Co K-Edge Magnetic Circular Dichroism Across the Spin State Transition in LaCoO3 Single Crystal Full article
Conference |
16th International Conference on X-ray Absorption Fine Structure 23-28 Aug 2015 , Karlsruhe |
||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Journal |
Journal of Physics: Conference Series
ISSN: 1742-6588 , E-ISSN: 1742-6596 |
||||||||||||||||||
Output data | Year: 2016, Volume: 712, Article number : 012111, Pages count : 4 DOI: 10.1088/1742-6596/712/1/012111 | ||||||||||||||||||
Tags | Atomic physics; Dichroism; Magnetic moments; Magnetism; Quantum interference devices; Single crystals; Spectroscopy; SQUIDs; Temperature distribution; X ray absorption | ||||||||||||||||||
Authors |
|
||||||||||||||||||
Affiliations |
|
Funding (2)
1 | Russian Foundation for Basic Research | 13-02-00699 |
2 | Russian Foundation for Basic Research | 15-32-50367 |
Abstract:
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.
Cite:
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
AN
OpenAlex
Co K-Edge Magnetic Circular Dichroism Across the Spin State Transition in LaCoO3 Single Crystal

Files:
Full text from publisher
Dates:
Published print: | May 1, 2016 |
Published online: | Jun 1, 2016 |
Identifiers:
Web of science: | WOS:000383249000112 |
Scopus: | 2-s2.0-84978743933 |
Elibrary: | 27075843 |
Chemical Abstracts: | 2017:633849 |
OpenAlex: | W2535448986 |