Abstract
Perturbed gamma-gamma angular correlation (PAC) technique was used to measure the magnetic hyperfine field (B hf ) at Ce impurity in Co using 140La→140Ce probe. The radioactive 140La produced by neutron irradiation of lanthanum metal with thermal neutrons was introduced in Co by arc melting in argon atmosphere. The present measurements cover the temperature range from 4.2–1300 K. Two pure magnetic interactions were observed at impurity sites, corresponding to a ferromagnetic ordering of Co moments in hcp and fcc phases. The temperature dependence of B hf for both phases, however, shows a sharp deviation from an expected standard Brillouin-like behavior for the host magnetization. The results are discussed in terms of a simple molecular-field model where the localized moment at impurity ions as well as the conduction electron contributions to the hyperfine field are taken into account.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Carbonari, A.W., Saxena, R.N., Pendl, W. Jr., Mestnik-Filho, J., Attili, R., Olzon-Dionysio, M., de Souza, S.D.: J. Magn. Magn. Mater. 163, 313–321 (1996)
Carbonari, A.W., Mestnik-Filho, J., Saxena, R.N., Lalic, M.V.: Phys. Rev. B. 69(144425) (2004)
Huffman, G.P., Dunmyre, G.R.: J. Appl. Phys. 41, 1323 (1970)
Senba, M., Raghavan, P., Semmler, W., Raghavan, R.S.: Hyperfine Interact. 9, 453 (1981)
Bedi, S.C., Forker, M.: Phys. Rev., B. 47, 14948 (1993)
Jaccarino, V., Walker, L.R., Wertheim, G.K.: Phys. Rev. Lett. 13, 752 (1964)
Thiel, T.A., Gerdau, E., Scharnberg, B., Böttcher, M.: Hyperfine Interact. 14, 347 (1983)
Wackelgard, E., Karlsson, E., Lindgren, B., Mayer, A., Hrynkiewicz, Z.: Hyperfine Interact. 51, 853 (1989)
Carbonari, A.W., Cavalcante, F.H.M., Pereira, L.F.D., Cabrera-Pasca, G.A., Mestnik-Filho, J., Saxena, R.N.: J. Magn. Magn. Mat. 320, e478 (2008)
Lezaic, M., Mavropoulos, Ph., Bliigel, S.: Appl. Phys. Lett. 90, 082504–1 (2007)
Crangle, J.: Philos. Mag. 46, 499 (1955)
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2008 Springer Science + Business Media B.V.
About this paper
Cite this paper
Carbonari, A.W., Cabrera-Pasca, G.A., Saxena, R.N., Mestnik-Filho, J. (2008). Temperature dependence of the magnetic hyperfine field at cerium impurity in Co. In: Pasquevich, A., Rentería, M., Saitovitch, E.B., Petrilli, H. (eds) HFI/NQI 2007. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-85320-6_11
Download citation
DOI: https://doi.org/10.1007/978-3-540-85320-6_11
Published:
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-85319-0
Online ISBN: 978-3-540-85320-6
eBook Packages: Physics and AstronomyPhysics and Astronomy (R0)