Temperature Dependences of the Parameters of the Initial Splitting of Gd3+ in CaMoO4 ( Lattice and Spin-Phonon Contributions) / Gorlov A. D. // PHYSICS OF THE SOLID STATE. - 2017. - V. 59, l. 3. - P. 578-582.

ISSN/EISSN:

1063-7834 / 1090-6460

Type:

Article

Abstract:

The electron paramagnetic resonance (EPR) spectra of Gd3+ impurity centers in CaMoO4 single crystals have been investigated at temperatures T = 1.8, 4.2, and 99-300 K. The temperature dependences of the spin Hamiltonian parameters b(n)(m) (T) (n = 2, 4, m = 0, 4) have been determined, and their analysis has been carried out. The temperature contributions from the static lattice, b(2)(L) and b(4m)(L), to the spin Hamiltonian parameters b(n)(m) (T) have been separated. For this purpose, the changes of the static lattice contributions b(2)(L) and b(4m)(L) have been determined taking into account the temperature shifts of the oxygen ions nearest to the Gd3+ ions in CaMoO4 single crystals. The differences b(nm)(F) =b(n)(m) - b(nm)(L) have been attributed to the spinphonon contribution. The analysis of the results obtained has demonstrated that the parameters b(20)(F) and b(4m)(F) are positive, and the dependence of b(20)(F) on the temperature T is well described in the model of local vibrations (G. Pfister). However, the temperature behavior of the parameter b(4m)(F) could not be described in the framework of the well-known models of the spin-phonon interaction.

Author keywords:

S-STATE IONS; HAMILTONIAN PARAMETERS; CRYSTAL-FIELD; EPR

DOI:

10.1134/S1063783417030143

Web of Science ID:

ISI:000398097500024

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	MAR
Publisher	MAIK NAUKA/INTERPERIODICA/SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013-1578 USA
Language	English
EISSN	1090-6460
Keywords-Plus	S-STATE IONS; HAMILTONIAN PARAMETERS; CRYSTAL-FIELD; EPR
Research-Areas	Physics
Web-of-Science-Categories	Physics, Condensed Matter
Author-Email	Anatoliy.Gorlov@urfu.ru
Funding-Acknowledgement	Ministry of Education and Science of the Russian Federation {[}2457]
Funding-Text	This study was supported by the Ministry of Education and Science of the Russian Federation within the framework of the State Task Program (project code no. 2457) and performed on the equipment of the Joint Use Center ``Modern Nanotechnologies{''} of the Ural Federal University (Yekaterinburg, Russia).
Number-of-Cited-References	21
Usage-Count-Last-180-days	1
Usage-Count-Since-2013	1
Journal-ISO	Phys. Solid State
Doc-Delivery-Number	EQ5BY