U.sub.2./sub.Ni.sub.2./sub.Sn and the origin of magnetic anisotropy in uranium compounds

0520927 - FZÚ 2020 RIV US eng J - Článek v odborném periodiku
Mašková, S. - Andreev, Alexander V. - Skourski, Y. - Yasin, S. - Gorbunov, D.I. - Zherlitsyn, S. - Nakotte, H. - Kothapalli, K. - Nasreen, F. - Cupp, C. - Cao, H.B. - Kolomiets, A. - Havela, L.
U₂Ni₂Sn and the origin of magnetic anisotropy in uranium compounds.
Physical Review B. Roč. 99, č. 6 (2019), s. 1-11, č. článku 064415. ISSN 2469-9950. E-ISSN 2469-9969
Grant CEP: GA ČR GA16-03593S
Institucionální podpora: RVO:68378271
Klíčová slova: U₂Ni₂Sn * antiferromagnetism * field-induced transitions * ultrasound
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Impakt faktor: 3.575, rok: 2019
Způsob publikování: Omezený přístup
https://doi.org/10.1103/physrevb.99.064415

U2Ni2Sn (tetragonal crystal structure) orders antiferromagnetically at 25 K with propagation vector q = (0, 0, 1/2). Magnetization, magnetoacoustic and neutron-diffraction experiments on a single crystal provide evidence that the uranium moments align parallel to the c axis with the anisotropy energy of 170 K. High-field magnetization studies exhibit a weak linear response for fields along the basal plane up to the highest field applied (60 T), while the c-axis magnetization curve exhibits three metamagnetic transitions at approximately 30, 39, and 50 T. The U magnetic moments of 0.87 mB, the low magnetic entropy, and the enhanced Sommerfeld coefficient gamma = 187 mJ/(mol K2) suggest that U2Ni2Sn can be classified as an itinerant antiferromagnet with strong electron-electron correlations.
Trvalý link: http://hdl.handle.net/11104/0305604