Spin fluctuations in hydrogen-stabilized Laves phase UTi2H5

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F19%3A10398895" target="_blank" >RIV/00216208:11320/19:10398895 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=csRfvK7fxv" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=csRfvK7fxv</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1080/14786435.2019.1605222" target="_blank" >10.1080/14786435.2019.1605222</a>

Result language
angličtina
Original language name
Spin fluctuations in hydrogen-stabilized Laves phase UTi2H5
Original language description
Uranium Laves phase UTi2 does not exist in a pure form, but can be stabilised by the presence of hydrogen, which can be absorbed in concentration exceeding 5 H atoms/f.u. Low temperature specific heat, magnetic susceptibility, and resistivity indicate that UTi2H5 is a spin fluctuator close to the verge of magnetic ordering. Its susceptibility follows at high temperatures the Curie-Weiss law with U effective moment mu(eff[) = 3.1 mu(B)/U and paramagnetic Curie temperature Theta(p) = -200 K. The temperature dependence of specific heat exhibits a pronounced and weakly field dependent upturn in C-p/T versus T below 10 K reflecting the effect of spin fluctuations. It can be described by an additional T-1/2 term. The Sommerfeld coefficient gamma = 256 mJ/mol K-2 classifies the compound as a mid-weight heavy fermion. Spin fluctuations are affecting also electrical and thermal transport and thermoelectric power, which all resemble UAl2. A lattice anomaly at approximate to 240 K, attributed to the melting of hydrogen sublattice, reflects in most of bulk properties.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)

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)

Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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