Magnetic anisotropy in the van der Waals ferromagnet VI.sub.3./sub.

0552149 - FZÚ 2022 RIV US eng J - Článek v odborném periodiku
Koriki, A. - Míšek, Martin - Pospíšil, J. - Kratochvílová, M. - Carva, K. - Prokleška, J. - Doležal, P. - Kaštil, Jiří - Son, S. - Park, J.-G. - Sechovský, V.
Magnetic anisotropy in the van der Waals ferromagnet VI₃.
Physical Review B. Roč. 103, č. 17 (2021), č. článku 174401. ISSN 2469-9950. E-ISSN 2469-9969
Grant CEP: GA MŠMT(CZ) LM2018096
Institucionální podpora: RVO:68378271
Klíčová slova: magnetism * magnetic anisotropy * van der Waals systems * magnetization measuremen
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Impakt faktor: 3.908, rok: 2021
Způsob publikování: Omezený přístup
https://doi.org/10.1103/PhysRevB.103.174401

A comprehensive study of magnetocrystalline anisotropy of a layered van der Waals ferromagnet VI3 was performed. We measured angular dependences of the torque and magnetization with respect to the direction of the applied magnetic field within the basal ab plane and a general orthogonal plane to ab, respectively. A twofold butterflylike signal was detected by magnetization in the orthogonal plane. This signal symmetry remains conserved throughout all magnetic regimes as well as through the known structural transition down to the lowest temperatures. The maximum of the magnetization signal and the resulting magnetization easy axis is significantly tilted from the normal to the basal ab plane by ∼40°. The close relation of the magnetocrystalline anisotropy to the crystal structure was documented. In contrast, a two-fold-like angular signal was detected in the paramagnetic region within the ab plane in the monoclinic phase, which transforms into a six-fold-like signal below the Curie temperature TC. With further cooling, another six-fold-like signal with an angular shift of ∼30° grows approaching TFM. Below TFM, in the triclinic phase, the original six-fold-like signal vanishes, being replaced by a secondary six-fold-like signal with an angular shift of ∼30°.
Trvalý link: http://hdl.handle.net/11104/0327383