Hall effect of RCo.sub.2./sub. (R= Er and Lu) compounds

0573233 - FZÚ 2024 RIV NL eng J - Journal Article
Tanabe, K. - Hatoyama, S. - Wada, H. - Andreev, Alexander V. - Yamauchi, K. - Oguchi, T. - Harima, H.
Hall effect of RCo₂ (R= Er and Lu) compounds.
Journal of Alloys and Compounds. Roč. 960, Oct. (2023), č. článku 170743. ISSN 0925-8388. E-ISSN 1873-4669
R&D Projects: GA ČR(CZ) GA21-09766S
Institutional support: RVO:68378271
Keywords : itinerant electron metamagnetism * hall effect * energy band calculations * fermi surface
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 6.2, year: 2022
Method of publishing: Limited access
https://doi.org/10.1016/j.jallcom.2023.170743

The Hall effect of RCo2 with R = Er and Lu has been studied. LuCo2 is an exchange-enhanced Pauli paramagnet. ErCo2 is ferrimagnetic below TC = 32 K and undergoes a first-order magnetic transition at TC. The Hall resistivity ρxy was measured as a function of the magnetic field B at various temperatures. We estimated the normal (ordinary) Hall coefficient RN and the anomalous Hall coefficient RA from the analyses of the ρxy–B curves and the magnetization curves. The ρxy–B curve of ErCo2 depends on a magnetic state. In the ferrimagnetic state, both RN and RA have positive values, while RN is positive and RA is negative in the paramagnetic state. We calculated RN’s of nonmagnetic and ferromagnetic LuCo2 from the energy band structures and compared them with the experimental values.

Permanent Link: https://hdl.handle.net/11104/0343702