U2Ni2Sn and the origin of magnetic anisotropy in uranium compounds
Abstract
Here, U2Ni2Sn is a member of a large family of intermetallic compounds with the tetragonal Mo2FeB2 crystal structure. It orders antiferromagnetically at 25 K with propagation vector $$q = (0, 0, \frac{1}{2})$$. 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, indicating that U2Ni2Sn can be classified as an Ising system. The results are at variance with previous studies on polycrystals, which indicated different magnetic structure, and which were incompatible with the $5f - 5f$ two-ion anisotropy model dominant in most U band systems. 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 $$0.87 μ_B$$, the low magnetic entropy, and the enhanced Sommerfeld coefficient $$γ$$ = 187 mJ/mol f.u.K2 suggest that U2Ni2Sn can be classified as an itinerant antiferromagnet with strong electron-electron correlations.
- Authors:
-
- Charles Univ., Prague (Czech Republic). Dept. of Condensed Matter Physics
- Academy of Sciences, Prague (Czech Republic). Inst. of Physics
- Helmholtz-Zentrum Dresden-Rossendorf, Dresden (Germany). Hochfeld-Magnetlabor Dresden (HLD-EMFL)
- Helmholtz-Zentrum Dresden-Rossendorf, Dresden (Germany). Hochfeld-Magnetlabor Dresden (HLD-EMFL); American Univ. of the Middle East (Kuwait). College of Engineering and Technology
- New Mexico State Univ., Las Cruces, NM (United States). Dept. of Physics
- New Mexico State Univ., Las Cruces, NM (United States). Dept. of Physics; King Univ., Bristol, TN (United States). College of Arts and Sciences
- Univ. of Nevada, Las Vegas, NV (United States). High Pressure Science and Engineering Center (HiPSEC) and Dept. of Physics and Astronomy
- King Univ., Bristol, TN (United States). College of Arts and Sciences
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Neutron Scattering Division
- Charles Univ., Prague (Czech Republic). Dept. of Condensed Matter Physics; Lviv Poytechnic National Univ., Lviv (Ukraine). Dept. of Physics
- Publication Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1569369
- Grant/Contract Number:
- AC05-00OR22725
- Resource Type:
- Journal Article: Accepted Manuscript
- Journal Name:
- Physical Review B
- Additional Journal Information:
- Journal Volume: 99; Journal Issue: 6; Journal ID: ISSN 2469-9950
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Citation Formats
Mašková, S., Andreev, A. V., Skourski, Y., Yasin, S., Gorbunov, D. I., Zherlitsyn, S., Nakotte, H., Kothapalli, K., Nasreen, F., Cupp, C., Cao, H. B., Kolomiets, A., and Havela, L. U2Ni2Sn and the origin of magnetic anisotropy in uranium compounds. United States: N. p., 2019.
Web. doi:10.1103/PhysRevB.99.064415.
Mašková, S., Andreev, A. 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. United States. https://doi.org/10.1103/PhysRevB.99.064415
Mašková, S., Andreev, A. V., Skourski, Y., Yasin, S., Gorbunov, D. I., Zherlitsyn, S., Nakotte, H., Kothapalli, K., Nasreen, F., Cupp, C., Cao, H. B., Kolomiets, A., and Havela, L. 2019.
"U2Ni2Sn and the origin of magnetic anisotropy in uranium compounds". United States. https://doi.org/10.1103/PhysRevB.99.064415. https://www.osti.gov/servlets/purl/1569369.
@article{osti_1569369,
title = {U2Ni2Sn and the origin of magnetic anisotropy in uranium compounds},
author = {Mašková, S. and Andreev, A. V. and Skourski, Y. and Yasin, S. and Gorbunov, D. I. and Zherlitsyn, S. and Nakotte, H. and Kothapalli, K. and Nasreen, F. and Cupp, C. and Cao, H. B. and Kolomiets, A. and Havela, L.},
abstractNote = {Here, U2Ni2Sn is a member of a large family of intermetallic compounds with the tetragonal Mo2FeB2 crystal structure. It orders antiferromagnetically at 25 K with propagation vector $q = (0, 0, \frac{1}{2})$. 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, indicating that U2Ni2Sn can be classified as an Ising system. The results are at variance with previous studies on polycrystals, which indicated different magnetic structure, and which were incompatible with the $5f - 5f$ two-ion anisotropy model dominant in most U band systems. 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 $0.87 μ_B$, the low magnetic entropy, and the enhanced Sommerfeld coefficient $γ$ = 187 mJ/mol f.u.K2 suggest that U2Ni2Sn can be classified as an itinerant antiferromagnet with strong electron-electron correlations.},
doi = {10.1103/PhysRevB.99.064415},
url = {https://www.osti.gov/biblio/1569369},
journal = {Physical Review B},
issn = {2469-9950},
number = 6,
volume = 99,
place = {United States},
year = {Fri Feb 15 00:00:00 EST 2019},
month = {Fri Feb 15 00:00:00 EST 2019}
}
Web of Science
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