NDLI: Temperature dependence of the magnetic hyperfine field at cerium impurity in Co

Content Provider	Springer Nature Link
Author	Mestnik Filho, J. Saxena, R. N. Carbonari, A. W. Cabrera Pasca, G. A.
Copyright Year	2008
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.
Ending Page	73
Page Count	5
Starting Page	69
File Format	PDF
ISSN	03043843
e-ISSN	15729540
Journal	Hyperfine Interactions
Issue Number	1-3
Volume Number	176
Language	English
Publisher	Springer Netherlands
Publisher Date	2008-08-06
Publisher Place	Dordrecht
Access Restriction	Subscribed
Subject Keyword	Atoms, Molecules, Clusters and Plasmas Magnetic hyperfine field Nuclear Physics, Heavy Ions, Hadrons Condensed Matter Magnetism Surfaces and Interfaces, Thin Films Cobalt PAC spectroscopy
Content Type	Text
Resource Type	Article
Subject	Nuclear and High Energy Physics Atomic and Molecular Physics, and Optics Physical and Theoretical Chemistry Condensed Matter Physics

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