Magnetic anisotropy in CsGd(MoO 4 ) 2 probed by EPR spectroscopy.

Authors :: Kamenskyi D
Tkáč V
Čižmár E
Khrustalyov V
Kutko K
Source :: Journal of physics. Condensed matter : an Institute of Physics journal [J Phys Condens Matter] 2020 Jun 19; Vol. 32 (38). Date of Electronic Publication: 2020 Jun 19.
Publication Year :: 2020
Abstract: Here we report electron paramagnetic resonance (EPR) study of rare-earth paramagnet CsGd(MoO <subscript>4</subscript> ) <subscript>2</subscript> . Multifrequency EPR measurements allowed us to directly probe the splitting of the lowest <superscript>8</superscript> S <subscript>7/2</subscript> multiplet of Gd <superscript>3+</superscript> ion and revealed the rhombic type of single-ion anisotropy. An easy-axis anisotropy approximation with a rhombic distortion of the Gd <superscript>3+</superscript> local environment describes obtained EPR spectra and yield energies of <superscript>8</superscript> S <subscript>7/2</subscript> splitting. Within this model, we discuss the configuration of the lowest Gd <superscript>3+</superscript> multiplet, its zero-field splitting, and the anisotropy of magnetic properties in CsGd(MoO <subscript>4</subscript> ) <subscript>2</subscript> . We argue that the zero-field splitting of <superscript>8</superscript> S <subscript>7/2</subscript> induces a multiple structure of EPR spectra in CsGd(MoO <subscript>4</subscript> ) <subscript>2</subscript> .<br /> (© 2020 IOP Publishing Ltd.)

Language :: English
ISSN :: 1361-648X
Volume :: 32
Issue :: 38
Database :: MEDLINE
Journal :: Journal of physics. Condensed matter : an Institute of Physics journal
Publication Type :: Academic Journal
Accession number :: 32422625
Full Text :: https://doi.org/10.1088/1361-648X/ab940b