Back to Search
Start Over
Crystal Structures and Phase Transitions of the van-der-Waals Ferromagnet VI3
- Source :
- Phys. Rev. Materials 3, 121401 (2019)
- Publication Year :
- 2019
-
Abstract
- The results of a single-crystal X-ray-diffraction study of the evolution of crystal structures of VI3 with temperature with emphasis on phase transitions are presented. Some related specific-heat and magnetization data are included. The existence of the room-temperature trigonal crystal structure R-3 (148) has been confirmed. Upon cooling, VI3 undergoes a structural phase transition to a monoclinic phase at Ts ~ 79 K. Ts is reduced in magnetic fields applied along the trigonal c-axis. When VI3 becomes ferromagnetic at TFM1 ~ 50 K, magnetostriction-induced changes of the monoclinic-structure parameters are observed. Upon further cooling, the monoclinic structure transforms into a triclinic variant at 32 K which is most likely occurring in conjunction with the previously reported transformation of the ferromagnetic structure. The observed phenomena are preliminarily attributed to strong magnetoelastic interactions.
- Subjects :
- Condensed Matter - Strongly Correlated Electrons
Subjects
Details
- Database :
- arXiv
- Journal :
- Phys. Rev. Materials 3, 121401 (2019)
- Publication Type :
- Report
- Accession number :
- edsarx.1909.04459
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevMaterials.3.121401