Torque magnetometry studies of new low temperature metamagnetic states in ErNi_{2}B_{2}C

D. G. Naugle; B. I. Belevtsev; K. D. D. Rathnayaka; S. -I. Lee; S. M. Yeo

doi:10.1063/1.2829034

paper

Torque magnetometry studies of new low temperature metamagnetic states in ErNi_{2}B_{2}C

arXiv:0711.3614 · doi:10.1063/1.2829034

Abstract

The metamagnetic transitions in single-crystal ErNi $_{2}$ B $_{2}$ C have been studied at 1.9 K with a Quantum Design torque magnetometer. The critical fields of the transitions depend crucially on the angle between applied field and the easy axis [100]. Torque measurements have been made while changing angular direction of the magnetic field (parallel to basal tetragonal $ab$ -planes) in a wide angular range (more than two quadrants). Sequences of metamagnetic transitions with increasing field are found to be different for the magnetic field along (or close enough to) the easy [100] axis from that near the hard [110] axis. The study have revealed new metamagnetic states in ErNi $_{2}$ B $_{2}$ C which were not apparent in previous longitudinal-magnetization and neutron studies.

3 pages (4 figs. incl.) reported at 52th Magnetism and Magnetic Materials Conference, Tampa, Florida, USA, November 2007