Antiferromagnetism and phase transitions in noncentrosymmetric UIrSi3
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F18%3A10391724" target="_blank" >RIV/00216208:11320/18:10391724 - isvavai.cz</a>
Alternative codes found
RIV/68378271:_____/18:00491094
Result on the web
<a href="https://doi.org/10.1103/PhysRevB.97.144423" target="_blank" >https://doi.org/10.1103/PhysRevB.97.144423</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevB.97.144423" target="_blank" >10.1103/PhysRevB.97.144423</a>
Alternative languages
Result language
angličtina
Original language name
Antiferromagnetism and phase transitions in noncentrosymmetric UIrSi3
Original language description
Magnetization and specific-heat measurements on a UIrSi3 single crystal reveal Ising-like antiferromagnetism below T-N = 41.7 K with the easy magnetization direction along the c axis of the tetragonal structure. The antiferromagnetic ordering is suppressed by magnetic fields > H-c (mu H-0(c) = 7.3 T at 2 K) applied along the c axis. The first-order metamagnetic transition at H-c exhibits asymmetric hysteresis reflecting a slow reentry of the complex ground-state antiferromagnetic structure with decreasing field. The hysteresis narrows with increasing temperature and vanishes at 28 K. A second-order metamagnetic transition is observed at higher temperatures. The point of change of the order of transition in the established H-T magnetic phase diagram is considered as the tricritical point (at T-tc = 28 K and mu H-0(tc) = 5.8 T). The modified-Curie-Weiss law fits of temperature dependence of the a- and c-axis susceptibility provide opposite signs of Weiss temperatures, Theta(a)(p) similar to -51 K and Theta(c)(p) similar to + 38 K, respectively. This result and the small value of mu H-0(c) contrasting to the high T-N indicate competing ferromagnetic and antiferromagnetic interactions responsible for the complex antiferromagnetic ground state. The simultaneous electronic-structure calculations focused on the total energy of ferromagnetic and various antiferromagnetic states, the U magnetic moment, and magnetocrystalline anisotropy provide results consistent with experimental findings and the suggested physical picture of the system.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review B
ISSN
2469-9950
e-ISSN
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Volume of the periodical
97
Issue of the periodical within the volume
14
Country of publishing house
US - UNITED STATES
Number of pages
8
Pages from-to
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UT code for WoS article
000431975200006
EID of the result in the Scopus database
2-s2.0-85046834989