We investigate the magnetic fluctuation spectrum of the geometrically frustrated antiferromagnetic compound UNi4B, which partially orders below T-N = 20 K. An overdamped spin excitation is observed at the AF wave vector around 2.4 meV. Low-frequency, weakly Q-dependent inelastic scattering increases towards lower temperature, hinting at the approach of a newly discovered weak phase transition around 300 mK. (C) 1998 Elsevier Science B.V. All rights reserved.
|Journal||Physica B: Condensed Matter|
|Publication status||Published - 1997|
|Event||International Conference on Neutron Scattering - Toronto, Canada|
Duration: 17 Aug 1997 → 21 Aug 1997
|Conference||International Conference on Neutron Scattering|
|Period||17/08/1997 → 21/08/1997|
- spin excitation