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I.Yu. Gaidukova, E. Gratz, A. Markosyan, A. Petropavlovsky, V.E. Rodimin:
"Temperature-induced metamagnetic transition in ErCo₃: influence of Fe and Ni substitutions for Co";
Physica B: Condensed Matter, 355 (2005), S. 54 - 58.

Temperature-induced metamagnetic transition in ErCo₃: influence of Fe and Ni substitutions for Co

I.Yu. Gaidukova a, E. Gratz b, A.S. Markosyan a, A.B. Petropavlovsky c and V.E. Rodimin a

a Faculty of Physics, M.V. Lomonosov Moscow State University, Leninskiye gory 1, 119992 Moscow, Russia
b Institute of Solid State Physics, TU Wien, Wiedner Hauptstrasse 8-10, A-1040 Wien, Austria
c Voronezh Military Institute of Aircraft Engineering, 394064 Voronezh, Russia

Received 29 July 2004; accepted 8 October 2004. Available online 1 December 2004.

Abstract

The phenomenon of a temperature-induced itinerant metamagnetism in ErCo₃ (at 65 K) was investigated with respect to small substitutions of Fe and Ni for Co. Five percent of Fe or Ni substitutions change the transition temperature to 170 or 25 K, respectively. The transition is accompanied by a large magneto-volume effect, Δ V/V reaches not, vert, ~0.5%, which allowed to relate the thermal expansion data with the magnetic state of the d-electrons. The change of the magnetic characteristics with substitutions is mainly ascribed to the shift of the position of the Fermi level in the hybridised d-electron energy band.

Keywords: Itinerant-electron metamagnetism; R-3d intermetallics; Magneto-volume effect

PACS: 72.15.Eb; 75.30.Kz; 75.50.Gg

http://aleph.ub.tuwien.ac.at/F?base=tuw01&func=find-c&ccl_term=AC05938229

http://dx.doi.org/10.1016/j.physb.2004.10.019