| Форма представления | Статьи в российских журналах и сборниках |
| Год публикации | 2020 |
| Язык | русский |
|
Тагиров Ленар Рафгатович, автор
Янилкин Игорь Витальевич, автор
|
| Библиографическое описание на языке оригинала |
A.A. Sukhanov, I.V. Yanilkin, V.F. Valeev, V.I. Nuzhdin, R.I. Khaibullin, L.R. Tagirov, V.K. Voronkova. Features of formation of Cr3+ paramagnetic centers in strontium titanate (SrTiO3) implanted with chromium ions // Journal of Surface Investigation. X-Ray, Synchrotron and Neutron Techniques. – 2020. – V.14,N3. – P.551–554. |
| Аннотация |
We present results of structural (XPS) and magnetic resonance (EPR) studies of single-crystal plates of
strontium titanate (SrTiO3) heavily doped with chromium utilizing ion implantation technique. It was shown that
the temperature of the oxide matrix during ion implantation (300 or 900 K) significantly affects the valence state
of the implanted chromium impurity (Cr0 or Cr3+) and the depth profiles of its distribution in the SrTiO3 matrix.
Using the EPR method, it was established that as a result of implantation of chromium impurity at an elevated substrate
temperature during irradiation, the dominating color centers in the surface implanted oxide layer appear in
the form of trivalent chromium ions in a cubic environment with a g factor g = 1.976 and the value of the hyperfine
coupling constant with the magnetic nucleus of 53Cr isotope, A = 16.2 × 10–4 cm–1. From a comparison of these
data with parameters for the cubic Cr3+ impurity center in the SrTiO3 single crystal, it was concluded that this center
is localized in the structural positions of titanium. Upon implantation of a chromium impurity in SrTiO3 at
room temperature of the substrate, in addition to cubic Cr3+ centers, new signals were detected in the EPR spectra,
apparently associated with the formation of oxygen vacancies in the implanted oxide. However, the number of
these additional centers does not change significantly even after high-temperature heat treatment of samples in air
at temperatures up to 900 K. It is noted that signals of this type also appear in the spectra of SrTiO3 samples
obtained as a result of hot implantation and then subjected to high-temperature thermal annealing. |
| Ключевые слова |
Strontium titanate, chromium ion, ion implantation, electron paramagnetic resonance, oxygen vacancies, XPS, thermal annealing |
| Название журнала |
Journal of Surface Investigation
|
| URL |
https://www.springer.com/journal/11700 |
| Пожалуйста, используйте этот идентификатор, чтобы цитировать или ссылаться на эту карточку |
https://repository.kpfu.ru/?p_id=235488 |
| Файлы ресурса | |
|
|
Полная запись метаданных  |
| Поле DC |
Значение |
Язык |
| dc.contributor.author |
Тагиров Ленар Рафгатович |
ru_RU |
| dc.contributor.author |
Янилкин Игорь Витальевич |
ru_RU |
| dc.date.accessioned |
2020-01-01T00:00:00Z |
ru_RU |
| dc.date.available |
2020-01-01T00:00:00Z |
ru_RU |
| dc.date.issued |
2020 |
ru_RU |
| dc.identifier.citation |
A.A. Sukhanov, I.V. Yanilkin, V.F. Valeev, V.I. Nuzhdin, R.I. Khaibullin, L.R. Tagirov, V.K. Voronkova. Features of formation of Cr3+ paramagnetic centers in strontium titanate (SrTiO3) implanted with chromium ions // Journal of Surface Investigation. X-Ray, Synchrotron and Neutron Techniques. – 2020. – V.14,N3. – P.551–554. |
ru_RU |
| dc.identifier.uri |
https://repository.kpfu.ru/?p_id=235488 |
ru_RU |
| dc.description.abstract |
Journal of Surface Investigation |
ru_RU |
| dc.description.abstract |
We present results of structural (XPS) and magnetic resonance (EPR) studies of single-crystal plates of
strontium titanate (SrTiO3) heavily doped with chromium utilizing ion implantation technique. It was shown that
the temperature of the oxide matrix during ion implantation (300 or 900 K) significantly affects the valence state
of the implanted chromium impurity (Cr0 or Cr3+) and the depth profiles of its distribution in the SrTiO3 matrix.
Using the EPR method, it was established that as a result of implantation of chromium impurity at an elevated substrate
temperature during irradiation, the dominating color centers in the surface implanted oxide layer appear in
the form of trivalent chromium ions in a cubic environment with a g factor g = 1.976 and the value of the hyperfine
coupling constant with the magnetic nucleus of 53Cr isotope, A = 16.2 × 10–4 cm–1. From a comparison of these
data with parameters for the cubic Cr3+ impurity center in the SrTiO3 single crystal, it was concluded that this center
is localized in the structural positions of titanium. Upon implantation of a chromium impurity in SrTiO3 at
room temperature of the substrate, in addition to cubic Cr3+ centers, new signals were detected in the EPR spectra,
apparently associated with the formation of oxygen vacancies in the implanted oxide. However, the number of
these additional centers does not change significantly even after high-temperature heat treatment of samples in air
at temperatures up to 900 K. It is noted that signals of this type also appear in the spectra of SrTiO3 samples
obtained as a result of hot implantation and then subjected to high-temperature thermal annealing. |
ru_RU |
| dc.language.iso |
ru |
ru_RU |
| dc.subject |
Strontium titanate |
ru_RU |
| dc.subject |
chromium ion |
ru_RU |
| dc.subject |
ion implantation |
ru_RU |
| dc.subject |
electron paramagnetic resonance |
ru_RU |
| dc.subject |
oxygen vacancies |
ru_RU |
| dc.subject |
XPS |
ru_RU |
| dc.subject |
thermal annealing |
ru_RU |
| dc.title |
Features of formation of Cr3+ paramagnetic centers in strontium titanate (SrTiO3) implanted with chromium ions |
ru_RU |
| dc.type |
Статьи в российских журналах и сборниках |
ru_RU |
|
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