Microstructure and soft magnetic properties of nanocrystalline (Co 0.77 Si 0.135 B 0.095 ) 90 Fe 7 Nb 3  alloy | Zendy

Iturriza N. | Zendy; Zhukov A. | Zendy; Val J. J. del | Zendy; Murillo N. | Zendy; González J. | Zendy

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Microstructure and soft magnetic properties of nanocrystalline (Co 0.77 Si 0.135 B 0.095 ) 90 Fe 7 Nb 3 alloy

Author(s) -

Iturriza N.,

Zhukov A.,

Val J. J. del,

Murillo N.,

González J.

Publication year - 2008

Publication title -

physica status solidi (a)

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.532

H-Index - 104

eISSN - 1862-6319

pISSN - 1862-6300

DOI - 10.1002/pssa.200778129

Subject(s) - nanocrystalline material , coercivity , materials science , amorphous solid , remanence , curie temperature , microstructure , annealing (glass) , nanocrystal , condensed matter physics , magnetization , ferromagnetism , metallurgy , nanotechnology , crystallography , magnetic field , chemistry , physics , quantum mechanics

Microstructure and magnetic hysteretic properties of (Co 0.77 Si 0.135 B 0.095 ) 90 Fe 7 Nb 3 amorphous ribbons submitted to current annealing (current density of 56 A/mm 2 during 2 minutes), to develop the nanocrystallization state, are reported. Temperature dependencies of the saturation magnetization, remanence and coercivity are explained by considering the presence of two crystalline phases, namely: nanocrystals of bcc‐Fe,Co(Si) and fcc‐Co grains and the remaining amorphous matrix. A significant magnetic hardening is observed above the Curie point of the residual amorphous matrix, which could be ascribed to an exchange and a dipolar decoupling of the nanograins. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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