Kazan state Federal University E-Archive :: Browsing by Author "Aminov L."

1H NMR study of static and fluctuating internal Magnetic fields in Tb(C2H5SO4)3 · 9 H2O ising ferromagnet

Aminov L.; Volodin A.; Egorov A.; Naletov V.; Tagirov M.; Teplov M.; Feller G. (1990)

The pulsed NMR method is applied to an analysis of a complicated structure of inhomogeneous internal fields in a ferromagnetic crystal. Proton magnetic resonance in the Ising ferromagnet TbES at a temperature range from ...

Calculation of spin-lattice relaxation times

Aminov L.; Zaitov M. (1972)

A general expression is found for the probability for a direct (single-phonon) relaxation transition for arbitrary symmetry of the surroundings of a paramagnetic ion having an effective spin of S = 1/2. The expression is ...

Chapter 150 Magnetic properties of nonmetallic lanthanide compounds

Aminov L.; Malkin B.; Teplov M. (1996)

Concentration dependence of EPR spectra in mixed (BaF2)1 - x(CeF3)x crystals

Aminov L.; Kurkin I. (2013)

In the EPR spectra of the (BaF2)1 - x(CeF3)x system, additional lines appear as the concentration x in the mixture increases from 10-3 to 10-2, some of which correspond to tetragonal centers with g{norm of matrix} = 0. 725 ...

Crystal electric field excitations in the non-fermy liquid compound YbRh 2Si 2

Ivanshin V.; Kurkin I.; Leushin A.; Aminov L. (2007)

We have calculated the crystalline electric field (CEF) splitting of the energy levels of Yb 3+ (4f 13) in the clean Yb-based heavy fermion compound YbRh 2Si 2. The data of inelastic neutron scattering and electron spin ...

Debye temperature in YBa2Cu3Ox as measured from the electron spin-lattice relaxation of doped Yb3+ ions

Aminov L.; Ivanshin V.; Kurkin I.; Gafurov M.; Salikhov I.; Keller H.; Gutmann M. (2001)

The electron spin-lattice relaxation (SLR) times T1 of Yb3+ ions were measured from the temperature dependence of electron spin resonance line width in Y0.99Yb0.01Ba2Cu3Ox with different oxygen contents. Raman relaxation ...

Effect of Mo3+ ions on Nd3+ spin-lattice relaxation in Y3Al5O12

Aminov L.; Kurkin I.; Kurzin S.; Lukoyanov D. (1998)

The content of Mo3+ ions in YAG:Nd garnet samples prepared by different technologies has been studied, and the spin-lattice relaxation rate of these ions at temperatures of 4-5 K measured. It is concluded is drawn that ...

Electron paramagnetic resonance in mixed crystals (BaF2) 1-x(LaF3)x Activated by Ce3+ Ions

Aminov L.; Abdulsabirov R.; Korableva S.; Kurkin I.; Kurzin S.; Ziganshin A.; Gromov I. (2005)

The electron paramagnetic resonance (EPR) spectra of mixed crystals (BaF2)1 - x - y(LaF3)x(CeF 3)y (y = 0.001 = 0.1%, x = 0-0.02) are investigated in a magnetic field H ∥ C4 at a frequency of 9.5 GHz. The angular dependence ...

Electron paramagnetic resonance linewidth narrowing of Gd3+ ions in Y-doped ceria nanocrystals with decreasing crystallite size

Rakhmatullin R.; Aminov L.; Kurkin I.; Böttcher R.; Pöppl A.; Avila-Paredes H.; Kim S.; Sen S. (2009)

Electron paramagnetic resonance (EPR) spectra of Gd3+ ions in crystalline Ce1-x-y Gdx Yy O2- [0.5* (x+y)] (x=0.0025, y=0.10, and 0.25) with crystallite sizes ranging from 600 nm down to 5 nm have been measured at X -band ...

Electron paramagnetic resonance of Yb3+ ions in a concentrated YbRh2Si2 compound with heavy fermions

Ivan'shin V.; Aminov L.; Kurkin I.; Sichelschmidt J.; Stockert O.; Ferstl J.; Geibel C. (2003)

The EPR signal from localized ytterbium ions was observed in an undoped YbRh2Si2 compound with heavy fermions in the temperature range from 1.5 to 25 K. The exponential contribution dominating the temperature dependence ...

