[Zurück]

M. Pieper, H. Niki, U. Seto, E. Gratz, K. Hense, N. Stuesser, V. Paul-Boncour, A. Markosyan, A. Hoser:
"Metamagnetic phase transitions in ErCo₃ investigated with microscopic methods";
Journal of Magnetism and Magnetic Materials, 272-276 (2004), S. e389 - e390.

Metamagnetic phase transitions in ErCo3 investigated with microscopic methods

M. W. PieperCorresponding Author Contact Information, E-mail The Corresponding Author, a, 1, H. Nikib, U. Setob, E. Gratza, K. Hensea, N. Stuesserc, V. Paul-Boncourd, A. S. Markosyane and A. Hoserf

a Inst. FK-Phys., TU-Wien, Wiedner Hauptstr. 8-10, Wien A-1040, Austria
b Faculty of Science, University of Ryukyus, Nishihara, Okinawa 903-0213, Japan
c Hahn-Meitner Institut, Glienicker Str. 100, Berlin D-14109, Germany
d LCMTR, CNRS, Thiais 94320, France
e Faculty of Physics, Lomonosov Moscow State University, Moscow 119899, Russia
f Inst. f. Kristallografie, RWTH, Jägerstr. 17/19, Aachen D-52056, Germany

Available online 17 January 2004.


Abstract

We studied 59Co nuclear magnetic resonance (NMR) in ErCo3 in magnetic fields up to B0=7 T and at temperatures from 4.2 to 130 K, including the metamagnetic transition at TM=100 K. The hyperfine field Bhf is negative only for the Co 18h-site, at 3b- and 6c-Co it is dominated by an unquenched angular momentum. The temperature dependence of the 18h-Co sublattice magnetization is smaller than deduced in a neutron study, with a first-order step at TM. A rapid decrease in NMR line intensity above ≈40 K may indicate a magnetic instability of 3b-Co.

Author Keywords: Metamagnetism; NMR

http://aleph.ub.tuwien.ac.at/F?base=tuw01&func=find-c&ccl_term=AC04970313

doi:10.1016/j.jmmm.2003.12.459