Abstract
Pulsed laser ablation deposition was used to fabricate Ni films. The structure of the as-deposited films is hexagonal (a = 0.267 nm and c = 0.435 nm), and its resistivity is nearly one order of magnitude larger than the resistivity of bulk Ni. No spontaneous magnetization was observed in the as-deposited samples. Annealing above 200 °C induced an irreversible structural transformation from the metastable hexagonal phase to the stable face-centered-cubic (fcc) one. Parallel to this transformation, the magnetic moment of the annealed Ni samples increased, and their resistivity decreased. On annealing at 440 °C, the structural transformation from the hexagonal-close-packed to the fcc phase was completed, and the magnetic moment, Curie temperature, and electrical resistivity of the fcc Ni films were found similar to the ones observed in bulk Ni. A direct correlation between the volume fraction of the fcc Ni phase in our films and their magnetic moment was established.
Similar content being viewed by others
References
J.R. Childress and C.L. Chien, J. Appl. Phys. 70, 5885 (1991).
S.H. Liou, S. Malhotra, Z.S. Shan, D.J. Sellmyer, S. Nafis, J.A. Woollam, C.P. Reed, R.J. DeAngelis, and G.M. Chow, J. Appl. Phys. 70, 5882 (1991).
G. Prinz, Phys. Rev. Lett. 54, 1051 (1985).
See for instance, R.C. O’Handley, Modern Magnetic Materials Principles and Applications (John Wiley & Sons, New York, 2000), p. 627 and references therein.
G. LeClerc and A. Michel, C.R. Acad. Sci. Paris 208, 1583 (1939).
See for instance W. Pearson, Handbook Lattice Spacings & Structures of Metals & Alloys (Franklin Book Co., Elkins Park, PA, 1993), p. 781 and references therein.
M.I. Birjega, V.S. Teodorescu, and I.A. Teodorescu, Rom. J. Phys. 40, 919 (1995).
S.M. Zharkov, V.S. Zhigalov, and G.I. Frolov, Phys. Met. Metallogr. 81, 328 (1996).
G. Carturan, G. Cocco, S. Enzo, R. Ganzerla, and M. Lenarda, Mater. Lett. 7, 47 (1988).
B.D. Cullity, Elements of X-Ray Diffraction (Addison-Wesley Reading, MA, 1978), p. 102.
B.D. Cullity, Elements of X-Ray Diffraction (Addison-Wesley Reading, MA, 1978), p. 377.
M.K. Datta, S.K. Pabi, and B.S. Murty, J. Mater. Res. 15, 1429 (2000).
V. Madurga, J. Vergara, R.J. Ortega, I.P. de Landazábal, C. Favieres, in Polycrystalline Metal and Magnetic Thin Films, edited by D.E. Laughling, K.P. Rodbell, O. Thomas, and B. Zhang (Mater. Res. Soc. Symp. Proc. 562, Warrendale, PA, 1999), p. 283.
V. Madurga, J. Vergara, C. Favieres, in Applications of Ferromagnetic and Optical Materials, Storage and Magnetoelectronics edited by B.J.H. Stadler, K. Bussmann, W. Egglehoff, and E.S. Murdoch (Mater. Res. Soc. Symp. Proc. 674, Warrendale, PA, 2001), p. T3.2.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Vergara, J., Madurga, V. Structure and magnetic properties of Ni films obtained by pulsed laser ablation deposition. Journal of Materials Research 17, 2099–2104 (2002). https://doi.org/10.1557/JMR.2002.0310
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1557/JMR.2002.0310