Pristas, G.; Backai, J.; Orendac, M.; Gabani, S.; Gazo, E.; Shitsevalova, N.; Dukhnenko, A.; Siemensmeyer, K.; Flachbart, K.: Magnetic Phase Diagram of Geometrically Frustrated Magnetic System ErB4 under High Pressure. In: Takashi Hotta and Takuro Katsufuji [Ed.] : Proceedings of the International Conference on Strongly Correlated Electron Systems (SCES2019) : September 23-28, 2019, Okayama, Japan JPS, 2020 (JPS Conference Proceedings ; 30). - ISBN 978-4-89027-142-9, p. 011093/1-6
http://tienda.scoutsecuador.org/proceedings_of_international_conference_on_global.pdf
10.7566/JPSCP.30.0110935
Open Accesn Version
Abstract:
Rare-earth tetraborides (REB4) crystallize in tetragonal crystal structure, where the sublattice of rare-earth ions forms in ab-plane a geometrically frustrated Shastry-Sutherland lattice. In this work we constructed a detailed TN vs. B phase diagram of ErB4 from data of temperature/field dependencies of resistance. We have applied hydrostatic pressure up to 2.88 GPa using a piston cylinder pressure cell and performed sensitive ac-resistance measurements in temperature range 1.8 K - 300 K and in magnetic fields up to 6 T. The obtained results exhibit shifts of ordering temperature TN to higher values as well as shifts of boundaries between different magnetic phases. The effect of pressure on the interaction between magnetic ions in this compound is discussed and compared with the previous results obtained on TmB4.