Enhanced superhyperfine structure of the EPR spectra of a U3+ ion introduced into the Van Vleck paramagnet LiTmF4

Aminov L.; Ershova A.; Korableva S.; Kurkin I.; Rodionov A.; Malkin B. (2008)

The observation of the superhyperfine structure (SHFS) in EPR spectra due to enhanced nuclear magnetism is reported. The X-band spectrum of a U 3+ ion introduced into the Van Vleck paramagnet LiTmF4 is measured in the ...

EPR Evidence of Unusual Dopant Valency States in Nanocrystalline Er-doped CeO<inf>2</inf>

Rakhmatullin R.; Aminov L.; Kurkin I.; Pöppl A. (2015)

© 2015, Springer-Verlag Wien. The structure and oxidation state of the Er dopant cation in CeO<inf>2</inf> single crystal and nanocrystals with size ranging from 22 to 300 nm are studied using electron paramagnetic resonance ...

EPR of Gd3+ ion in mixed CeO2-Y2O3 nanocrystals

Aminov L.; Kurkin I.; Rakhmatullin R.; Böttcher R.; Pöppl A.; Sen S. (2009)

This paper reports on the results of EPR studies of mixed CeO2-Y2O3 crystals (including nano-sized crystals) doped by gadolinium ions. It is revealed that the width of the line corresponding to the allowed transition 1/2 ...

EPR of Pb3+ ion in LiBaF3 crystals

Aminov L.; Zverev D.; Mamin G.; Nikitin S.; Silkin N.; Yusupov R.; Shakhov A. (2006)

Complex EPR spectra of paramagnetic centers Pb3+ formed in LiBaF3:Pb2+ crystals under X-ray irradiation are studied in the temperature range of 10-150 K. It is shown that lead ions substitute Ba2+ ions in the LiBaF3 crystal ...

EPR of rare-earth ion clusters in mixed crystals Ba1-xLa xF2+x doped with Yb3+ ion

Aminov L.; Abdulsabirov R.; Korableva S.; Kurkin I.; Kurzin S.; Ziganshin A.; Orlinskii S. (2005)

Electron paramagnetic resonance (EPR) spectra of Yb3+ ions in the mixed crystals (BaF2)1-xX (LaF3) x with x ≈ 0.01 have been investigated by the electron spin echo method at a frequency of 94.9 GHz and compared with the ...

EPR of single Yb<sup>3+</sup> ions in CsCdBr<inf>3</inf> monocrystals

Aminov L.; Gafurov M.; Kurkin I.; Nikitin S.; Rodionov A. (2019)

© Kazan Federal University (KFU). New measurements of EPR spectra in single crystals CsCdBr3:Yb3+ are presented. The lines due to pairs of Yb3+ ions and single Yb3+ ions are observed. The spectra indicate the existence of ...

EPR of Yb3+ ions in Ba1-xLaxF 2+x mixed crystals

Aminov L.; Abdulsabirov R.; Gafurov M.; Korableva S.; Kurkin I.; Kurzin S.; Rakhmatullin R.; Ziganshin A. (2005)

Electron paramagnetic resonance (EPR) spectra of impurity Yb3+ ions (about 0.1 at.%) in mixed crystals BaF2(1 - x) plus LaF 3(x;) have been investigated for different values of the concentration x at a frequency of about ...

EPR study of clusters of rare-earth ions in mixed fluoride crystals

Aminov L.; Gafurov M.; Kurkin I.; Rodionov A. (2014)

The EPR spectra of the (BaF2)1 - x (CeF3) x system are studied for the concentrations x = 0, 0.001, 0.002, 0.005, 0.01, and 0.02. The appearance of new tetragonal centers is detected beginning from x = 0.002, the intensity ...

EPR study of fluorite containing different concentration of ceria

Aminov L.; Kurkin I.; Lovchev A.; Rakhmatullin R.; Rodionov A.; Korableva S. (2020)

© 2019 Elsevier B.V. The variation of EPR spectra has been investigated in CaF2 single crystals doped with ceria depending on the content of CeO2 and methods of the crystal growth. The concentration of CeO2 changed from ...

Field dependence of spin-lattice relaxation of Nd3+ ions in y3Al5O12 crystals

Aminov L.; Kurkin N.; Kurzin S.; Lukoyanov D.; Salikhov I.; Rakhmatullin R. (1997)

Our studies involve measuring spin-lattice relaxation times for Nd3+ ions in yttrium-aluminum garnets over the temperature range 4-50 K at 9.25 and 36.4 GHz for different orientations of the external magnetic field in ...

Browsing by Author "Aminov L."

Browsing by Author "Aminov L."

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