Electron spin-lattice relaxation of low-symmetry Ni2+ centers in LiF

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F14%3A00432326" target="_blank" >RIV/68378271:_____/14:00432326 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1063/1.4885381" target="_blank" >http://dx.doi.org/10.1063/1.4885381</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1063/1.4885381" target="_blank" >10.1063/1.4885381</a>

Result language
angličtina
Original language name
Electron spin-lattice relaxation of low-symmetry Ni2+ centers in LiF
Original language description
The spin-lattice relaxation times of charge-compensated Ni2+ centers in LiF single crystals were measured using the electron spin echo technique. An analysis of the results revealed a very high relaxation rate with a linear dependence on temperature within the intermediate temperature range of 5?15 K. This acceleration of the relaxation rate was found to be due to the inhomogeneous distribution of Ni2+ ions in the LiF lattice. It seems that the effective cross-relaxation mechanism through the exchange-coupled clusters of Ni2+ ions can play a dominant role. Two-phonon Raman type relaxation dominates at higher temperatures involving the Debye phonon spectrum of the LiF lattice.
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
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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
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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