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Browsing by Author "Klimashina E."

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A study of hydroxyapatite nanocrystals by the multifrequency EPR and ENDOR spectroscopy methods

Biktagirov T.; Gafurov M.; Mamin G.; Orlinskii S.; Yavkin B.; Rodionov A.; Klimashina E.; Putlyaev V.; Fillipov Y. (2014)

Specimens of powders of hydroxyapatite (Ca10(PO 4)6(OH)2) with average crystallite sizes in the range of 20-50 nm synthesized by the wet precipitation method have been investigated by the multifrequency (9 and 94 GHz) ...
Atherosclerotic plaque and hydroxyapatite nanostructures studied by high-frequency EPR

Gafurov M.; Yavkin B.; Biktagirov T.; Mamin G.; Orlinskii S.; Izotov V.; Salakhov M.; Klimashina E.; Putlayev V.; Abdul'yanov V.; Ignatjev I.; Khairullin R.; Zamochkin A.; Chelyshev Y. (2013)

A series of nanosized (20 nm and larger) samples of hydroxyapatite powders synthesized by wet preparation method and doped with Mn2+ and Pb2+ ions were studied by 94 GHz pulsed electron paramagnetic resonance (EPR). The ...
Combination of EPR measurements and DFT calculations to study nitrate impurities in the carbonated nanohydroxyapatite

Biktagirov T.; Gafurov M.; Mamin G.; Klimashina E.; Putlayev V.; Orlinskii S. (2014)

We demonstrate the application of the combined experimental-computational approach for studying the anionic impurities in hydroxyapatite (HAp). Influence of the carbonation level (x) on the concentration of the NO3 2- ...
Lattice distortions in hydroxyapatites with size as follows from the electronic relaxation time measurements

Shurtakova D.; Mamin G.; Gafurov M.; Kuznetsova L.; Putlayev V.; Klimashina E.; Orlinskii S. (2019)

© Published under licence by IOP Publishing Ltd. Pure and substituted hydroxyapatites (Ca10(PO4)6(OH)2, HAp) have been recently gaining special importance in catalysis for selective reactions where the synergetic functioning ...
Nitrogen-containing species in the structure of the synthesized nano-hydroxyapatite

Gafurov M.; Biktagirov T.; Yavkin B.; Mamin G.; Filippov Y.; Klimashina E.; Putlayev V.; Orlinskii S. (2014)

Synthesized by the wet chemical precipitation technique, hydroxyapatite (HAp) powders with the sizes of the crystallites of 20-50 nm and 1 μm were analyzed by different analytical methods. By means of electron paramagnetic ...
Pb 3+ radiation defects in Ca 9Pb(PO 4) 6(OH) 2 hydroxyapatite nanoparticles studied by high-field (W-band) EPR and ENDOR

Yavkin B.; Mamin G.; Orlinskii S.; Gafurov M.; Salakhov M.; Biktagirov T.; Klimashina E.; Putlayev V.; Tretyakov Y.; Silkin N. (2012)

W-band pulsed EPR and ENDOR investigations of X-ray irradiated nanoparticles of synthetic hydroxyapatite Ca 9Pb(PO 4) 6(OH) 2 are performed. It is shown that in the investigated species lead ions probably replace the Ca(1) ...
Study of the effects of hydroxyapatite nanocrystal codoping by pulsed electron paramagnetic resonance methods

Gafurov M.; Biktagirov T.; Mamin G.; Shurtakova D.; Klimashina E.; Putlyaev V.; Orlinskii S. (2016)

© Pleiades Publishing, Ltd., 2016.The effect of codoping of hydroxyapatite (HAP) nanocrystals with average sizes of 35 ± 15 nm during “wet” synthesis by CO2-3 carbonate anions and Mn2+ cations on relaxation characteristics ...
The Interplay of manganese and nitrate in hydroxyapatite nanoparticles as revealed by pulsed EPR and DFT

Gafurov M.; Biktagirov T.; Mamin G.; Klimashina E.; Putlayev V.; Kuznetsova L.; Orlinskii S. (2015)

© the Owner Societies 2015. The interplay of oppositely charged substitutions in the structure of hydroxyapatite (HAp) nanopowders is investigated on the atomic level by pulsed electron paramagnetic resonance (EPR) technique ...

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Browsing by Author "Klimashina E."

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