Magnetoelastic standing waves induced in UO 2 by microsecond magnetic field pulses
Abstract
UO 2 is of particular interest due to its use as a nuclear fuel, its unusually poor thermal conductivity, and its uniquely strong magnetoelastic properties characterized by a linear coupling between strain and magnetization. We clearly observe mechanical standing waves and elastic resonances in a single crystal, induced by microsecond magnetic field pulses. The phase and amplitude of the mechanical resonances are modulated by the piezomagnetic switching behavior, offering a sensitive probe for otherwise hard to detect magnetic dynamics in UO 2 . We highlight the importance of magnetic domains in the attenuation of the mechanical resonances and the robustness of the antiferromagnetic state in UO 2 against externally applied magnetic fields to 150 T.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Dec 15, 2021
- Source ID
- 10.1073/pnas.2110555118
Entities
People
- Andreas V Stier
- Boris Maiorov
- Charles Paillard
- Dwight Rickel
- Fedor Balakirev
- George Rodriguez
- Jordan A. Evans
- Krzysztof Gofryk
- Laurent Bellaiche
- Marcelo Jaime
- Myron B. Salamon
- Rico Schoenemann
- Ross D. Mcdonald
Organizations
- Idaho National Laboratory
- Los Alamos National Laboratory
- National High Magnetic Field Laboratory
- National Science Foundation
- Paris-Saclay University
- Technical University of Munich
- University of Arkansas