Pressure-induced Nonmagnetic-Magnetic Transition in SmS Observed by 33S-NMR
Abstract
Intermediate valence compound SmS, which undergoes a nonmagnetic-magnetic transition at Pc ∼ 2 GPa, has been studied by nuclear magnetic resonance (NMR) measurements at 3.2 GPa. The use of 33S-enriched sample enabled the application of NMR technique to the study of this compound, and the measurement at the pressure well above Pc was achieved using a modified opposed-anvil high pressure cell. A temperature-dependent 33S-NMR signal arising from the paramagnetic phase shifts to an almost temperature-independent signal below about 20 K. The appearance of the low-temperature signal is in good agreement with the pressure-induced nonmagnetic-magnetic transition reported previously, indicating the new signal originates from the magnetically ordered (MO) phase. Hyperfine field at the S site is reduced in the MO phase, suggesting that the ordered structure in the MO phase is antiferromagnetic.
- Publication:
-
Proceedings of J-Physics 2019: International Conference on Multipole Physics and Related Phenomena
- Pub Date:
- 2020
- DOI:
- 10.7566/JPSCP.29.012008
- Bibcode:
- 2020mprp.confa2008Y