[Zurück]

R. Sato Turtelli, C. Bormio-Nunes, G. Kumar, R. Grössinger, J. Eckert, L. Schultz:
"Magnetostriction of hard magnetic Nd₈₀Fe₂₀ mold-cast rod";
Journal of Magnetism and Magnetic Materials, 285 (2005), S. 395 - 400.

Magnetostriction of hard magnetic Nd80Fe20 mold-cast rod

R. Sato Turtellia, Corresponding Author Contact Information, E-mail The Corresponding Author, C. Bormio-Nunesb, G. Kumarc, R. Grössingera, J. Eckertd, c and L. Schultzc

aInstitut f. Festkörperphysik, Technische Universität Wien, Wiedner Hauptsrasse 8-10, 1040 Vienna, Austria
bFAENQUIL, Depto de Eng. de Materiais, CP 116, 12600-970 Lorena SP, Brasil
cInstitut für Mettalische Werkstoffe, IFW Dresden, Postfach 270016, D-01171 Dresden, Germany
dUniversität Darmstadt, Petersenstr. 23, D-64287 Darmstadt, Germany

Received 9 June 2004; revised 6 August 2004. Available online 1 September 2004.


Abstract

Results of linear magnetostriction measurements on a Nd80Fe20 mold-cast rod applying a field up to 9 T parallel and perpendicular to the axis of the rod are presented. At 4.5 K, the parallel and perpendicular magnetostrictions at an applied field of Click to view the MathML source are −366×10−6 and −180×10−6, respectively, indicating that the pure Nd crystalline phase formed in Nd80Fe20 during the solidification exhibits a crystallographic and a magnetic anisotropy. At 280 K, the Nd80Fe20 rod is magnetically isotropic and exhibits a positive magnetostriction of 36×10−6, at Click to view the MathML source. The magnetostrictive properties are discussed based on the temperature dependence of magnetization and thermal expansion in conjunction with the previously reported results about the microstructure of the same specimen.

Keywords: Magnetostriction; Magnetization-temperature dependence; Rare earth-transition metal alloys; Thermal expansion

http://aleph.ub.tuwien.ac.at/F?base=tuw01&func=find-c&ccl_term=AC05937837

doi:10.1016/j.jmmm.2004.08.009