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| VOLUME 82 (2005) | ISSUE 1 | PAGE 36 |
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Magnetic phase transitions in TbNi5 single crystal: bulk properties and neutron diffraction studies
S. Lee+, A. A. Podlesnyak*, K. Prokes
 , V. E. Sikolenko, A. S. Ermolenko , E. G. Gerasimov, Yu. A. Dorofeev, A. P. Vokhmyanin, J.-G. Park+∇, A. N. Pirogov +Department of Physics and Institute of Basic Science, SungKyunKwan University, Suwon 440-746, South Korea *Laboratory for Neutron Scattering, ETH Zurich & Paul Scherrer Institute, Villigen 5232 PSI, Switzerland BENSC, Hahn-Meitner Institute, Berlin D-14109, GermanyInstitute of Metal Physics of RAS, 620219 Ekaterinburg, Russia∇Center for Strongly Correlated Materials Research, Seoul National University, Seoul 151-742, South Korea PACS: 75.25.+z, 75.30.Kz, 61.12.-q
Abstract
The magnetic susceptibility, heat capacity and neutron diffraction measurements have been carried out in order to study the unusual magnetic ordering of TbNi5 using a single crystal over the temperature region of 2  30 K. Two spontaneous magnetic
transitions have been observed: one is a second order transition
from a paramagnetic state to an incommensurate structure (Tp
=24 K) and the other a first order transition from the
incommensurate structure to a lock-in phase (Tcf = 10 K). We
also found an irreversible magnetic field-induced transition from
the modulated structure to the ferromagnetic collinear one.
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