[Zurück]

H. Niki, T. Fukumura, H. Kinjou, T. Kinjou, M. Pieper, E. Gratz, V. Paul-Boncour, A. Markosyan:
"Magnetic instabilities in Er_1-xY_xCo₃ studied by NMR";
Physica B: Condensed Matter, 378-380 (2006), S. 1087 - 1088.

Physica B: Condensed Matter
Volumes 378-380 , 1 May 2006, Pages 1087-1088
Proceedings of the International Conference on Strongly Correlated Electron Systems - SCES 2005

doi:10.1016/j.physb.2006.01.432
Copyright © 2006 Elsevier B.V. All rights reserved.

Magnetic instabilities in Er_1-xY_xCo₃ studied by NMR

H. Niki a, T. Fukumura a, H. Kinjou a, T. Kinjou a, M.W. Pieper b, E. Gratz b, V. Paul-Boncour c and A.S. Markosyan d

a Faculty of Science, University of the Ryukyus, Nishihara, Okinawa 903-0213, Japan
b Institute for Experimental Physics, TU Vienna, Wiedner Hauptstrasse 8-10, A-1040 Vienna, Austria
c LCMTR, CNRS, 94320 Thiais, France
d Faculty of Physics, M.V. Lomonosov Moscow State University, 119899 Moscow, Russia

Available online 15 March 2006.

Abstract

The field dependence of ⁵⁹Co NMR in ferrimagnetic Er_1-xY_xCo₃ was measured up to 8 T at 4.2 K. For pure ErCo₃ in fields perpendicular to the c axis the resonance frequencies change discontinuously between 2 and 3 T due to a field induced metamagnetic transition. The transition is characterized by rotations of Er and Co magnetic moments away from the easy c-axis. The angles between the Co moments and the c axis at x=0.1 are obtained. The easy axis is found to be along the c axis for x=0 and 0.1, and inclined from the c axis for x=0.3 and 0.5.

Keywords: NMR; Ferrimagnet; Rare earth transition-metal compound; Metamagnetism; Itinerant electron metamagnetism

PACS classification codes: 71.10.Hf; 71.27.+a; 75.30.Mb

http://aleph.ub.tuwien.ac.at/F?base=tuw01&func=find-c&ccl_term=AC05938280

http://dx.doi.org/10.1016/j.physb.2006.01.432