Co K-Edge Magnetic Circular Dichroism Across the Spin State Transition in LaCoO3 Single Crystal | Sciact - CRIS-система Института катализа

Co K-Edge Magnetic Circular Dichroism Across the Spin State Transition in LaCoO3 Single Crystal Научная публикация

Конференция

16th International Conference on X-ray Absorption Fine Structure
23-28 авг. 2015 , Karlsruhe

Журнал

Journal of Physics: Conference Series
ISSN: 1742-6588 , E-ISSN: 1742-6596

Вых. Данные

Год: 2016, Том: 712, Номер статьи : 012111, Страниц : 4 DOI: 10.1088/1742-6596/712/1/012111

Ключевые слова

Atomic physics; Dichroism; Magnetic moments; Magnetism; Quantum interference devices; Single crystals; Spectroscopy; SQUIDs; Temperature distribution; X ray absorption

Авторы

Efimov V. ¹ , Ignatov A. ² , Troyanchuk I.O. ³ , Sikolenko V.V. ^1,4 , Rogalev A. ⁵ , Wilhelm F. ⁵ , Efimova E. ¹ , Tiutiunnikov S.I. ¹ , Karpinsky D. ³ , Kriventsov V. ⁶ , Yakimchuk E. ⁶ , Molodtsov S. ⁷ , Sainctavit P. ⁸ , Prabhakaran D. ⁹

Организации

1	Joint Institute for Nuclear Research, 141980 Dubna, Russia
2	Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
3	Scientific-Practical Material Research Center NAS Belarus, 220072 Minsk, Belarus
4	REC "Functional nanomaterials" Immanuel Kant Baltic Federal University, 236041 Kaliningrad, Russia
5	European Synchrotron Radiation Facility, BP 220, 38043 Grenoble, France
6	Boreskov Institute of Catalysis SB RAS, 630090 Novosibirsk, Russia
7	European XFEL Gmbh, Albert-Einstein-Ring 19, 22761 Hamburg, Germany
8	Institut de minéralogie et de physique des milieux condensés CNRS F-75012, France
9	Department of Physics, University of Oxford, OX1 3PU, Oxford, Great Britain

Информация о финансировании (2)

1	Российский фонд фундаментальных исследований	13-02-00699
2	Российский фонд фундаментальных исследований	15-32-50367

We report on Co K-edge x-ray magnetic circular dichroism (XMCD) measurements of LaCoO3 single crystal in temperature range from 5 to 300 K and external magnetic field of 17 T. The response consists of pre-edge (at 7712 eV) and bi-polar peak (up at 7727, down at 7731 eV) with amplitudes, respectively, less than 10-3 and 10-2 of the Co K-edge jump. Using the sum rule the orbital magnetic moment of 4p Co is evaluated. Its temperature dependence reaches a maximum of (2.7 ± 0.9) x 10-3 µB at 120 K, following the trend for the total magnetic moment on the Co obtained from the superconducting quantum interference device measurements. However, on warming from 25 to 120 K, the orbital magnetic moment of the 4p Co doubles while total magnetic moment of Co increases 10 times. First principle calculations are in order to relate the Co K-edge XMCD results to the orbital and spin moment of 3d Co.

Efimov V. , Ignatov A. , Troyanchuk I.O. , Sikolenko V.V. , Rogalev A. , Wilhelm F. , Efimova E. , Tiutiunnikov S.I. , Karpinsky D. , Kriventsov V. , Yakimchuk E. , Molodtsov S. , Sainctavit P. , Prabhakaran D.
Co K-Edge Magnetic Circular Dichroism Across the Spin State Transition in LaCoO3 Single Crystal

Journal of Physics: Conference Series. 2016. V.712. 012111 :1-4. DOI: 10.1088/1742-6596/712/1/012111 WOS Scopus РИНЦ CAPlus OpenAlex

Полный текст от издателя

Опубликована в печати:	1 мая 2016 г.
Опубликована online:	1 июн. 2016 г.

Web of science:	WOS:000383249000112
Scopus:	2-s2.0-84978743933
РИНЦ:	27075843
Chemical Abstracts:	2017:633849
OpenAlex:	W2535448986

БД	Цитирований
Web of science	1
Scopus	2
РИНЦ	1
OpenAlex	1