 20] thin films. Magneto-optic Kerr effect measurements at room temperature and magnetoresistance measurements at temperatures between 1.5 and 270 K characterized the irradiation effects. Irradiation steadily reduced the films' room temperature coercivity, and a dose of 1.0x10[sup 16] ions/cm[sup 2] at 30 keV was found sufficient to cause a loss of ferromagnetism at room temperature in films of thickness up to 15.5 nm. In situ end-point detection and postirradiation atomic force microscopy confirmed that the sputtering which accompanied doses up to 1.0x10[sup 16] ions/cm[sup 2] did not compromise the protective caps on these Ni[sub 80]Fe[sub 20] films. We therefore conclude that the modification of ferromagnetic properties occurred primarily because of direct Ga[sup +] ion implantation. From these results, we speculate that focused Ga[sup +] ion irradiation could be a convenient tool for the nanoscale patterning of magnetic properties in 3d transition metal thin films. © 2001 American Institute of Physics.


Related Articles

  • Study of magnetic properties and relaxation in amorphous Fe73.9Nb3.1Cu0.9Si13.2B8.9 thin films produced by ion beam sputtering. Celegato, F.; Coïsson, M.; Magni, A.; Tiberto, P.; Vinai, F.; Kane, S. N.; Modak, S. S.; Gupta, A.; Sharma, P. // Journal of Applied Physics;8/15/2007, Vol. 102 Issue 4, p043916 

    Amorphous Fe73.9Nb3.1Cu0.9Si13.2B8.9 thin films have been produced by ion beam sputtering with two different beam energies (500 and 1000 eV). Magnetic measurements indicate that the samples display a uniaxial magnetic anisotropy, especially for samples prepared with the lower beam energy....

  • Simultaneous in-plane Kerr effects in Fe/GaAs (110) thin films. Florczak, J. M.; Dahlberg, E. Dan; Kuznia, J. N.; Wowchak, A. M.; Cohen, P. I. // Journal of Applied Physics;4/15/1991, Vol. 69 Issue 8, p4997 

    Examines the simultaneous in-plane Kerr effects in ferromagnetic thin films. Application of the in-plane magneto-optical Kerr effects; Details on the experiment; Discussion on the results of the study.

  • Magnetic properties of ultrathin Co/Ge(111) and Co/Ge(100) films. Cheng, W. C.; Tsay, J. S.; Yao, Y. D.; Lin, K. C.; Yang, C. S.; Lee, S. F.; Tseng, T. K.; Neih, H. Y. // Journal of Applied Physics;6/1/2001, Vol. 89 Issue 11, p7130 

    The orientation of the magnetization and the occurrence of interfacial ferromagnetic inactive layers for ultrathin Co films grown on Ge(111) and Ge(100) surfaces have been studied using the in situ surface magneto-optic Kerr effect. On a Ge(111) substrate, cobalt films (<=28 monolayers) with...

  • Magnetic properties of novel epitaxial films (invited). Bader, S. D.; Moog, E. R. // Journal of Applied Physics;4/15/1987, Vol. 61 Issue 8, p3729 

    Explores the magnetism of ultra thin iron films extending into the monolayer regime by using the surface magneto-optic Kerr effect. Magnetic properties of novel epitaxial films; Description of the properties of iron; Determination of the ferromagnetism of such films.

  • Determination of spin distributions in ion-beam magnetic textured iron films by magnetic orientation Mössbauer spectroscopy. Müller, G. A.; Gupta, R.; Lieb, K.-P.; Schaaf, P. // Applied Physics Letters;1/6/2003, Vol. 82 Issue 1, p73 

    A promising approach by which to gain information about the spin distributions in different sample layers using depth-sensitive angle-dependent conversion electron Mössbauer spectroscopy is presented in combination with magneto-optical Kerr effect, Rutherford backscattering spectrometry and...

  • Superconducting quantum interference device magnetometry during ultrahigh vacuum growth. Pappas, D.P.; Prinz, G.A.; Ketchen, M.B. // Applied Physics Letters;12/26/1994, Vol. 65 Issue 26, p3401 

    Describes the absolute magnetic moment of thin ferromagnetic films grown in ultrahigh vacuum (UHV). Development of fabrication techniques for magnetic materials; Popularity of magneto-optical Kerr effect for film magnetization; Application of magnetometers to UHV samples.

  • Spin reorientation transition in Ni films on Cu(100). Wu, S. Z.; Mankey, G. J.; Huang, F.; Willis, R. F. // Journal of Applied Physics;11/15/1994, Vol. 76 Issue 10, p6434 

    Presents a study on the magnetic anisotropy of nickel films grown on single-crystal copper using the surface magneto-optic Kerr effect. Properties of ultrathin ferromagnetic films; Magnetic specification of bulk nickel; Discussion on Kerr ellipticities for film thicknesses below eight monolayers.

  • Study of ultrathin Co films grown on Si(111) substrates. STUPAKIEWICZ, A.; FLEURENCE, A.; GIENIUSZ, R.; MAZIEWSKI, A.; MAROUTIAN, T.; GOGOL, P.; BARTENLIAN, B.; MÉGY, R.; BEAUVILLAIN, P. // Materials Science (0137-1339);2008, Vol. 26 Issue 4, p1021 

    Ultrathin Co films were grown on vicinal Si(III) substrate with Cu buffer layers. Room temperature ferromagnetic behaviour of Co layer thicker than 4 monolayers was confirmed by the magneto-optical Kerr effect. Ferromagnetic resonance measurements have proven the coexistence of the...

  • Magneto-optical properties of cobalt slanted columnar thin films. Schmidt, Daniel; Hofmann, Tino; Herzinger, Craig M.; Schubert, Eva; Schubert, Mathias // Applied Physics Letters;3/1/2010, Vol. 96 Issue 9, p091906 

    Magneto-optical properties of ferromagnetic slanted columnar thin films from cobalt made by electron-beam glancing angle deposition are reported. Magneto-optic ellipsometry in the polar Kerr effect configuration was employed to determine the field- and wavelength-dependent complex magneto-optic...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics