[Zurück]

H. Niki, T. Kinjou, M. Yogi, M. Pieper, E. Gratz, A. Markosyan:
"NMR studies on magnetic properties of intermetallic compounds Er_1-xY_xCo₃";
Journal of Magnetism and Magnetic Materials, 310 (2007), S. e577 - e579.

NMR studies on magnetic properties of intermetallic compounds Er_1-xY_xCo₃

H. Niki a, T. Kinjo a, M. Yogi a, M.W. Pieper b, E. Gratz b and A.S. Markosyan c
a Department of Physics, 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 Faculty of Physics, M.V. Lomonosov Moscow State University, 119899 Moscow, Russia

Abstract

Field dependence of ⁵⁹Co NMR in ferrimagnetic Er_1-xY_xCo₃ was measured up to 8 T at 4.2 K using aligned powdered samples. 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 easy axis is found to be along the c axis for x=0 and 0.1. An average angle for the Co moments of 45±5° from the c axis is obtained from field dependence of ⁵⁹Co NMR at x=0.3. Directions of Co moments are also found to be inclined from the c axis for x=0.5.

NMR; Ferrimagnet; Rare earth-cobalt compounds; Ferromagnetism

http://dx.doi.org/10.1016/j.jmmm.2006.10.541

http://dx.doi.org/10.1016/j.jmmm.2006.10.541